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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] Eliding mechanism in 6550
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Subject: Re: [Roll] Eliding mechanism in 6550
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From: Rahul Jadhav <nyrahul@outlook.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] Eliding mechanism in 6550
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Date: Mon, 7 Oct 2019 06:19:22 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/1mv8ugXq83Ud3S7kvuiCS2kwRJc>
Subject: Re: [Roll] Eliding mechanism in 6550
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] Eliding mechanism in 6550
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Subject: Re: [Roll] Eliding mechanism in 6550
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From: Rahul Jadhav <nyrahul@outlook.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>, Ines Robles <mariainesrobles=40googlemail.com@dmarc.ietf.org>
Thread-Topic: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual Meeting: 2019-10-14
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Subject: [Roll] Fw: Routing Over Low power and Lossy networks (roll) WG Virtual Meeting: 2019-10-14
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Hello all,

The proposed slides for 14th interim are present in the PR https://github.c=
om/roll-wg/ROLL-Interim-Meeting/pull/2
Please let me know if anything is missed.
Ines, please check and accept the PR.

Thanks,
Rahul


________________________________________
From: Roll <roll-bounces@ietf.org> on behalf of IESG Secretary <iesg-secret=
ary@ietf.org>
Sent: Monday, September 30, 2019 1:25 PM
To: IETF-Announce
Cc: roll@ietf.org
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14

The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.

Agenda:
Draft Agenda:

- Configuration Option structure
- Capabilities unaware 6LR
- Bidirectional Capabilities representation

Information about remote participation:
Topic: Continue with the work on Capabilities and MOPex
Hosted by ROLL WG
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US & Canada)
Meeting number: 319 527 168
Password: pxT5tCu6
https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168

https://github.com/roll-wg/ROLL-Interim-Meeting

_______________________________________________
Roll mailing list
Roll@ietf.org
https://www.ietf.org/mailman/listinfo/roll

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Hello all,&nbsp;</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
The proposed slides for 14th interim are present in the PR&nbsp;<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"LPNoLP370292"=
>https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2</a></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Please let me know if anything is missed.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Ines, please check and accept the PR.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Thanks,</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Rahul</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div id=3D"appendonsend"></div>
<font size=3D"2"><span style=3D"font-size:11pt;">
<div class=3D"PlainText"><br>
________________________________________<br>
From: Roll &lt;roll-bounces@ietf.org&gt; on behalf of IESG Secretary &lt;ie=
sg-secretary@ietf.org&gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: roll@ietf.org<br>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
- Bidirectional Capabilities representation<br>
<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc8=
646e17153ec</a><br>
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168<br>
<br>
<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting">https://github.=
com/roll-wg/ROLL-Interim-Meeting</a><br>
<br>
_______________________________________________<br>
Roll mailing list<br>
Roll@ietf.org<br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll">https://www.ietf.org=
/mailman/listinfo/roll</a><br>
</div>
</span></font>
</body>
</html>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Thu, 10 Oct 2019 12:56:36 +0300
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/2F7jfIYAReUR5SyavjcDmH0__rc>
Subject: Re: [Roll] Last call to draft-ietf-roll-efficient-npdao-16
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Dear all,

We did not get any negative feedback on the proposed modifications, then we
will move forward with
https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-16

Thank you,

Ines and Peter

On Tue, Sep 10, 2019 at 7:08 PM Michael Richardson <mcr+ietf@sandelman.ca>
wrote:

>
> Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
>     > To generate rfcdiff https://tools.ietf.org/rfcdiff please use:
>     > draft-ietf-roll-efficient-npdao vs.
>     >
> https://raw.githubusercontent.com/pthubert/efficient-route-invalidation/master/draft-ietf-roll-efficient-npdao.txt
>
> I read the changes, and I agree.
>
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>  -= IPv6 IoT consulting =-
>
>
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr">Dear all,<div><br></div><div>We did not get any negative f=
eedback on the proposed modifications, then we will move forward with=C2=A0=
<a href=3D"https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-16">=
https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-16</a></div><di=
v><br></div><div>Thank you,</div><div><br></div><div>Ines and Peter</div></=
div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On=
 Tue, Sep 10, 2019 at 7:08 PM Michael Richardson &lt;<a href=3D"mailto:mcr%=
2Bietf@sandelman.ca">mcr+ietf@sandelman.ca</a>&gt; wrote:<br></div><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
 solid rgb(204,204,204);padding-left:1ex"><br>
Pascal Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.com" target=
=3D"_blank">pthubert@cisco.com</a>&gt; wrote:<br>
=C2=A0 =C2=A0 &gt; To generate rfcdiff <a href=3D"https://tools.ietf.org/rf=
cdiff" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/rfcdiff<=
/a> please use:<br>
=C2=A0 =C2=A0 &gt; draft-ietf-roll-efficient-npdao vs.<br>
=C2=A0 =C2=A0 &gt; <a href=3D"https://raw.githubusercontent.com/pthubert/ef=
ficient-route-invalidation/master/draft-ietf-roll-efficient-npdao.txt" rel=
=3D"noreferrer" target=3D"_blank">https://raw.githubusercontent.com/pthuber=
t/efficient-route-invalidation/master/draft-ietf-roll-efficient-npdao.txt</=
a><br>
<br>
I read the changes, and I agree.<br>
<br>
-- <br>
Michael Richardson &lt;<a href=3D"mailto:mcr%2BIETF@sandelman.ca" target=3D=
"_blank">mcr+IETF@sandelman.ca</a>&gt;, Sandelman Software Works<br>
=C2=A0-=3D IPv6 IoT consulting =3D-<br>
<br>
<br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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At the virtual interim a few weeks ago, Pascal and I discussed different
possible goals for the documents.  Some of the confusion comes down to
mis-understandings resulting from the choices of names.

Let me go through a series of descriptions and connect some terms as I can =
to
them.

1) Host. It was Carsten who first pointed that things that do not route are
   hosts, and RFC8504 says what a host is supposed to do.
   RFC8504 does not say anything about being able to decapsulate IP(dst:me)=
IP(dst:me)
   packets.  I tried to get that in, but 6man was rather hostile to this.
   RFC8504 also says nothing about supporting 6lowpan stuff!

2) 6lowpan host.
   Everything from (1), plus ability to do
      rfc4944: Transmission of IPv6 Packets over IEEE 802.15.4 Networks

   which means doing some amount of header compression.

   Does it include any of:

   rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Power Wireless
            Personal Area Networks (6LoWPANs)=20
   rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over Low-Power
            Wireless Personal Area Networks
   rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
            Paging Dispatch
   rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) ESC
            Dispatch Code Points and Guidelines
   rfc8505: Registration Extensions for IPv6 over Low-Power Wireless Person=
al
            Area Network (6LoWPAN) Neighbor Discovery
   rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
            Routing Header=20

   I have no idea.  If someone says a product does "rfc6775", then 4944 is
   clearly included.   Some of the more recent radios (DECT) may have nailed
   down that they need additional things, but I didn't check.

3) RPL host.
   Pascal and I disagree whether to call this an RPL *AWARE* host (because =
it
   speaks RPL data plane), or an RPL *UNAWARE* host (because it does not
   speak 6550).  It being a host, it is by definition a leaf.

   We are we want is a definition which includes:
   A) All the stuff above which we were uncertain about.  Specifically, we
      really want RFC8505 and RFC6775 to be supported.
      Specifically, EARO with the TID.
=20=20=20=20=20=20
   B) We want these devices to ignore RPI and RH3 headers according rfc8200,
      as useofrplinfo envisions.
=20=20=20=20=20=20
   C) We want these devices to accept IP(dst:me),headers,IP(dst:me) constru=
cts,
      as it simplies the useofrplinfo situation for storing mode.  But,
      we have some ways to work around this in the 6LR in storing mode, but
      it is a spec change.

   D) Ideally, these hosts would send IPv6 packets with an RPI header alrea=
dy
      inserted.  This eliminates the need to do an IPIP encapsulation at the
      first 6LR.

   A typical example of such a device is a window smash sensor that might be
   part of a (home) security system.  When installed, it might be provision=
ed
   with some cable for power and control.  Then, having sent out an EARO/TID
   to register with the 6LR/6LBR, it goes into a deep sleep, waking up
   perhaps weekly or monthly.  If the window is smashed, it send packets,
   probably until the battery runs dry.  If it is re-used, it is effectively
   refurbished with a new battery and rejoins as if it was a new device.
=20=20=20
   There are other examples of sleepy devices which would never be able to
   forward packets.

4) 6LR with incompatible MOP, or other handicap.

   Such a device is forced by the rules of 6550 to join the network as a le=
af.
   It is unclear to me if it is allowed to send DAOs for itself, or if it h=
as
   to use ND like (3) above.  Clearly it listens to DIOs, because that's how
   it learnt that it couldn't join as a router.  The key thing is that it
   does not emit DIOs, and thus never attracts any children.

   {It is distinguished from a 6LR which just happens to be leaf, because
   there are no children that have picked it as a parent.  Such a 6LR sends
   out peridic DIOs according trickle}

=3D=3D=3D=3D=3D

I would have called (2), RPL Unaware Leaves, and I would have called (3) RPL
Aware Leaves.
Pascal calls (1) RPL Unaware Leaves, and (2) are RPL Aware Leaves (I think).
Well, maybe my description is wrong!

Flame away!

=2D-=20
]               Never tell me the odds!                 | ipv6 mesh network=
s [=20
]   Michael Richardson, Sandelman Software Works        | network architect=
  [=20
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails  =
  [=20
=09


=20=20=20


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Subject: Re: [Roll] naming and other goals for RPL Unaware Leaves
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Thanks Micheal,
I prefer that we stick to IPv6 host definitions (rfc4861 and all its
updates), so it can be aware and unaware of such addition protocol as you
mentioned. More comments below,

On Fri, Oct 11, 2019 at 4:56 PM Michael Richardson <mcr+ietf@sandelman.ca>
wrote:

>
> At the virtual interim a few weeks ago, Pascal and I discussed different
> possible goals for the documents.  Some of the confusion comes down to
> mis-understandings resulting from the choices of names.
>
> Let me go through a series of descriptions and connect some terms as I can
> to
> them.
>
> 1) Host. It was Carsten who first pointed that things that do not route are
>    hosts, and RFC8504 says what a host is supposed to do.
>    RFC8504 does not say anything about being able to decapsulate
> IP(dst:me)IP(dst:me)
>    packets.  I tried to get that in, but 6man was rather hostile to this.
>    RFC8504 also says nothing about supporting 6lowpan stuff!
>

I think that is ok no problem or confusion as long we follow IPv6 host
definitions [RFC4861 and its updates].

>
> 2) 6lowpan host.
>    Everything from (1), plus ability to do
>       rfc4944: Transmission of IPv6 Packets over IEEE 802.15.4 Networks
>
>    which means doing some amount of header compression.
>

that is an addition protocol that is in the use case of such subnet
IEEE802.15.4 which LLN may have other subnets with other protocols.

>
>    Does it include any of:
>
>    rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Power
> Wireless
>             Personal Area Networks (6LoWPANs)
>    rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over Low-Power
>             Wireless Personal Area Networks
>    rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
>             Paging Dispatch
>    rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
> ESC
>             Dispatch Code Points and Guidelines
>    rfc8505: Registration Extensions for IPv6 over Low-Power Wireless
> Personal
>             Area Network (6LoWPAN) Neighbor Discovery
>    rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
>             Routing Header
>
>    I have no idea.  If someone says a product does "rfc6775", then 4944 is
>    clearly included.   Some of the more recent radios (DECT) may have
> nailed
>    down that they need additional things, but I didn't check.
>

I think those standards are special for WPAN in general but mostly direct
in the eyes of  IEEE802.15.4, however we need to make WPAN general the
local area network of LLN and not the IEEE802 subnet.

>
> 3) RPL host.
>    Pascal and I disagree whether to call this an RPL *AWARE* host (because
> it
>    speaks RPL data plane), or an RPL *UNAWARE* host (because it does not
>    speak 6550).  It being a host, it is by definition a leaf.
>
It is an IPv6 host and then a RPL leaf, so YES, it is better to say/call-it
* RPL leaf * because not all IPv6 hosts are RPL leaf, so using to call it
RPL leaf is perfect and short. using aware and unaware is not needed
because it is better to call unaware RPL host by IPv6 host.

>
>    We are we want is a definition which includes:
>    A) All the stuff above which we were uncertain about.  Specifically, we
>       really want RFC8505 and RFC6775 to be supported.
>       Specifically, EARO with the TID.
>
>    B) We want these devices to ignore RPI and RH3 headers according
> rfc8200,
>       as useofrplinfo envisions.
>
>    C) We want these devices to accept IP(dst:me),headers,IP(dst:me)
> constructs,
>       as it simplies the useofrplinfo situation for storing mode.  But,
>       we have some ways to work around this in the 6LR in storing mode, but
>       it is a spec change.
>
>    D) Ideally, these hosts would send IPv6 packets with an RPI header
> already
>       inserted.  This eliminates the need to do an IPIP encapsulation at
> the
>       first 6LR.
>

I this the RPL leaf can be called by such mode of operation or some kind of
classification,


>
>    A typical example of such a device is a window smash sensor that might
> be
>    part of a (home) security system.  When installed, it might be
> provisioned
>    with some cable for power and control.  Then, having sent out an
> EARO/TID
>    to register with the 6LR/6LBR, it goes into a deep sleep, waking up
>    perhaps weekly or monthly.  If the window is smashed, it send packets,
>    probably until the battery runs dry.  If it is re-used, it is
> effectively
>    refurbished with a new battery and rejoins as if it was a new device.
>
>    There are other examples of sleepy devices which would never be able to
>    forward packets.
>
> 4) 6LR with incompatible MOP, or other handicap.
>
>    Such a device is forced by the rules of 6550 to join the network as a
> leaf.
>    It is unclear to me if it is allowed to send DAOs for itself, or if it
> has
>    to use ND like (3) above.  Clearly it listens to DIOs, because that's
> how
>    it learnt that it couldn't join as a router.  The key thing is that it
>    does not emit DIOs, and thus never attracts any children.
>

I was voting in the past to re-write RFC6550, but the WG directed to
continue with, I still think to obsolete it with another new draft to
solve/clarify  such issues.

AB

--000000000000fcac0a0594a492bd
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Thanks Micheal,</div><div dir=3D"ltr">I p=
refer that we stick to IPv6 host definitions (rfc4861 and all its updates),=
 so it can be aware and unaware of such addition protocol as you mentioned.=
 More comments below,<br></div><br><div class=3D"gmail_quote"><div class=3D=
"gmail_attr" dir=3D"ltr">On Fri, Oct 11, 2019 at 4:56 PM Michael Richardson=
 &lt;<a href=3D"mailto:mcr%2Bietf@sandelman.ca">mcr+ietf@sandelman.ca</a>&g=
t; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0p=
x 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left=
-width:1px;border-left-style:solid"><br>
At the virtual interim a few weeks ago, Pascal and I discussed different<br=
>
possible goals for the documents.=C2=A0 Some of the confusion comes down to=
<br>
mis-understandings resulting from the choices of names.<br>
<br>
Let me go through a series of descriptions and connect some terms as I can =
to<br>
them.<br>
<br>
1) Host. It was Carsten who first pointed that things that do not route are=
<br>
=C2=A0 =C2=A0hosts, and RFC8504 says what a host is supposed to do.<br>
=C2=A0 =C2=A0RFC8504 does not say anything about being able to decapsulate =
IP(dst:me)IP(dst:me)<br>
=C2=A0 =C2=A0packets.=C2=A0 I tried to get that in, but 6man was rather hos=
tile to this.<br>
=C2=A0 =C2=A0RFC8504 also says nothing about supporting 6lowpan stuff!<br><=
/blockquote><div>=C2=A0</div><div>I think that is ok no problem or confusio=
n as long we follow IPv6 host definitions [RFC4861 and its updates].=C2=A0<=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;pa=
dding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;bor=
der-left-style:solid">
<br>
2) 6lowpan host.<br>
=C2=A0 =C2=A0Everything from (1), plus ability to do<br>
=C2=A0 =C2=A0 =C2=A0 rfc4944: Transmission of IPv6 Packets over IEEE 802.15=
.4 Networks<br>
<br>
=C2=A0 =C2=A0which means doing some amount of header compression.<br></bloc=
kquote><div>=C2=A0</div><div>that is an addition protocol that is in the us=
e case of such subnet IEEE802.15.4 which LLN may have other subnets with ot=
her protocols.=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);bord=
er-left-width:1px;border-left-style:solid">
<br>
=C2=A0 =C2=A0Does it include any of:<br>
<br>
=C2=A0 =C2=A0rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Pow=
er Wireless<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Personal Area Networks (6LoWPANs)=
 <br>
=C2=A0 =C2=A0rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over=
 Low-Power<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Wireless Personal Area Networks<b=
r>
=C2=A0 =C2=A0rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Paging Dispatch<br>
=C2=A0 =C2=A0rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN) ESC<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Dispatch Code Points and Guidelin=
es<br>
=C2=A0 =C2=A0rfc8505: Registration Extensions for IPv6 over Low-Power Wirel=
ess Personal<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Area Network (6LoWPAN) Neighbor D=
iscovery<br>
=C2=A0 =C2=A0rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Routing Header <br>
<br>
=C2=A0 =C2=A0I have no idea.=C2=A0 If someone says a product does &quot;rfc=
6775&quot;, then 4944 is<br>
=C2=A0 =C2=A0clearly included.=C2=A0 =C2=A0Some of the more recent radios (=
DECT) may have nailed<br>
=C2=A0 =C2=A0down that they need additional things, but I didn&#39;t check.=
<br></blockquote><div><br></div><div>I think those standards are special fo=
r WPAN in=C2=A0general=C2=A0but mostly=C2=A0direct in the=C2=A0eyes of =C2=
=A0IEEE802.15.4, however we need to make WPAN general the local area networ=
k of LLN and not the IEEE802 subnet.</div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(2=
04,204,204);border-left-width:1px;border-left-style:solid">
<br>
3) RPL host.<br>
=C2=A0 =C2=A0Pascal and I disagree whether to call this an RPL *AWARE* host=
 (because it<br>
=C2=A0 =C2=A0speaks RPL data plane), or an RPL *UNAWARE* host (because it d=
oes not<br>
=C2=A0 =C2=A0speak 6550).=C2=A0 It being a host, it is by definition a leaf=
.<br></blockquote><div>It is an IPv6 host and then a RPL leaf, so YES,=C2=
=A0it is=C2=A0better to say/call-it *=C2=A0RPL leaf * because not all IPv6 =
hosts are RPL leaf, so using to call it RPL leaf is perfect and short. usin=
g aware and unaware is not needed because it is better to call unaware RPL =
host by IPv6 host.</div><blockquote class=3D"gmail_quote" style=3D"margin:0=
px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border=
-left-width:1px;border-left-style:solid">
<br>
=C2=A0 =C2=A0We are we want is a definition which includes:<br>
=C2=A0 =C2=A0A) All the stuff above which we were uncertain about.=C2=A0 Sp=
ecifically, we<br>
=C2=A0 =C2=A0 =C2=A0 really want RFC8505 and RFC6775 to be supported.<br>
=C2=A0 =C2=A0 =C2=A0 Specifically, EARO with the TID.<br>
<br>
=C2=A0 =C2=A0B) We want these devices to ignore RPI and RH3 headers accordi=
ng rfc8200,<br>
=C2=A0 =C2=A0 =C2=A0 as useofrplinfo envisions.<br>
<br>
=C2=A0 =C2=A0C) We want these devices to accept IP(dst:me),headers,IP(dst:m=
e) constructs,<br>
=C2=A0 =C2=A0 =C2=A0 as it simplies the useofrplinfo situation for storing =
mode.=C2=A0 But,<br>
=C2=A0 =C2=A0 =C2=A0 we have some ways to work around this in the 6LR in st=
oring mode, but<br>
=C2=A0 =C2=A0 =C2=A0 it is a spec change.<br>
<br>
=C2=A0 =C2=A0D) Ideally, these hosts would send IPv6 packets with an RPI he=
ader already<br>
=C2=A0 =C2=A0 =C2=A0 inserted.=C2=A0 This eliminates the need to do an IPIP=
 encapsulation at the<br>
=C2=A0 =C2=A0 =C2=A0 first 6LR.<br></blockquote><div><br></div><div>I this =
the RPL leaf can be called by such mode of operation or some kind of classi=
fication,</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204=
);border-left-width:1px;border-left-style:solid">
<br>
=C2=A0 =C2=A0A typical example of such a device is a window smash sensor th=
at might be<br>
=C2=A0 =C2=A0part of a (home) security system.=C2=A0 When installed, it mig=
ht be provisioned<br>
=C2=A0 =C2=A0with some cable for power and control.=C2=A0 Then, having sent=
 out an EARO/TID<br>
=C2=A0 =C2=A0to register with the 6LR/6LBR, it goes into a deep sleep, waki=
ng up<br>
=C2=A0 =C2=A0perhaps weekly or monthly.=C2=A0 If the window is smashed, it =
send packets,<br>
=C2=A0 =C2=A0probably until the battery runs dry.=C2=A0 If it is re-used, i=
t is effectively<br>
=C2=A0 =C2=A0refurbished with a new battery and rejoins as if it was a new =
device.<br>
<br>
=C2=A0 =C2=A0There are other examples of sleepy devices which would never b=
e able to<br>
=C2=A0 =C2=A0forward packets.<br>
<br>
4) 6LR with incompatible MOP, or other handicap.<br>
<br>
=C2=A0 =C2=A0Such a device is forced by the rules of 6550 to join the netwo=
rk as a leaf.<br>
=C2=A0 =C2=A0It is unclear to me if it is allowed to send DAOs for itself, =
or if it has<br>
=C2=A0 =C2=A0to use ND like (3) above.=C2=A0 Clearly it listens to DIOs, be=
cause that&#39;s how<br>
=C2=A0 =C2=A0it learnt that it couldn&#39;t join as a router.=C2=A0 The key=
 thing is that it<br>
=C2=A0 =C2=A0does not emit DIOs, and thus never attracts any children.<br><=
/blockquote><div><br></div><div>I was voting in the past to re-write RFC655=
0, but=C2=A0the WG directed to continue with, I still think to obsolete it =
with another new draft to solve/clarify =C2=A0such issues.</div><div><br></=
div><div>AB<br></div>
</div></div>

--000000000000fcac0a0594a492bd--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] naming and other goals for RPL Unaware Leaves
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Subject: Re: [Roll] naming and other goals for RPL Unaware Leaves
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Many thanks for the great description Michael!

The art of RFC 6550:
1) a leaf is a node that connects to the RPL network as a host and obtained=
 reachability from the RPL domain=20
2) all leaves need to be RPL aware. This involves sending DAOs thus speakin=
g RFC 6550.

I wrote the first rounds of the RUL draft with the expectation that:
- we define a new type of leaf that does 1) but not 2) . I called that guys=
 a RUL. Note well: the definition a pure ROLL definition; it is not related=
 to 6LoWPAN nor even IPv6, though currently RPL only applies to AF v6 and m=
ostly in conjunction with 6LoWPAN.
- the RUL draft applies to a specific family of RULs that supports RFC 8505=
 and plays it by the rules of the RUL draft
- the RUL draft also lists dependencies on the RUL, e.g., support RFC 8200 =
for handling RH and HbH as a host (https://tools.ietf.org/html/draft-ietf-r=
oll-unaware-leaves-04#section-6).=20
- when the RUL draft is RFC-blah, the set of properties above is wrapped in=
to a "RUL that supports RFC-blah", not sure we need a name for it, but we c=
ould. That would be a definition that goes beyond ROLL. =20

If we want to change the above then the draft will need a rewrite according=
ly because this definition is used pervasively.

In contrast I called a leaf-that-is-not-a-RUL a RAL. =3D> A leaf is either =
a RUL or a RAL nut not both. IOW  {RUL} v {RAL} =3D {leaves} and {RUL} ^ {R=
AL} =3D 0. So the term leaf was extended and the leaves that RFC 6550 prese=
nted can still be named as RAL. Combining with a RPL router we obtain the R=
AN, RPL aware node.

The use of RPL info could use a name for "RUL that supports RFC-blah", beca=
use it calls it a RUL right now. The problem is that this creates a normati=
ve reference to the RUL draft and may delay useofrplinfo. OTOH, delaying ma=
y be a good idea to ensure final consistency.

What do others think?

Pascal


-----Original Message-----
From: Roll <roll-bounces@ietf.org> On Behalf Of Michael Richardson
Sent: vendredi 11 octobre 2019 16:57
To: roll@ietf.org
Subject: [Roll] naming and other goals for RPL Unaware Leaves


At the virtual interim a few weeks ago, Pascal and I discussed different po=
ssible goals for the documents.  Some of the confusion comes down to mis-un=
derstandings resulting from the choices of names.

Let me go through a series of descriptions and connect some terms as I can =
to them.

1) Host. It was Carsten who first pointed that things that do not route are
   hosts, and RFC8504 says what a host is supposed to do.
   RFC8504 does not say anything about being able to decapsulate IP(dst:me)=
IP(dst:me)
   packets.  I tried to get that in, but 6man was rather hostile to this.
   RFC8504 also says nothing about supporting 6lowpan stuff!

2) 6lowpan host.
   Everything from (1), plus ability to do
      rfc4944: Transmission of IPv6 Packets over IEEE 802.15.4 Networks

   which means doing some amount of header compression.

   Does it include any of:

   rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Power Wireles=
s
            Personal Area Networks (6LoWPANs)=20
   rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over Low-Power
            Wireless Personal Area Networks
   rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
            Paging Dispatch
   rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) ES=
C
            Dispatch Code Points and Guidelines
   rfc8505: Registration Extensions for IPv6 over Low-Power Wireless Person=
al
            Area Network (6LoWPAN) Neighbor Discovery
   rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
            Routing Header=20

   I have no idea.  If someone says a product does "rfc6775", then 4944 is
   clearly included.   Some of the more recent radios (DECT) may have naile=
d
   down that they need additional things, but I didn't check.

3) RPL host.
   Pascal and I disagree whether to call this an RPL *AWARE* host (because =
it
   speaks RPL data plane), or an RPL *UNAWARE* host (because it does not
   speak 6550).  It being a host, it is by definition a leaf.

   We are we want is a definition which includes:
   A) All the stuff above which we were uncertain about.  Specifically, we
      really want RFC8505 and RFC6775 to be supported.
      Specifically, EARO with the TID.
     =20
   B) We want these devices to ignore RPI and RH3 headers according rfc8200=
,
      as useofrplinfo envisions.
     =20
   C) We want these devices to accept IP(dst:me),headers,IP(dst:me) constru=
cts,
      as it simplies the useofrplinfo situation for storing mode.  But,
      we have some ways to work around this in the 6LR in storing mode, but
      it is a spec change.

   D) Ideally, these hosts would send IPv6 packets with an RPI header alrea=
dy
      inserted.  This eliminates the need to do an IPIP encapsulation at th=
e
      first 6LR.

   A typical example of such a device is a window smash sensor that might b=
e
   part of a (home) security system.  When installed, it might be provision=
ed
   with some cable for power and control.  Then, having sent out an EARO/TI=
D
   to register with the 6LR/6LBR, it goes into a deep sleep, waking up
   perhaps weekly or monthly.  If the window is smashed, it send packets,
   probably until the battery runs dry.  If it is re-used, it is effectivel=
y
   refurbished with a new battery and rejoins as if it was a new device.
  =20
   There are other examples of sleepy devices which would never be able to
   forward packets.

4) 6LR with incompatible MOP, or other handicap.

   Such a device is forced by the rules of 6550 to join the network as a le=
af.
   It is unclear to me if it is allowed to send DAOs for itself, or if it h=
as
   to use ND like (3) above.  Clearly it listens to DIOs, because that's ho=
w
   it learnt that it couldn't join as a router.  The key thing is that it
   does not emit DIOs, and thus never attracts any children.

   {It is distinguished from a 6LR which just happens to be leaf, because
   there are no children that have picked it as a parent.  Such a 6LR sends
   out peridic DIOs according trickle}

=3D=3D=3D=3D=3D

I would have called (2), RPL Unaware Leaves, and I would have called (3) RP=
L Aware Leaves.
Pascal calls (1) RPL Unaware Leaves, and (2) are RPL Aware Leaves (I think)=
.
Well, maybe my description is wrong!

Flame away!

--=20
]               Never tell me the odds!                 | ipv6 mesh network=
s [=20
]   Michael Richardson, Sandelman Software Works        | network architect=
  [=20
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails  =
  [=20
=09


  =20


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Comments: In-reply-to "Pascal Thubert (pthubert)" <pthubert@cisco.com> message dated "Fri, 11 Oct 2019 17:13:03 -0000."
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/xD0dm9a0JuVaSVquyFi4RRK0Pno>
Subject: Re: [Roll] naming and other goals for RPL Unaware Leaves
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Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
    > The art of RFC 6550: 1) a leaf is a node that connects to the RPL
    > network as a host and obtained reachability from the RPL domain 2) all
    > leaves need to be RPL aware. This involves sending DAOs thus speaking
    > RFC 6550.

Agreed, but can you relate it to the categories I wrote about?

    > I wrote the first rounds of the RUL draft with the expectation that: -
    > we define a new type of leaf that does 1) but not 2) .

So, this is my category:

    mcr> 3) RPL host.  Pascal and I disagree whether to call this an RPL *A=
WARE*
    mcr> host (because it speaks RPL data plane), or an RPL *UNAWARE* host
    mcr> (because it does not speak 6550).  It being a host, it is by defin=
ition
    mcr> a leaf.

Do others agree?
I don't care what we call it.

But, useofrplinfo used the term RUL to refer to category (2), not (3).
If all leaves are (3) then from an RPL point of view, they require no speci=
al care.

If useofrplinfo can assume (3), which is a new thing, then can useofrplinfo=
 define (2),
explain that are difficult to deal with, and remove support for them?
If we go this way, then useofrplinfo winds up with a reference to
unaware-leaves and has to wait for it to progress.

Maybe we could change the word unaware to non-participating.
Or maybe anti-social.=20=20=20

    > In contrast I called a leaf-that-is-not-a-RUL a RAL. =3D> A leaf is
    > either a RUL or a RAL nut not both. IOW {RUL} v {RAL} =3D {leaves} and
    > {RUL} ^ {RAL} =3D 0. So the term leaf was extended and the leaves that
    > RFC 6550 presented can still be named as RAL. Combining with a RPL
    > router we obtain the RAN, RPL aware node.

A RAL speaks RPL, but is just at the edge.  Is it my category (4), or is
it=20

    >    {It is distinguished from a 6LR which just happens to be leaf,
    > because there are no children that have picked it as a parent.  Such a
    > 6LR sends out peridic DIOs according trickle}

=2D-=20
]               Never tell me the odds!                 | ipv6 mesh network=
s [=20
]   Michael Richardson, Sandelman Software Works        | network architect=
  [=20
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails  =
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=09

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Mon, 14 Oct 2019 11:48:45 +0300
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Subject: [Roll] REMINDER - WG Virtual Meeting: 2019-10-14
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Dear all,

This a reminder of the interim meeting today.

Thank you very much Rahul for the great slides set!! :-)

Meeting Details:

------------------------------------------------------------------------------------------------------------------------

Webex Details:

Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
Time (US & Canada)
Meeting number: 319 527 168
Password: pxT5tCu6
https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec


Join by phone
1-650-479-3208 Call-in toll number (US/Canada)
Access code: 319 527 168

--------------------------------------------------------------------------------------------------------------------

Etherpad: https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014

------------------------------------------------------------------------------------------------------------------

Agenda:

0) Agenda Bashing
1) Note Well https://www.ietf.org/about/note-well/
2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension
and Capabilities

- Configuration Option Structure
- Cap unaware 6LR
- Capabilities Option structure and semantics

4) AOB

Thanks,

Ines and Peter.



On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav <nyrahul@outlook.com> wrote:

> Hello all,
>
> The proposed slides for 14th interim are present in the PR
> https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2
> Please let me know if anything is missed.
> Ines, please check and accept the PR.
>
> Thanks,
> Rahul
>
>
> ________________________________________
> From: Roll <roll-bounces@ietf.org> on behalf of IESG Secretary <
> iesg-secretary@ietf.org>
> Sent: Monday, September 30, 2019 1:25 PM
> To: IETF-Announce
> Cc: roll@ietf.org
> Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG
> Virtual Meeting: 2019-10-14
>
> The Routing Over Low power and Lossy networks (roll) Working Group will
> hold
> a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.
>
> Agenda:
> Draft Agenda:
>
> - Configuration Option structure
> - Capabilities unaware 6LR
> - Bidirectional Capabilities representation
>
> Information about remote participation:
> Topic: Continue with the work on Capabilities and MOPex
> Hosted by ROLL WG
> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
> Time (US & Canada)
> Meeting number: 319 527 168
> Password: pxT5tCu6
> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
> Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code:
> 319 527 168
>
> https://github.com/roll-wg/ROLL-Interim-Meeting
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr"><div>Dear all,=C2=A0</div><div><br></div><div>This a remin=
der of the interim meeting today.</div><div><br></div><div>Thank you very m=
uch Rahul for the great slides set!! :-)</div><div><br></div><div>Meeting D=
etails:</div><div><br></div><div>------------------------------------------=
---------------------------------------------------------------------------=
---<br><br>Webex Details:<br><br>Monday, Oct 14, 2019 8:45 am | 2 hours 15 =
minutes | (UTC-05:00) Eastern Time (US &amp; Canada)<br>Meeting number: 319=
 527 168<br>Password: pxT5tCu6<br><a href=3D"https://ietf.webex.com/ietf/j.=
php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec">https://ietf.webex.com/ietf/j=
.php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec</a><br><br><br>Join by phone<=
br>1-650-479-3208 Call-in toll number (US/Canada)<br>Access code: 319 527 1=
68<br><br>-----------------------------------------------------------------=
---------------------------------------------------<br><br>Etherpad: <a hre=
f=3D"https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014">htt=
ps://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014</a><br><br>-=
---------------------------------------------------------------------------=
--------------------------------------<br><br>Agenda:<br><br>0) Agenda Bash=
ing<br>1) Note Well <a href=3D"https://www.ietf.org/about/note-well/">https=
://www.ietf.org/about/note-well/</a><br>2) Discuss about: draft-ietf-roll-m=
opex-cap-00 Mode of Operation extension and Capabilities<br><br>- Configura=
tion Option Structure<br>- Cap unaware 6LR<br>- Capabilities Option structu=
re and semantics<br><br>4) AOB<br></div><div><br></div><div>Thanks,</div><d=
iv><br></div><div>Ines and Peter.</div><div><br></div><div><br></div><br><d=
iv class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct =
9, 2019 at 3:29 PM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com">=
nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204)=
;padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Hello all,=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The proposed slides for 14th interim are present in the PR=C2=A0<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"gmail-m_-7299=
942161684321182LPNoLP370292" target=3D"_blank">https://github.com/roll-wg/R=
OLL-Interim-Meeting/pull/2</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Please let me know if anything is missed.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Ines, please check and accept the PR.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div id=3D"gmail-m_-7299942161684321182appendonsend"></div>
<font size=3D"2"><span style=3D"font-size:11pt">
<div><br>
________________________________________<br>
From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">r=
oll-bounces@ietf.org</a>&gt; on behalf of IESG Secretary &lt;<a href=3D"mai=
lto:iesg-secretary@ietf.org" target=3D"_blank">iesg-secretary@ietf.org</a>&=
gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</a><br=
>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
- Bidirectional Capabilities representation<br>
<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168<br>
<br>
<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting" target=3D"_blan=
k">https://github.com/roll-wg/ROLL-Interim-Meeting</a><br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/roll</a><br>
</div>
</span></font>
</div>

</blockquote></div></div>

--00000000000025b4c10594daf05f--


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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Mon, 14 Oct 2019 12:00:52 +0300
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll] REMINDER - WG Virtual Meeting: 2019-10-14
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Dear all,

The material for the meeting can be found in:

https://github.com/roll-wg/ROLL-Interim-Meeting
<https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master/20191014>

Regards

Ines

On Mon, Oct 14, 2019 at 11:48 AM Ines Robles <mariainesrobles@googlemail.com>
wrote:

> Dear all,
>
> This a reminder of the interim meeting today.
>
> Thank you very much Rahul for the great slides set!! :-)
>
> Meeting Details:
>
>
> ------------------------------------------------------------------------------------------------------------------------
>
> Webex Details:
>
> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
> Time (US & Canada)
> Meeting number: 319 527 168
> Password: pxT5tCu6
> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
>
>
> Join by phone
> 1-650-479-3208 Call-in toll number (US/Canada)
> Access code: 319 527 168
>
>
> --------------------------------------------------------------------------------------------------------------------
>
> Etherpad:
> https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014
>
>
> ------------------------------------------------------------------------------------------------------------------
>
> Agenda:
>
> 0) Agenda Bashing
> 1) Note Well https://www.ietf.org/about/note-well/
> 2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension
> and Capabilities
>
> - Configuration Option Structure
> - Cap unaware 6LR
> - Capabilities Option structure and semantics
>
> 4) AOB
>
> Thanks,
>
> Ines and Peter.
>
>
>
> On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav <nyrahul@outlook.com> wrote:
>
>> Hello all,
>>
>> The proposed slides for 14th interim are present in the PR
>> https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2
>> Please let me know if anything is missed.
>> Ines, please check and accept the PR.
>>
>> Thanks,
>> Rahul
>>
>>
>> ________________________________________
>> From: Roll <roll-bounces@ietf.org> on behalf of IESG Secretary <
>> iesg-secretary@ietf.org>
>> Sent: Monday, September 30, 2019 1:25 PM
>> To: IETF-Announce
>> Cc: roll@ietf.org
>> Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG
>> Virtual Meeting: 2019-10-14
>>
>> The Routing Over Low power and Lossy networks (roll) Working Group will
>> hold
>> a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.
>>
>> Agenda:
>> Draft Agenda:
>>
>> - Configuration Option structure
>> - Capabilities unaware 6LR
>> - Bidirectional Capabilities representation
>>
>> Information about remote participation:
>> Topic: Continue with the work on Capabilities and MOPex
>> Hosted by ROLL WG
>> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
>> Time (US & Canada)
>> Meeting number: 319 527 168
>> Password: pxT5tCu6
>> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
>> Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code:
>> 319 527 168
>>
>> https://github.com/roll-wg/ROLL-Interim-Meeting
>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
>

--0000000000007d15d50594db1bf5
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear all,<div><br></div><div>The material for the meeting =
can be found in:<div><br></div><div><a href=3D"https://github.com/roll-wg/R=
OLL-Interim-Meeting/tree/master/20191014" style=3D"margin:0px;padding:0px;w=
hite-space:pre-wrap;font-family:Arial,sans-serif;font-size:12px">https://gi=
thub.com/roll-wg/ROLL-Interim-Meeting</a><br></div><div><br></div><div>Rega=
rds</div><div><br></div><div>Ines</div></div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Oct 14, 2019 at 11:48 =
AM Ines  Robles &lt;<a href=3D"mailto:mariainesrobles@googlemail.com">maria=
inesrobles@googlemail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20=
4,204);padding-left:1ex"><div dir=3D"ltr"><div>Dear all,=C2=A0</div><div><b=
r></div><div>This a reminder of the interim meeting today.</div><div><br></=
div><div>Thank you very much Rahul for the great slides set!! :-)</div><div=
><br></div><div>Meeting Details:</div><div><br></div><div>-----------------=
---------------------------------------------------------------------------=
----------------------------<br><br>Webex Details:<br><br>Monday, Oct 14, 2=
019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Time (US &amp; Canad=
a)<br>Meeting number: 319 527 168<br>Password: pxT5tCu6<br><a href=3D"https=
://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec" targ=
et=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79ecc=
c8646e17153ec</a><br><br><br>Join by phone<br>1-650-479-3208 Call-in toll n=
umber (US/Canada)<br>Access code: 319 527 168<br><br>----------------------=
---------------------------------------------------------------------------=
-------------------<br><br>Etherpad: <a href=3D"https://etherpad.ietf.org/p=
/roll-interim-virtual-meeting-20191014" target=3D"_blank">https://etherpad.=
ietf.org/p/roll-interim-virtual-meeting-20191014</a><br><br>---------------=
---------------------------------------------------------------------------=
------------------------<br><br>Agenda:<br><br>0) Agenda Bashing<br>1) Note=
 Well <a href=3D"https://www.ietf.org/about/note-well/" target=3D"_blank">h=
ttps://www.ietf.org/about/note-well/</a><br>2) Discuss about: draft-ietf-ro=
ll-mopex-cap-00 Mode of Operation extension and Capabilities<br><br>- Confi=
guration Option Structure<br>- Cap unaware 6LR<br>- Capabilities Option str=
ucture and semantics<br><br>4) AOB<br></div><div><br></div><div>Thanks,</di=
v><div><br></div><div>Ines and Peter.</div><div><br></div><div><br></div><b=
r><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, =
Oct 9, 2019 at 3:29 PM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.c=
om" target=3D"_blank">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Hello all,=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The proposed slides for 14th interim are present in the PR=C2=A0<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"gmail-m_51153=
74259946801496gmail-m_-7299942161684321182LPNoLP370292" target=3D"_blank">h=
ttps://github.com/roll-wg/ROLL-Interim-Meeting/pull/2</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Please let me know if anything is missed.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Ines, please check and accept the PR.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div id=3D"gmail-m_5115374259946801496gmail-m_-7299942161684321182appendons=
end"></div>
<font size=3D"2"><span style=3D"font-size:11pt">
<div><br>
________________________________________<br>
From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">r=
oll-bounces@ietf.org</a>&gt; on behalf of IESG Secretary &lt;<a href=3D"mai=
lto:iesg-secretary@ietf.org" target=3D"_blank">iesg-secretary@ietf.org</a>&=
gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</a><br=
>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
- Bidirectional Capabilities representation<br>
<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168<br>
<br>
<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting" target=3D"_blan=
k">https://github.com/roll-wg/ROLL-Interim-Meeting</a><br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/roll</a><br>
</div>
</span></font>
</div>

</blockquote></div></div>
</blockquote></div>

--0000000000007d15d50594db1bf5--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: Following up on seq Counter to protect the config option and others
Thread-Index: AdWCrxPZcTH2VHjHRxWHUI79NH4rSg==
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Subject: [Roll] Following up on seq Counter to protect the config option and others
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Dear all :

At the interim today we refined the idea of a Sequence counter in a DIO tha=
t increments when there is a change in a global option.
For the lack of an acronym that results in SEAL, I'm using the RPL Configur=
ation State Sequence (RCSS) for now.
This concerns options that are fully set by the root and propagated unchang=
ed. Seems that this means at this time:

   1.  The Route Information Option (RIO)
   2.  The Prefix Information Option (PIO)
   3.  The DODAG Configuration Option (DCO)
   4.  The Extended MOP Option (MOPex)
   5.  The Global Capabilities Option (GCO)

Note that this also means that the capabilities have to be split between th=
e parent capabilities (not protected) and the network-wide that are (item 5=
 above).
The alternate is that the RCSS covers everything a parent advertises in whi=
ch case it is not set by the root but by individual parents.

Or do we need 2 counters?

Pascal

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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear all&nbsp;:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">At the interim today we refined=
 the idea of a Sequence counter in a DIO that increments when there is a ch=
ange in a global option.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For the lack of an acronym that=
 results in SEAL, I&#8217;m using the RPL Configuration State Sequence (RCS=
S) for now.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This concerns options that are =
fully set by the root and propagated unchanged. Seems that this means at th=
is time:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp;<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp;1.&nbsp; The =
Route Information Option (RIO)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; 2.&nbsp; The Prefi=
x Information Option (PIO)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; 3.&nbsp; The DODAG=
 Configuration Option (DCO)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; 4.&nbsp; The Exten=
ded MOP Option (MOPex)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;&nbsp; 5.&nbsp; The Globa=
l Capabilities Option (GCO)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Note that this also means that =
the capabilities have to be split between the parent capabilities (not prot=
ected) and the network-wide that are (item 5 above).<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The alternate is that the RCSS =
covers everything a parent advertises in which case it is not set by the ro=
ot but by individual parents.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Or do we need 2 counters?<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<o:p></o:p></span></p>
</div>
</body>
</html>

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From: Rahul Jadhav <nyrahul@outlook.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: Following up on seq Counter to protect the config option and others
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Date: Tue, 15 Oct 2019 03:47:18 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/5Xr2T5YzY-d-mqnsdzw8TFNrST0>
Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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Note that this also means that the capabilities have to be split between th=
e parent capabilities (not protected) and the network-wide that are (item 5=
 above).

The alternate is that the RCSS covers everything a parent advertises in whi=
ch case it is not set by the root but by individual parents.


[RJ] I think RCSS can be handled by individual parents (similar to DTSN in =
storing MOP). The only problem would be that additional memory i.e., one by=
te per parent would be required in this case. May not be a big problem sinc=
e the parent set is limited in size.



Or do we need 2 counters?


[RJ] IMO, This won't be a good option, memory-wise or handling-wise.

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Note that this also means that the capabilities have to be split between th=
e parent capabilities (not protected) and the network-wide that are (item 5=
 above).<br>
</div>
<div lang=3D"FR">
<div class=3D"x_WordSection1">
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US">The alternate is that the RCSS covers everything a par=
ent advertises in which case it is not set by the root but by individual pa=
rents.</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US">[RJ] I think RCSS can be handled by individual parents=
 (similar to DTSN in storing MOP). The only problem would be that additiona=
l memory i.e., one byte per parent would be required in this case. May not =
be a big problem since the parent
 set is limited in size.</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US">&nbsp;</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US">Or do we need 2 counters?</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal" style=3D"margin: 0cm 0cm 0.0001pt; font-size: 11pt=
; font-family: Calibri, sans-serif;">
<span lang=3D"EN-US">[RJ] IMO, This won't be a good option, memory-wise or =
handling-wise.</span></p>
</div>
</div>
</body>
</html>

--_000_BM1PR01MB261263B41F4E94D9329CB698A9930BM1PR01MB2612INDP_--


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From: Rahul Jadhav <nyrahul@outlook.com>
To: Ines Robles <mariainesrobles@googlemail.com>, Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: REMINDER - WG Virtual Meeting: 2019-10-14
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/kKbZRbmL_eBMxd7LTuAhrjjb1No>
Subject: Re: [Roll] REMINDER - WG Virtual Meeting: 2019-10-14
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Where to look for the audio recording of our interim call yesterday?

Thanks,
Rahul
________________________________
From: Ines Robles <mariainesrobles@googlemail.com>
Sent: Monday, October 14, 2019 9:00 AM
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Cc: Rahul Jadhav <nyrahul@outlook.com>; peter van der Stok <consultancy@van=
derstok.org>
Subject: Re: REMINDER - WG Virtual Meeting: 2019-10-14

Dear all,

The material for the meeting can be found in:

https://github.com/roll-wg/ROLL-Interim-Meeting<https://github.com/roll-wg/=
ROLL-Interim-Meeting/tree/master/20191014>

Regards

Ines

On Mon, Oct 14, 2019 at 11:48 AM Ines Robles <mariainesrobles@googlemail.co=
m<mailto:mariainesrobles@googlemail.com>> wrote:
Dear all,

This a reminder of the interim meeting today.

Thank you very much Rahul for the great slides set!! :-)

Meeting Details:

---------------------------------------------------------------------------=
---------------------------------------------

Webex Details:

Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US & Canada)
Meeting number: 319 527 168
Password: pxT5tCu6
https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec


Join by phone
1-650-479-3208 Call-in toll number (US/Canada)
Access code: 319 527 168

---------------------------------------------------------------------------=
-----------------------------------------

Etherpad: https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014

---------------------------------------------------------------------------=
---------------------------------------

Agenda:

0) Agenda Bashing
1) Note Well https://www.ietf.org/about/note-well/
2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension =
and Capabilities

- Configuration Option Structure
- Cap unaware 6LR
- Capabilities Option structure and semantics

4) AOB

Thanks,

Ines and Peter.



On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav <nyrahul@outlook.com<mailto:nyr=
ahul@outlook.com>> wrote:
Hello all,

The proposed slides for 14th interim are present in the PR https://github.c=
om/roll-wg/ROLL-Interim-Meeting/pull/2
Please let me know if anything is missed.
Ines, please check and accept the PR.

Thanks,
Rahul


________________________________________
From: Roll <roll-bounces@ietf.org<mailto:roll-bounces@ietf.org>> on behalf =
of IESG Secretary <iesg-secretary@ietf.org<mailto:iesg-secretary@ietf.org>>
Sent: Monday, September 30, 2019 1:25 PM
To: IETF-Announce
Cc: roll@ietf.org<mailto:roll@ietf.org>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14

The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.

Agenda:
Draft Agenda:

- Configuration Option structure
- Capabilities unaware 6LR
- Bidirectional Capabilities representation

Information about remote participation:
Topic: Continue with the work on Capabilities and MOPex
Hosted by ROLL WG
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US & Canada)
Meeting number: 319 527 168
Password: pxT5tCu6
https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc8646e17153ec
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168

https://github.com/roll-wg/ROLL-Interim-Meeting

_______________________________________________
Roll mailing list
Roll@ietf.org<mailto:Roll@ietf.org>
https://www.ietf.org/mailman/listinfo/roll

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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Where to look for the audio recording of our interim call yesterday?</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Thanks,</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Rahul</div>
<div id=3D"appendonsend"></div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Ines Robles &lt;maria=
inesrobles@googlemail.com&gt;<br>
<b>Sent:</b> Monday, October 14, 2019 9:00 AM<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;roll@ietf.org&gt;<=
br>
<b>Cc:</b> Rahul Jadhav &lt;nyrahul@outlook.com&gt;; peter van der Stok &lt=
;consultancy@vanderstok.org&gt;<br>
<b>Subject:</b> Re: REMINDER - WG Virtual Meeting: 2019-10-14</font>
<div>&nbsp;</div>
</div>
<div>
<div dir=3D"ltr">Dear all,
<div><br>
</div>
<div>The material for the meeting can be found in:
<div><br>
</div>
<div><a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master=
/20191014" style=3D"margin:0px; padding:0px; white-space:pre-wrap; font-fam=
ily:Arial,sans-serif; font-size:12px">https://github.com/roll-wg/ROLL-Inter=
im-Meeting</a><br>
</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Ines</div>
</div>
</div>
<br>
<div class=3D"x_gmail_quote">
<div dir=3D"ltr" class=3D"x_gmail_attr">On Mon, Oct 14, 2019 at 11:48 AM In=
es Robles &lt;<a href=3D"mailto:mariainesrobles@googlemail.com">mariainesro=
bles@googlemail.com</a>&gt; wrote:<br>
</div>
<blockquote class=3D"x_gmail_quote" style=3D"margin:0px 0px 0px 0.8ex; bord=
er-left:1px solid rgb(204,204,204); padding-left:1ex">
<div dir=3D"ltr">
<div>Dear all,&nbsp;</div>
<div><br>
</div>
<div>This a reminder of the interim meeting today.</div>
<div><br>
</div>
<div>Thank you very much Rahul for the great slides set!! :-)</div>
<div><br>
</div>
<div>Meeting Details:</div>
<div><br>
</div>
<div>----------------------------------------------------------------------=
--------------------------------------------------<br>
<br>
Webex Details:<br>
<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
<br>
<br>
Join by phone<br>
1-650-479-3208 Call-in toll number (US/Canada)<br>
Access code: 319 527 168<br>
<br>
---------------------------------------------------------------------------=
-----------------------------------------<br>
<br>
Etherpad: <a href=3D"https://etherpad.ietf.org/p/roll-interim-virtual-meeti=
ng-20191014" target=3D"_blank">
https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014</a><br>
<br>
---------------------------------------------------------------------------=
---------------------------------------<br>
<br>
Agenda:<br>
<br>
0) Agenda Bashing<br>
1) Note Well <a href=3D"https://www.ietf.org/about/note-well/" target=3D"_b=
lank">https://www.ietf.org/about/note-well/</a><br>
2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension =
and Capabilities<br>
<br>
- Configuration Option Structure<br>
- Cap unaware 6LR<br>
- Capabilities Option structure and semantics<br>
<br>
4) AOB<br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Ines and Peter.</div>
<div><br>
</div>
<div><br>
</div>
<br>
<div class=3D"x_gmail_quote">
<div dir=3D"ltr" class=3D"x_gmail_attr">On Wed, Oct 9, 2019 at 3:29 PM Rahu=
l Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=3D"_blank">nyrah=
ul@outlook.com</a>&gt; wrote:<br>
</div>
<blockquote class=3D"x_gmail_quote" style=3D"margin:0px 0px 0px 0.8ex; bord=
er-left:1px solid rgb(204,204,204); padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Hello all,&nbsp;</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
The proposed slides for 14th interim are present in the PR&nbsp;<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"x_gmail-m_511=
5374259946801496gmail-m_-7299942161684321182LPNoLP370292" target=3D"_blank"=
>https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Please let me know if anything is missed.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Ines, please check and accept the PR.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
Rahul</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<div id=3D"x_gmail-m_5115374259946801496gmail-m_-7299942161684321182appendo=
nsend"></div>
<font size=3D"2"><span style=3D"font-size:11pt">
<div><br>
________________________________________<br>
From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">r=
oll-bounces@ietf.org</a>&gt; on behalf of IESG Secretary &lt;<a href=3D"mai=
lto:iesg-secretary@ietf.org" target=3D"_blank">iesg-secretary@ietf.org</a>&=
gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</a><br=
>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
- Bidirectional Capabilities representation<br>
<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168<br>
<br>
<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting" target=3D"_blan=
k">https://github.com/roll-wg/ROLL-Interim-Meeting</a><br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/roll</a><br>
</div>
</span></font></div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</body>
</html>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Tue, 15 Oct 2019 10:28:01 +0300
Message-ID: <CAP+sJUcyKwhZ_uLO62LaKAOw3L8b+-grsQFMFhur3tCtca3fyA@mail.gmail.com>
To: Rahul Jadhav <nyrahul@outlook.com>
Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, peter van der Stok <consultancy@vanderstok.org>
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Subject: Re: [Roll] REMINDER - WG Virtual Meeting: 2019-10-14
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Hi,

We are still working on getting the video. We will keep you posted about
it.

Thank you and best regards,

Ines.

On Tue, Oct 15, 2019 at 6:53 AM Rahul Jadhav <nyrahul@outlook.com> wrote:

> Where to look for the audio recording of our interim call yesterday?
>
> Thanks,
> Rahul
> ------------------------------
> *From:* Ines Robles <mariainesrobles@googlemail.com>
> *Sent:* Monday, October 14, 2019 9:00 AM
> *To:* Routing Over Low power and Lossy networks <roll@ietf.org>
> *Cc:* Rahul Jadhav <nyrahul@outlook.com>; peter van der Stok <
> consultancy@vanderstok.org>
> *Subject:* Re: REMINDER - WG Virtual Meeting: 2019-10-14
>
> Dear all,
>
> The material for the meeting can be found in:
>
> https://github.com/roll-wg/ROLL-Interim-Meeting
> <https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master/20191014>
>
> Regards
>
> Ines
>
> On Mon, Oct 14, 2019 at 11:48 AM Ines Robles <
> mariainesrobles@googlemail.com> wrote:
>
> Dear all,
>
> This a reminder of the interim meeting today.
>
> Thank you very much Rahul for the great slides set!! :-)
>
> Meeting Details:
>
>
> ------------------------------------------------------------------------------------------------------------------------
>
> Webex Details:
>
> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
> Time (US & Canada)
> Meeting number: 319 527 168
> Password: pxT5tCu6
> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
>
>
> Join by phone
> 1-650-479-3208 Call-in toll number (US/Canada)
> Access code: 319 527 168
>
>
> --------------------------------------------------------------------------------------------------------------------
>
> Etherpad:
> https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014
>
>
> ------------------------------------------------------------------------------------------------------------------
>
> Agenda:
>
> 0) Agenda Bashing
> 1) Note Well https://www.ietf.org/about/note-well/
> 2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension
> and Capabilities
>
> - Configuration Option Structure
> - Cap unaware 6LR
> - Capabilities Option structure and semantics
>
> 4) AOB
>
> Thanks,
>
> Ines and Peter.
>
>
>
> On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav <nyrahul@outlook.com> wrote:
>
> Hello all,
>
> The proposed slides for 14th interim are present in the PR
> https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2
> Please let me know if anything is missed.
> Ines, please check and accept the PR.
>
> Thanks,
> Rahul
>
>
> ________________________________________
> From: Roll <roll-bounces@ietf.org> on behalf of IESG Secretary <
> iesg-secretary@ietf.org>
> Sent: Monday, September 30, 2019 1:25 PM
> To: IETF-Announce
> Cc: roll@ietf.org
> Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG
> Virtual Meeting: 2019-10-14
>
> The Routing Over Low power and Lossy networks (roll) Working Group will
> hold
> a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.
>
> Agenda:
> Draft Agenda:
>
> - Configuration Option structure
> - Capabilities unaware 6LR
> - Bidirectional Capabilities representation
>
> Information about remote participation:
> Topic: Continue with the work on Capabilities and MOPex
> Hosted by ROLL WG
> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
> Time (US & Canada)
> Meeting number: 319 527 168
> Password: pxT5tCu6
> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
> Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code:
> 319 527 168
>
> https://github.com/roll-wg/ROLL-Interim-Meeting
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>
>

--0000000000004ab51c0594eded9d
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi,<div><br></div><div>We are still working on getting the=
 video. We will keep you posted about it.=C2=A0</div><div><br></div><div>Th=
ank you and best regards,</div><div><br></div><div>Ines.</div></div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Oct 1=
5, 2019 at 6:53 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com">=
nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204)=
;padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Where to look for the audio recording of our interim call yesterday?</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div id=3D"gmail-m_-2101432949436061263appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_-2101432949436061263divRplyFwdMsg" dir=3D"ltr"><font fac=
e=3D"Calibri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>Fro=
m:</b> Ines Robles &lt;<a href=3D"mailto:mariainesrobles@googlemail.com" ta=
rget=3D"_blank">mariainesrobles@googlemail.com</a>&gt;<br>
<b>Sent:</b> Monday, October 14, 2019 9:00 AM<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;<a href=3D"mailto:=
roll@ietf.org" target=3D"_blank">roll@ietf.org</a>&gt;<br>
<b>Cc:</b> Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=
=3D"_blank">nyrahul@outlook.com</a>&gt;; peter van der Stok &lt;<a href=3D"=
mailto:consultancy@vanderstok.org" target=3D"_blank">consultancy@vanderstok=
.org</a>&gt;<br>
<b>Subject:</b> Re: REMINDER - WG Virtual Meeting: 2019-10-14</font>
<div>=C2=A0</div>
</div>
<div>
<div dir=3D"ltr">Dear all,
<div><br>
</div>
<div>The material for the meeting can be found in:
<div><br>
</div>
<div><a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master=
/20191014" style=3D"margin:0px;padding:0px;white-space:pre-wrap;font-family=
:Arial,sans-serif;font-size:12px" target=3D"_blank">https://github.com/roll=
-wg/ROLL-Interim-Meeting</a><br>
</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Ines</div>
</div>
</div>
<br>
<div>
<div dir=3D"ltr">On Mon, Oct 14, 2019 at 11:48 AM Ines Robles &lt;<a href=
=3D"mailto:mariainesrobles@googlemail.com" target=3D"_blank">mariainesroble=
s@googlemail.com</a>&gt; wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div>Dear all,=C2=A0</div>
<div><br>
</div>
<div>This a reminder of the interim meeting today.</div>
<div><br>
</div>
<div>Thank you very much Rahul for the great slides set!! :-)</div>
<div><br>
</div>
<div>Meeting Details:</div>
<div><br>
</div>
<div>----------------------------------------------------------------------=
--------------------------------------------------<br>
<br>
Webex Details:<br>
<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
<br>
<br>
Join by phone<br>
1-650-479-3208 Call-in toll number (US/Canada)<br>
Access code: 319 527 168<br>
<br>
---------------------------------------------------------------------------=
-----------------------------------------<br>
<br>
Etherpad: <a href=3D"https://etherpad.ietf.org/p/roll-interim-virtual-meeti=
ng-20191014" target=3D"_blank">
https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014</a><br>
<br>
---------------------------------------------------------------------------=
---------------------------------------<br>
<br>
Agenda:<br>
<br>
0) Agenda Bashing<br>
1) Note Well <a href=3D"https://www.ietf.org/about/note-well/" target=3D"_b=
lank">https://www.ietf.org/about/note-well/</a><br>
2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension =
and Capabilities<br>
<br>
- Configuration Option Structure<br>
- Cap unaware 6LR<br>
- Capabilities Option structure and semantics<br>
<br>
4) AOB<br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Ines and Peter.</div>
<div><br>
</div>
<div><br>
</div>
<br>
<div>
<div dir=3D"ltr">On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav &lt;<a href=3D=
"mailto:nyrahul@outlook.com" target=3D"_blank">nyrahul@outlook.com</a>&gt; =
wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Hello all,=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The proposed slides for 14th interim are present in the PR=C2=A0<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"gmail-m_-2101=
432949436061263x_gmail-m_5115374259946801496gmail-m_-7299942161684321182LPN=
oLP370292" target=3D"_blank">https://github.com/roll-wg/ROLL-Interim-Meetin=
g/pull/2</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Please let me know if anything is missed.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Ines, please check and accept the PR.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
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<font size=3D"2"><span style=3D"font-size:11pt">
<div><br>
________________________________________<br>
From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">r=
oll-bounces@ietf.org</a>&gt; on behalf of IESG Secretary &lt;<a href=3D"mai=
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gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</a><br=
>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
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<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
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Meeting number: 319 527 168<br>
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Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
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<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting" target=3D"_blan=
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Roll mailing list<br>
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</blockquote>
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</div>
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</blockquote></div>

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From: Abdussalam Baryun <abdussalambaryun@gmail.com>
Date: Tue, 15 Oct 2019 09:28:58 +0200
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Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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On Mon, Oct 14, 2019 at 6:57 PM Pascal Thubert (pthubert) <
pthubert@cisco.com> wrote:

> Dear all :
>
> *   At the interim today we refined the idea of a Sequence counter in a
> DIO that increments when there is a change in a global option.*
>

Ok, but I think the incrimination to be different per different
changes  (changes possibilities with different increment number, so any
change case can be identified and corrected)

* For the lack of an acronym that results in SEAL, I=E2=80=99m using the RP=
L
> Configuration State Sequence (RCSS) for now. This concerns options that a=
re
> fully set by the root and propagated unchanged. Seems that this means at
> this time:        1.  The Route Information Option (RIO)    2.  The Prefi=
x
> Information Option (PIO)    3.  The DODAG Configuration Option (DCO)    4=
.
> The Extended MOP Option (MOPex)    5.  The Global Capabilities Option (GC=
O)
> *
>

options can be more or less depending on the LLN

> *  Note that this also means that the capabilities have to be split
> between the parent capabilities (not protected) and the network-wide that
> are (item 5 above). The alternate is that the RCSS covers everything a
> parent advertises in which case it is not set by the root but by individu=
al
> parents.   Or do we need 2 counters? *
>

one counter per parent.

AB

--000000000000d2c0540594edf17b
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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div class=3D"gmail_attr" dir=3D"ltr">On Mon, Oct 14, 2019 at 6:57 PM Pasca=
l Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.com">pthubert@cis=
co.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204)=
;border-left-width:1px;border-left-style:solid">





<div lang=3D"FR">
<div>
<p class=3D"MsoNormal">Dear all=C2=A0:<u><u></u></u></p><u><u>
<p class=3D"MsoNormal"><u>=C2=A0<u></u></u></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">At the interim today we refined=
 the idea of a Sequence counter in a DIO that increments when there is a ch=
ange in a global option.</span></p></u></u></u></u></div></div></blockquote=
><div><br></div><div>Ok, but I think the incrimination to be different per =
different changes=C2=A0=C2=A0(changes possibilities with different incremen=
t number, so any change case can be identified and corrected)</div><div><br=
></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;b=
order-left-style:solid"><div lang=3D"FR"><div><u><u><u><u><p class=3D"MsoNo=
rmal"><span lang=3D"EN-US"><u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For the lack of an acronym that=
 results in SEAL, I=E2=80=99m using the RPL Configuration State Sequence (R=
CSS) for now.
<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This concerns options that are =
fully set by the root and propagated unchanged. Seems that this means at th=
is time:
<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0=C2=A0<u><u></u></u=
></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0=C2=A01.=C2=A0 The =
Route Information Option (RIO)<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 2.=C2=A0 The Prefi=
x Information Option (PIO)<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 3.=C2=A0 The DODAG=
 Configuration Option (DCO)<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 4.=C2=A0 The Exten=
ded MOP Option (MOPex)<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 5.=C2=A0 The Globa=
l Capabilities Option (GCO)<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u></span></p></u></u></u><=
/u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u>=
</div></div></blockquote><div><br></div><div>options=C2=A0can be more or le=
ss depending on the LLN=C2=A0</div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204=
,204);border-left-width:1px;border-left-style:solid"><div lang=3D"FR"><div>=
<u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><u><p class=
=3D"MsoNormal"><span lang=3D"EN-US"><u>=C2=A0<u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Note that this also means that =
the capabilities have to be split between the parent capabilities (not prot=
ected) and the network-wide that are (item 5 above).<u><u></u></u></span></=
p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The alternate is that the RCSS =
covers everything a parent advertises in which case it is not set by the ro=
ot but by individual parents.<u><u></u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u>=C2=A0<u></u></u></span></p>=
<u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Or do we need 2 counters?<u><u>=
</u></u></span></p><u><u>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u></span></p></u></u></u><=
/u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u></u>=
</u></u></u></u></u></u></u></u></u></u></div></div></blockquote><div><br><=
/div><div>one counter per parent.</div><div><br></div><div>AB</div><div><br=
></div><div><u><u><u>
<br></u></u></u></div></div></div>

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Hi,

Please find below the link to the video recording.

Meeting 23 Sept:
https://github.com/roll-wg/ROLL-Interim-Meeting/blob/master/20190923/Recording-Link-20190923

Meeting 14 Oct:
https://github.com/roll-wg/ROLL-Interim-Meeting/blob/master/20191014/Recording-Link-20191014

Thank you,

Ines and Peter

On Tue, Oct 15, 2019 at 10:28 AM Ines Robles <mariainesrobles@googlemail.com>
wrote:

> Hi,
>
> We are still working on getting the video. We will keep you posted about
> it.
>
> Thank you and best regards,
>
> Ines.
>
> On Tue, Oct 15, 2019 at 6:53 AM Rahul Jadhav <nyrahul@outlook.com> wrote:
>
>> Where to look for the audio recording of our interim call yesterday?
>>
>> Thanks,
>> Rahul
>> ------------------------------
>> *From:* Ines Robles <mariainesrobles@googlemail.com>
>> *Sent:* Monday, October 14, 2019 9:00 AM
>> *To:* Routing Over Low power and Lossy networks <roll@ietf.org>
>> *Cc:* Rahul Jadhav <nyrahul@outlook.com>; peter van der Stok <
>> consultancy@vanderstok.org>
>> *Subject:* Re: REMINDER - WG Virtual Meeting: 2019-10-14
>>
>> Dear all,
>>
>> The material for the meeting can be found in:
>>
>> https://github.com/roll-wg/ROLL-Interim-Meeting
>> <https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master/20191014>
>>
>> Regards
>>
>> Ines
>>
>> On Mon, Oct 14, 2019 at 11:48 AM Ines Robles <
>> mariainesrobles@googlemail.com> wrote:
>>
>> Dear all,
>>
>> This a reminder of the interim meeting today.
>>
>> Thank you very much Rahul for the great slides set!! :-)
>>
>> Meeting Details:
>>
>>
>> ------------------------------------------------------------------------------------------------------------------------
>>
>> Webex Details:
>>
>> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
>> Time (US & Canada)
>> Meeting number: 319 527 168
>> Password: pxT5tCu6
>> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
>>
>>
>> Join by phone
>> 1-650-479-3208 Call-in toll number (US/Canada)
>> Access code: 319 527 168
>>
>>
>> --------------------------------------------------------------------------------------------------------------------
>>
>> Etherpad:
>> https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014
>>
>>
>> ------------------------------------------------------------------------------------------------------------------
>>
>> Agenda:
>>
>> 0) Agenda Bashing
>> 1) Note Well https://www.ietf.org/about/note-well/
>> 2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation
>> extension and Capabilities
>>
>> - Configuration Option Structure
>> - Cap unaware 6LR
>> - Capabilities Option structure and semantics
>>
>> 4) AOB
>>
>> Thanks,
>>
>> Ines and Peter.
>>
>>
>>
>> On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav <nyrahul@outlook.com> wrote:
>>
>> Hello all,
>>
>> The proposed slides for 14th interim are present in the PR
>> https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2
>> Please let me know if anything is missed.
>> Ines, please check and accept the PR.
>>
>> Thanks,
>> Rahul
>>
>>
>> ________________________________________
>> From: Roll <roll-bounces@ietf.org> on behalf of IESG Secretary <
>> iesg-secretary@ietf.org>
>> Sent: Monday, September 30, 2019 1:25 PM
>> To: IETF-Announce
>> Cc: roll@ietf.org
>> Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG
>> Virtual Meeting: 2019-10-14
>>
>> The Routing Over Low power and Lossy networks (roll) Working Group will
>> hold
>> a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.
>>
>> Agenda:
>> Draft Agenda:
>>
>> - Configuration Option structure
>> - Capabilities unaware 6LR
>> - Bidirectional Capabilities representation
>>
>> Information about remote participation:
>> Topic: Continue with the work on Capabilities and MOPex
>> Hosted by ROLL WG
>> Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern
>> Time (US & Canada)
>> Meeting number: 319 527 168
>> Password: pxT5tCu6
>> https://ietf.webex.com/ietf/j.php?MTID=mbf22e8e09dfa7a79eccc8646e17153ec
>> Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code:
>> 319 527 168
>>
>> https://github.com/roll-wg/ROLL-Interim-Meeting
>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
>>

--0000000000001532660594ee717b
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi,</div><div dir=3D"ltr"><br></div><div>=
Please find below the link to the video recording.</div><div><br></div><div=
>Meeting 23 Sept:=C2=A0<a href=3D"https://github.com/roll-wg/ROLL-Interim-M=
eeting/blob/master/20190923/Recording-Link-20190923">https://github.com/rol=
l-wg/ROLL-Interim-Meeting/blob/master/20190923/Recording-Link-20190923</a><=
/div><div><br></div><div>Meeting 14 Oct:=C2=A0<a href=3D"https://github.com=
/roll-wg/ROLL-Interim-Meeting/blob/master/20191014/Recording-Link-20191014"=
>https://github.com/roll-wg/ROLL-Interim-Meeting/blob/master/20191014/Recor=
ding-Link-20191014</a></div><div><br></div><div>Thank you,</div><div><br></=
div><div>Ines and Peter</div><br><div class=3D"gmail_quote"><div dir=3D"ltr=
" class=3D"gmail_attr">On Tue, Oct 15, 2019 at 10:28 AM Ines  Robles &lt;<a=
 href=3D"mailto:mariainesrobles@googlemail.com">mariainesrobles@googlemail.=
com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1e=
x"><div dir=3D"ltr">Hi,<div><br></div><div>We are still working on getting =
the video. We will keep you posted about it.=C2=A0</div><div><br></div><div=
>Thank you and best regards,</div><div><br></div><div>Ines.</div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Oc=
t 15, 2019 at 6:53 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.co=
m" target=3D"_blank">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px s=
olid rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Where to look for the audio recording of our interim call yesterday?</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div id=3D"gmail-m_-7251709156546320328gmail-m_-2101432949436061263appendon=
send"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_-7251709156546320328gmail-m_-2101432949436061263divRplyF=
wdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" style=3D"font-size:11=
pt" color=3D"#000000"><b>From:</b> Ines Robles &lt;<a href=3D"mailto:mariai=
nesrobles@googlemail.com" target=3D"_blank">mariainesrobles@googlemail.com<=
/a>&gt;<br>
<b>Sent:</b> Monday, October 14, 2019 9:00 AM<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;<a href=3D"mailto:=
roll@ietf.org" target=3D"_blank">roll@ietf.org</a>&gt;<br>
<b>Cc:</b> Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=
=3D"_blank">nyrahul@outlook.com</a>&gt;; peter van der Stok &lt;<a href=3D"=
mailto:consultancy@vanderstok.org" target=3D"_blank">consultancy@vanderstok=
.org</a>&gt;<br>
<b>Subject:</b> Re: REMINDER - WG Virtual Meeting: 2019-10-14</font>
<div>=C2=A0</div>
</div>
<div>
<div dir=3D"ltr">Dear all,
<div><br>
</div>
<div>The material for the meeting can be found in:
<div><br>
</div>
<div><a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting/tree/master=
/20191014" style=3D"margin:0px;padding:0px;white-space:pre-wrap;font-family=
:Arial,sans-serif;font-size:12px" target=3D"_blank">https://github.com/roll=
-wg/ROLL-Interim-Meeting</a><br>
</div>
<div><br>
</div>
<div>Regards</div>
<div><br>
</div>
<div>Ines</div>
</div>
</div>
<br>
<div>
<div dir=3D"ltr">On Mon, Oct 14, 2019 at 11:48 AM Ines Robles &lt;<a href=
=3D"mailto:mariainesrobles@googlemail.com" target=3D"_blank">mariainesroble=
s@googlemail.com</a>&gt; wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div>Dear all,=C2=A0</div>
<div><br>
</div>
<div>This a reminder of the interim meeting today.</div>
<div><br>
</div>
<div>Thank you very much Rahul for the great slides set!! :-)</div>
<div><br>
</div>
<div>Meeting Details:</div>
<div><br>
</div>
<div>----------------------------------------------------------------------=
--------------------------------------------------<br>
<br>
Webex Details:<br>
<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
<br>
<br>
Join by phone<br>
1-650-479-3208 Call-in toll number (US/Canada)<br>
Access code: 319 527 168<br>
<br>
---------------------------------------------------------------------------=
-----------------------------------------<br>
<br>
Etherpad: <a href=3D"https://etherpad.ietf.org/p/roll-interim-virtual-meeti=
ng-20191014" target=3D"_blank">
https://etherpad.ietf.org/p/roll-interim-virtual-meeting-20191014</a><br>
<br>
---------------------------------------------------------------------------=
---------------------------------------<br>
<br>
Agenda:<br>
<br>
0) Agenda Bashing<br>
1) Note Well <a href=3D"https://www.ietf.org/about/note-well/" target=3D"_b=
lank">https://www.ietf.org/about/note-well/</a><br>
2) Discuss about: draft-ietf-roll-mopex-cap-00 Mode of Operation extension =
and Capabilities<br>
<br>
- Configuration Option Structure<br>
- Cap unaware 6LR<br>
- Capabilities Option structure and semantics<br>
<br>
4) AOB<br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Ines and Peter.</div>
<div><br>
</div>
<div><br>
</div>
<br>
<div>
<div dir=3D"ltr">On Wed, Oct 9, 2019 at 3:29 PM Rahul Jadhav &lt;<a href=3D=
"mailto:nyrahul@outlook.com" target=3D"_blank">nyrahul@outlook.com</a>&gt; =
wrote:<br>
</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Hello all,=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The proposed slides for 14th interim are present in the PR=C2=A0<a href=3D"=
https://github.com/roll-wg/ROLL-Interim-Meeting/pull/2" id=3D"gmail-m_-7251=
709156546320328gmail-m_-2101432949436061263x_gmail-m_5115374259946801496gma=
il-m_-7299942161684321182LPNoLP370292" target=3D"_blank">https://github.com=
/roll-wg/ROLL-Interim-Meeting/pull/2</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Please let me know if anything is missed.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Ines, please check and accept the PR.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thanks,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div id=3D"gmail-m_-7251709156546320328gmail-m_-2101432949436061263x_gmail-=
m_5115374259946801496gmail-m_-7299942161684321182appendonsend"></div>
<font size=3D"2"><span style=3D"font-size:11pt">
<div><br>
________________________________________<br>
From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">r=
oll-bounces@ietf.org</a>&gt; on behalf of IESG Secretary &lt;<a href=3D"mai=
lto:iesg-secretary@ietf.org" target=3D"_blank">iesg-secretary@ietf.org</a>&=
gt;<br>
Sent: Monday, September 30, 2019 1:25 PM<br>
To: IETF-Announce<br>
Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</a><br=
>
Subject: [Roll] Routing Over Low power and Lossy networks (roll) WG Virtual=
 Meeting: 2019-10-14<br>
<br>
The Routing Over Low power and Lossy networks (roll) Working Group will hol=
d<br>
a virtual interim meeting on 2019-10-14 from 13:00 to 15:00 UTC.<br>
<br>
Agenda:<br>
Draft Agenda:<br>
<br>
- Configuration Option structure<br>
- Capabilities unaware 6LR<br>
- Bidirectional Capabilities representation<br>
<br>
Information about remote participation:<br>
Topic: Continue with the work on Capabilities and MOPex<br>
Hosted by ROLL WG<br>
Monday, Oct 14, 2019 8:45 am | 2 hours 15 minutes | (UTC-05:00) Eastern Tim=
e (US &amp; Canada)<br>
Meeting number: 319 527 168<br>
Password: pxT5tCu6<br>
<a href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmbf22e8e09dfa7a79eccc86=
46e17153ec" target=3D"_blank">https://ietf.webex.com/ietf/j.php?MTID=3Dmbf2=
2e8e09dfa7a79eccc8646e17153ec</a><br>
Join by phone 1-650-479-3208 Call-in toll number (US/Canada) Access code: 3=
19 527 168<br>
<br>
<a href=3D"https://github.com/roll-wg/ROLL-Interim-Meeting" target=3D"_blan=
k">https://github.com/roll-wg/ROLL-Interim-Meeting</a><br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/roll</a><br>
</div>
</span></font></div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</div>

</blockquote></div>
</blockquote></div></div>

--0000000000001532660594ee717b--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: Following up on seq Counter to protect the config option and others
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/BFwiJyn3-z9HUVI6nXZm7qXqjdg>
Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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Hello Rahul

We want to protect a global configuration with a sequence set by the root b=
ecause the root is authoritative in them.
Why? A node may receive different levels of config from different parents a=
nd one of them may be back level. The node needs a freshness indication. It=
 may want a signature in the future.
=3D> We need to split the capabilities that go in the DIO and that are prot=
ected by the RCSS from the rest and think about how we protect that rest.

Makes sense?

Pascal

From: Roll <roll-bounces@ietf.org> On Behalf Of Rahul Jadhav
Sent: mardi 15 octobre 2019 05:47
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Subject: Re: [Roll] Following up on seq Counter to protect the config optio=
n and others

Note that this also means that the capabilities have to be split between th=
e parent capabilities (not protected) and the network-wide that are (item 5=
 above).

The alternate is that the RCSS covers everything a parent advertises in whi=
ch case it is not set by the root but by individual parents.



[RJ] I think RCSS can be handled by individual parents (similar to DTSN in =
storing MOP). The only problem would be that additional memory i.e., one by=
te per parent would be required in this case. May not be a big problem sinc=
e the parent set is limited in size.



Or do we need 2 counters?



[RJ] IMO, This won't be a good option, memory-wise or handling-wise.

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<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Hello Rah=
ul<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">We want to protect a global configuration with a sequence set by the =
root because the root is authoritative in them.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Why? A node may receive different levels of config from different par=
ents and one of them may be back level. The node needs a freshness indicati=
on. It may want a signature in the future.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=3D&gt; We need to split the capabilities that go in the DIO and that=
 are protected by the RCSS from the rest and think about how we protect tha=
t rest.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Makes sense?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Pascal
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;roll-bounces@ietf.org&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> mardi 15 octobre 2019 05:47<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;roll@ietf.org&gt;<=
br>
<b>Subject:</b> Re: [Roll] Following up on seq Counter to protect the confi=
g option and others<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Note th=
at this also means that the capabilities have to be split between the paren=
t capabilities (not protected) and the network-wide that are (item 5 above)=
.<o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"xmsonormal"><span lang=3D"EN-US">The alternate is that the RCSS=
 covers everything a parent advertises in which case it is not set by the r=
oot but by individual parents.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">[RJ] I think RCSS can be handl=
ed by individual parents (similar to DTSN in storing MOP). The only problem=
 would be that additional memory i.e., one byte per parent would be require=
d in this case. May not be a big problem
 since the parent set is limited in size.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Or do we need 2 counters?</spa=
n><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">[RJ] IMO, This won't be a good=
 option, memory-wise or handling-wise.</span><o:p></o:p></p>
</div>
</div>
</div>
</body>
</html>

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From: Rahul Jadhav <nyrahul@outlook.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: Following up on seq Counter to protect the config option and others
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/NkFfR8eiWEy-4OX6QFYGbkjroE0>
Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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We want to protect a global configuration with a sequence set by the root b=
ecause the root is authoritative in them.

Why? A node may receive different levels of config from different parents a=
nd one of them may be back level. The node needs a freshness indication. It=
 may want a signature in the future.

=3D> We need to split the capabilities that go in the DIO and that are prot=
ected by the RCSS from the rest and think about how we protect that rest.



Makes sense?



[RJ] Yes, the problem with RCSS been controlled by individual parents is th=
at it is not possible to know if the root caps are changed. And we certainl=
y need that. So we need to split the caps and use two counters?




From: Roll <roll-bounces@ietf.org> On Behalf Of Rahul Jadhav
Sent: mardi 15 octobre 2019 05:47
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Subject: Re: [Roll] Following up on seq Counter to protect the config optio=
n and others



Note that this also means that the capabilities have to be split between th=
e parent capabilities (not protected) and the network-wide that are (item 5=
 above)..

The alternate is that the RCSS covers everything a parent advertises in whi=
ch case it is not set by the root but by individual parents.



[RJ] I think RCSS can be handled by individual parents (similar to DTSN in =
storing MOP). The only problem would be that additional memory i.e., one by=
te per parent would be required in this case. May not be a big problem sinc=
e the parent set is limited in size.



Or do we need 2 counters?



[RJ] IMO, This won't be a good option, memory-wise or handling-wise.

--_000_BM1PR01MB2612A801ED80473E07AFEE01A9930BM1PR01MB2612INDP_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
</div>
<div lang=3D"FR">
<div class=3D"x_WordSection1">
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span style=3D"">&nbsp;</span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">We want to protect a global configuration w=
ith a sequence set by the root because the root is authoritative in them.</=
span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">Why? A node may receive different levels of=
 config from different parents and one of them may be back level. The node =
needs a freshness indication. It may want a signature in the future.</span>=
</p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">=3D&gt; We need to split the capabilities t=
hat go in the DIO and that are protected by the RCSS from the rest and thin=
k about how we protect that rest.</span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">&nbsp;</span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">Makes sense?</span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">&nbsp;</span></p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
[RJ] Yes, the problem with RCSS been controlled by individual parents is th=
at it is not possible to know if the root caps are changed. And we certainl=
y need that. So we need to split the caps and use two counters?</p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<br>
</p>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US" style=3D"">&nbsp;</span></p>
<div>
<div style=3D"border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0c=
m 0cm 0cm">
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<b><span lang=3D"EN-US">From:</span></b><span lang=3D"EN-US"> Roll &lt;roll=
-bounces@ietf.org&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> mardi 15 octobre 2019 05:47<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;roll@ietf.org&gt;<=
br>
<b>Subject:</b> Re: [Roll] Following up on seq Counter to protect the confi=
g option and others</span></p>
</div>
</div>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
&nbsp;</p>
<div>
<p class=3D"x_MsoNormal" style=3D"margin-top: 0px; margin-bottom: 0px;margi=
n:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span style=3D"font-size:12.0pt; color:black">Note that this also means tha=
t the capabilities have to be split between the parent capabilities (not pr=
otected) and the network-wide that are (item 5 above)..</span></p>
</div>
<div>
<div>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US">The alternate is that the RCSS covers everything a par=
ent advertises in which case it is not set by the root but by individual pa=
rents.</span></p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
&nbsp;</p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US">[RJ] I think RCSS can be handled by individual parents=
 (similar to DTSN in storing MOP). The only problem would be that additiona=
l memory i.e., one byte per parent would be required in this case. May not =
be a big problem since the parent
 set is limited in size.</span></p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US">&nbsp;</span></p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US">Or do we need 2 counters?</span></p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
&nbsp;</p>
<p class=3D"x_xmsonormal" style=3D"margin-top: 0px; margin-bottom: 0px;marg=
in:0cm 0cm 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif">
<span lang=3D"EN-US">[RJ] IMO, This won't be a good option, memory-wise or =
handling-wise.</span></p>
</div>
</div>
</div>
</div>
</body>
</html>

--_000_BM1PR01MB2612A801ED80473E07AFEE01A9930BM1PR01MB2612INDP_--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: New Version Notification for draft-thubert-roll-eliding-dio-information-00.txt
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Subject: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-00.txt
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From nobody Wed Oct 16 05:47:40 2019
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Comments: In-reply-to "Pascal Thubert (pthubert)" <pthubert@cisco.com> message dated "Mon, 14 Oct 2019 16:56:23 -0000."
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Date: Wed, 16 Oct 2019 14:48:28 +0200
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Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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--=-=-=
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable


Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
    > At the interim today we refined the idea of a Sequence counter in a D=
IO
    > that increments when there is a change in a global option.=20
    > For the lack of an acronym that results in SEAL, I'm using the RPL
    > Configuration State Sequence (RCSS) for now.
=20=20=20=20
I came up with:

  Special Elided Attribute Lollipop =3D SEAL.
or
  Sequence of Elided Attributes Lollipop =3D SEAL.

=2D-=20
]               Never tell me the odds!                 | ipv6 mesh network=
s [=20
]   Michael Richardson, Sandelman Software Works        | network architect=
  [=20
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails  =
  [=20
=09

--=-=-=
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--=-=-=--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] Following up on seq Counter to protect the config option and others
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Date: Wed, 16 Oct 2019 13:43:21 +0000
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Subject: Re: [Roll] Following up on seq Counter to protect the config option and others
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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To: draft-ietf-roll-efficient-npdao@ietf.org
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Subject: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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Dear authors:

I reviewed the changes (only) and have some comments/questions.
Please take a look below.

I would like for my concerns to be addressed before sending the
document back to the RFC Editor.

Thanks!

Alvaro.


[Line numbers from idnits.]

384	4.3. =C2=A0Destination Cleanup Object (DCO)
...
393	 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3
394	 =C2=A0 =C2=A0 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 =
8 9 0 1
395	 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+
396	 =C2=A0 =C2=A0 | RPLInstanceID |K|D| =C2=A0 Flags =C2=A0 | =C2=A0RPL =
=C2=A0Status =C2=A0| DCOSequence =C2=A0 |
397	 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+
398	 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 |
399	 =C2=A0 =C2=A0 + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 +
400	 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 |
401	 =C2=A0 =C2=A0 + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0DODAGID(optional) =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+
402	 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 |
403	 =C2=A0 =C2=A0 + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 +
404	 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 |
405	 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+
406	 =C2=A0 =C2=A0 | =C2=A0 Option(s)...
407	 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+

[nit] s/RPL =C2=A0Status/RPL Status =C2=A0 To make it easier to search, ple=
ase
eliminate the extra space.


...
434	 =C2=A0 RPL Status: The RPL Status as defined in section 6.5.1 of [RFC6=
550].
435	 =C2=A0 Indicative of the reason why the DCO happened, the RPL Status M=
UST
436	 =C2=A0 NOT be changed as the DCO is propagated down the route being
437	 =C2=A0 invalidated. =C2=A0This value is informative and does not affec=
t the
438	 =C2=A0 behavior of the receiver. =C2=A0In particular, unknown values a=
re ignored
439	 =C2=A0 by the receiver. =C2=A0Only Rejection Codes (values of 128 and =
above) are
440	 =C2=A0 expected in a DCO.

[major] rfc6550 defines a field called "Status" (not "RPL Status") for
the DAO-ACK, which "Indicates the completion", and not "the reason why
the DCO happened". =C2=A0Also, the value of "130 indicating that the
address has moved" is not consistent with what seems to be intent in
the DAO-ACK: "Rejection; the node sending the DAO-ACK is unwilling to
act as a parent." =C2=A0 While the interpretation could be stretched, it
seems to me that it would be better to simply create a new "RPL
Status" field/registry that applies specifically to the DCO.

>From the discussion on the list, it was proposed that a common
registry can be defined in draft-ietf-roll-unaware-leaves. =C2=A0Looking at
that draft, and the fact that it defines "RPL Status values for use in
DAO-ACK and DCO that map the 6LoWPAN ND values defined in Table 1 of
[RFC8505]", where 130 is called "Moved", but the definition in rfc8505
refers to a stale registration... =C2=A0IOW, the use of 130 doesn't seem to
map well to the definitions in rfc8505. =C2=A0This seems to be another
reason to create an independent field/registry.

Is there a strong reason for the reuse?


[major] "the RPL Status MUST NOT be changed...is informative and does
not affect the behavior of the receiver...unknown values are
ignored...Only Rejection Codes (values of 128 and above) are expected
in a DCO."

If the value doesn't matter (informative) and unknown ones are
ignored, why specify that it MUST NOT change? =C2=A0What is the Normative
value of that? =C2=A0Specifically, if the value was changed to something <
128, what should the receiver do?


...
574	4.5. =C2=A0Unsolicited DCO

576	 =C2=A0 A 6LR may generate an unsolicited DCO to unilaterally cleanup t=
he
577	 =C2=A0 path on behalf of the target entry. =C2=A0The 6LR has all the s=
tate
578	 =C2=A0 information, namely, the Target address and the Path Sequence,
579	 =C2=A0 required for generating DCO in its routing table. =C2=A0The con=
ditions why
580	 =C2=A0 6LR may generate an unsolicited DCO are beyond the scope of thi=
s
581	 =C2=A0 document but some possible reasons could be:

583	 =C2=A0 1. =C2=A0On route expiry of an entry, a 6LR may decide to graci=
ously
584	 =C2=A0 =C2=A0 =C2=A0 cleanup the entry by initiating DCO.
585	 =C2=A0 2. =C2=A06LR needs to entertain higher priority entries in case=
 the
586	 =C2=A0 =C2=A0 =C2=A0 routing table is full, thus resulting in eviction=
 of an existing
587	 =C2=A0 =C2=A0 =C2=A0 routing entry. =C2=A0In this case the eviction ca=
n be handled
588	 =C2=A0 =C2=A0 =C2=A0 graciously using DCO.

590	 =C2=A0 Note that if the 6LR initiates a unilateral path cleanup using =
DCO
591	 =C2=A0 and if it has the latest state for the target then the DCO woul=
d
592	 =C2=A0 finally reach the target node. =C2=A0Thus the target node would=
 be
593	 =C2=A0 informed of its invalidation.

[] This section wasn't changed, but it seems to me that there's an
opportunity to indicate these known reasons as Status in the DCO.
Among other things, the target node would be able to identify the
reason for the unsolicited DCO...


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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: [Roll] [Cbor] Constrained Node/Network Cluster @ IETF106: DRAFT AGENDA
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Here is my usual eclectic condensed agenda based on the DRAFT AGENDA
for IETF106.  Remember that there is still quite some potential for
changes.

Conflicts that meet the eye:
LAKE/SUIT (already noted by Russ), BOF on top (thing security): TMRID.
ACE/RATS are also both security technologies that impact IoT.
COSE is a technology that might be relevant for WPACK.

All times are SGT (Singapore Time) =3D=3D UTC + 8 hours (=3D=3D China =
time).
Singapore doesn't obey the daylight savings myth.
(Pure UTC times at https://datatracker.ietf.org/meeting/agenda-utc are
useful for those who want to listen from remote.)

Gr=C3=BC=C3=9Fe, Carsten

FRIDAY, November 15, 2019
-- T2TRG/W3C WoT Workshop @ NUSS (https://is.gd/XWSfi8)

SATURDAY, November 16, 2019
0830-2200  IETF Hackathon - Moor/Morrison

SUNDAY, November 17, 2019
0830-1600  IETF Hackathon - Moor/Morrison
1700-1900  Welcome Reception - Fairmont Ballroom Foyer
1800-2000  Hot RFC Lightning Talks -- Padang

MONDAY, November 18, 2019

1000-1200  Morning Session I
Collyer 	ART	dispatch	Dispatch WG - Joint with ARTAREA
Sophia  	IRTF	icnrg	Information-Centric Networking
VIP A   	SEC ***	rats	Remote ATtestation ProcedureS WG

1330-1530  Afternoon Session I
VIP A   	INT	dnssd	Extensions for Scalable DNS Service =
Discovery WG - Joint with HOMENET
VIP A   	INT	homenet	Home Networking WG - Joint with DNSSD
Hullet  	INT ***	lpwan	IPv6 over Low Power Wide-Area Networks =
WG
Olivia  	IRTF***	dinrg	Decentralized Internet Infrastructure
Canning 	IRTF	pearg	Privacy Enhancements and Assessments =
Research Group
Padang  	SEC	txauth	Transactional Authorization and =
Delegation BOF
Sophia  	TSV	tsvwg	Transport Area Working Group WG

1550-1750  Afternoon Session II
Collyer 	ART	abcd	Application Behavior Considering DNS BOF
Padang  	IRTF	irtfopen	IRTF Open Meeting
Sophia  	OPS	v6ops	IPv6 Operations WG
Orchard 	RTG ***	roll	Routing Over Low power and Lossy =
networks WG
Canning 	SEC	mls	Messaging Layer Security WG

1810-1910  Afternoon Session III
Canning 	INT ***	lwig	Light-Weight Implementation Guidance WG
Olivia  	TSV	rmcat	RTP Media Congestion Avoidance =
Techniques WG

TUESDAY, November 19, 2019

1000-1200  Morning Session I
Hullet  	RTG ***	roll	Routing Over Low power and Lossy =
networks WG
Olivia  	SEC ***	teep	Trusted Execution Environment =
Provisioning WG
Padang  	TSV	quic	QUIC WG

1330-1500  Afternoon Session I
VIP A   	INT	tmrid	Trustworthy Multipurpose Remote ID BOF
Padang  	IRTF	maprg	Measurement and Analysis for Protocols
Canning 	SEC ***	lake	Lightweight Authenticated Key Exchange =
WG
Olivia  	SEC ***	suit	Software Updates for Internet of Things =
WG

1520-1650  Afternoon Session II
Canning 	INT	intarea	Internet Area Working Group WG
Olivia  	SEC ***	ace	Authentication and Authorization for =
Constrained Environments WG
VIP A   	SEC ***	rats	Remote ATtestation ProcedureS WG
Hullet  	TSV	taps	Transport Services WG

1710-1840  Afternoon Session III
Hullet  	IRTF	qirg	Quantum Internet Proposed Research Group
Sophia  	OPS	anima	Autonomic Networking Integrated Model =
and Approach WG
Orchard 	RTG	babel	Babel routing protocol WG
Padang  	SEC	secdispatch	Security Dispatch WG

WEDNESDAY, November 20, 2019

1000-1200  Morning Session I
Collyer 	RTG	raw	Reliable and Available Wireless BOF
Sophia  	SEC ***	teep	Trusted Execution Environment =
Provisioning WG
Padang  	TSV	quic	QUIC WG

1330-1500  Afternoon Session I
Canning 	ART	webtrans	WebTransport BOF
Sophia  	INT ***	6lo	IPv6 over Networks of =
Resource-constrained Nodes WG
Collyer 	IRTF	cfrg	Crypto Forum
Olivia  	SEC	oauth	Web Authorization Protocol WG

1520-1650  Afternoon Session II
Orchard 	ART ***	core	Constrained RESTful Environments WG
Hullet  	OPS	anima	Autonomic Networking Integrated Model =
and Approach WG
Collyer 	SEC	tls	Transport Layer Security WG
Sophia  	TSV	tsvarea	Transport Area Open Meeting

THURSDAY, November 21, 2019

1000-1200  Morning Session I
Sophia  	IRTF***	t2trg	Thing-to-Thing
VIP A   	RTG	bier	Bit Indexed Explicit Replication WG
Padang  	SEC	tls	Transport Layer Security WG
Collyer 	TSV	tsvwg	Transport Area Working Group WG

1330-1530  Afternoon Session I
Collyer 	ART	httpbis	Hypertext Transfer Protocol WG
Sophia  	INT	6man	IPv6 Maintenance WG
Olivia  	RTG	rift	Routing In Fat Trees WG
Canning 	SEC	saag	Security Area Open Meeting

1550-1720  Afternoon Session II
Padang  	ART	wpack	Web Packaging BOF
Canning 	RTG	detnet	Deterministic Networking WG
Sophia  	SEC ***	cose	CBOR Object Signing and Encryption WG
Hullet  	SEC	oauth	Web Authorization Protocol WG

1740-1840  Afternoon Session III
Olivia  	ART ***	cbor	Concise Binary Object Representation =
Maintenance and Extensions WG
Sophia  	GEN	git	GitHub Integration and Tooling WG
Padang  	INT	6man	IPv6 Maintenance WG
Canning 	RTG	detnet	Deterministic Networking WG

FRIDAY, November 22, 2019

1000-1200  Morning Session I
Collyer 	ART	httpbis	Hypertext Transfer Protocol WG
Hullet  	INT ***	6tisch	IPv6 over the TSCH mode of IEEE =
802.15.4e WG
Sophia  	IRTF	coinrg	Computing in the Network Proposed =
Research Group
Olivia  	SEC	mathmesh	MatheMatical Mesh BOF

1220-1350  Morning Session II
Hullet  	ART ***	core	Constrained RESTful Environments WG
Sophia  	IRTF	panrg	Path Aware Networking RG
Olivia  	SEC	acme	Automated Certificate Management =
Environment WG

_______________________________________________
CBOR mailing list
CBOR@ietf.org
https://www.ietf.org/mailman/listinfo/cbor


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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
CC: Peter van der Stok <consultancy@vanderstok.org>, "roll-chairs@ietf.org" <roll-chairs@ietf.org>, roll <roll@ietf.org>
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Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Tue, 22 Oct 2019 16:02:36 +0300
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Hi,

Currently the useofrplinfo draft states:

   RPL-aware-node: A device which implements RPL.  Please note that the
   device can be found inside the LLN or outside LLN.

   <<< This would be the number 3 of Michael descriptions
   Should we extend the definition to insert 3.A, 3.b, 3.C, 3D
descriptions???? >>>>

   RPL-Aware-Leaf(RAL): A RPL-aware-node which is a leaf of a
   (Destination Oriented Directed Acyclic Graph) DODAG.

   RPL-unaware-node: A device which does not implement RPL, thus the
   device is not-RPL-aware.  Please note that the device can be found
   inside the LLN.

   <<< This would be the number 2 of Michael descriptions,
   I am wondering if we could add the need of RFCs6775, RFC8138 and the
others that Michael mentioned
   into section 9 Operational Considerations of supporting
not-RPL-aware-leaves. >>>>

   RPL-Unaware-Leaf(RUL): A RPL-unaware-node which is a leaf of a
   (Destination Oriented Directed Acyclic Graph) DODAG.



   6LoWPAN Node (6LN): [RFC6775] defines it as: "A 6LoWPAN node is any
   host or router participating in a LoWPAN.  This term is used when
   referring to situations in which either a host or router can play the
   role described.".  In this document, a 6LN acts as a leaf.

   6LoWPAN Router (6LR): [RFC6775] defines it as:" An intermediate
   router in the LoWPAN that is able to send and receive Router
   Advertisements (RAs) and Router Solicitations (RSs) as well as
   forward and route IPv6 packets.  6LoWPAN routers are present only in
   route-over topologies."


   We would appreciate to know what the WG thinks about this topic?

   Thank you very much,

   Ines.

On Fri, Oct 11, 2019 at 5:56 PM Michael Richardson <mcr+ietf@sandelman.ca>
wrote:

>
> At the virtual interim a few weeks ago, Pascal and I discussed different
> possible goals for the documents.  Some of the confusion comes down to
> mis-understandings resulting from the choices of names.
>
> Let me go through a series of descriptions and connect some terms as I can
> to
> them.
>
> 1) Host. It was Carsten who first pointed that things that do not route are
>    hosts, and RFC8504 says what a host is supposed to do.
>    RFC8504 does not say anything about being able to decapsulate
> IP(dst:me)IP(dst:me)
>    packets.  I tried to get that in, but 6man was rather hostile to this.
>    RFC8504 also says nothing about supporting 6lowpan stuff!
>
> 2) 6lowpan host.
>    Everything from (1), plus ability to do
>       rfc4944: Transmission of IPv6 Packets over IEEE 802.15.4 Networks
>
>    which means doing some amount of header compression.
>
>    Does it include any of:
>
>    rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Power
> Wireless
>             Personal Area Networks (6LoWPANs)
>    rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over Low-Power
>             Wireless Personal Area Networks
>    rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
>             Paging Dispatch
>    rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
> ESC
>             Dispatch Code Points and Guidelines
>    rfc8505: Registration Extensions for IPv6 over Low-Power Wireless
> Personal
>             Area Network (6LoWPAN) Neighbor Discovery
>    rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
>             Routing Header
>
>    I have no idea.  If someone says a product does "rfc6775", then 4944 is
>    clearly included.   Some of the more recent radios (DECT) may have
> nailed
>    down that they need additional things, but I didn't check.
>
> 3) RPL host.
>    Pascal and I disagree whether to call this an RPL *AWARE* host (because
> it
>    speaks RPL data plane), or an RPL *UNAWARE* host (because it does not
>    speak 6550).  It being a host, it is by definition a leaf.
>
>    We are we want is a definition which includes:
>    A) All the stuff above which we were uncertain about.  Specifically, we
>       really want RFC8505 and RFC6775 to be supported.
>       Specifically, EARO with the TID.
>
>    B) We want these devices to ignore RPI and RH3 headers according
> rfc8200,
>       as useofrplinfo envisions.
>
>    C) We want these devices to accept IP(dst:me),headers,IP(dst:me)
> constructs,
>       as it simplies the useofrplinfo situation for storing mode.  But,
>       we have some ways to work around this in the 6LR in storing mode, but
>       it is a spec change.
>
>    D) Ideally, these hosts would send IPv6 packets with an RPI header
> already
>       inserted.  This eliminates the need to do an IPIP encapsulation at
> the
>       first 6LR.
>
>    A typical example of such a device is a window smash sensor that might
> be
>    part of a (home) security system.  When installed, it might be
> provisioned
>    with some cable for power and control.  Then, having sent out an
> EARO/TID
>    to register with the 6LR/6LBR, it goes into a deep sleep, waking up
>    perhaps weekly or monthly.  If the window is smashed, it send packets,
>    probably until the battery runs dry.  If it is re-used, it is
> effectively
>    refurbished with a new battery and rejoins as if it was a new device.
>
>    There are other examples of sleepy devices which would never be able to
>    forward packets.
>
> 4) 6LR with incompatible MOP, or other handicap.
>
>    Such a device is forced by the rules of 6550 to join the network as a
> leaf.
>    It is unclear to me if it is allowed to send DAOs for itself, or if it
> has
>    to use ND like (3) above.  Clearly it listens to DIOs, because that's
> how
>    it learnt that it couldn't join as a router.  The key thing is that it
>    does not emit DIOs, and thus never attracts any children.
>
>    {It is distinguished from a 6LR which just happens to be leaf, because
>    there are no children that have picked it as a parent.  Such a 6LR sends
>    out peridic DIOs according trickle}
>
> =====
>
> I would have called (2), RPL Unaware Leaves, and I would have called (3)
> RPL
> Aware Leaves.
> Pascal calls (1) RPL Unaware Leaves, and (2) are RPL Aware Leaves (I
> think).
> Well, maybe my description is wrong!
>
> Flame away!
>
> --
> ]               Never tell me the odds!                 | ipv6 mesh
> networks [
> ]   Michael Richardson, Sandelman Software Works        | network
> architect  [
> ]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on
> rails    [
>
>
>
>
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--00000000000049320c05957f6c03
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi,</div><div><br></div>Currently the useofrplinfo dr=
aft states:<br><br>=C2=A0 =C2=A0RPL-aware-node: A device which implements R=
PL.=C2=A0 Please note that the<br>=C2=A0 =C2=A0device can be found inside t=
he LLN or outside LLN.<br><br>=C2=A0 =C2=A0&lt;&lt;&lt; This would be the n=
umber 3 of Michael descriptions <br>=C2=A0 =C2=A0Should we extend the defin=
ition to insert 3.A, 3.b, 3.C, 3D descriptions???? &gt;&gt;&gt;&gt;<br><br>=
=C2=A0 =C2=A0RPL-Aware-Leaf(RAL): A RPL-aware-node which is a leaf of a<br>=
=C2=A0 =C2=A0(Destination Oriented Directed Acyclic Graph) DODAG.<br><br>=
=C2=A0 =C2=A0RPL-unaware-node: A device which does not implement RPL, thus =
the<br>=C2=A0 =C2=A0device is not-RPL-aware.=C2=A0 Please note that the dev=
ice can be found<br>=C2=A0 =C2=A0inside the LLN.<br><br>=C2=A0 =C2=A0&lt;&l=
t;&lt; This would be the number 2 of Michael descriptions, <br>=C2=A0 =C2=
=A0I am wondering if we could add the need of RFCs6775, RFC8138 and the oth=
ers that Michael mentioned <br>=C2=A0 =C2=A0into section 9 Operational Cons=
iderations of supporting not-RPL-aware-leaves. &gt;&gt;&gt;&gt;<div><br>=C2=
=A0 =C2=A0RPL-Unaware-Leaf(RUL): A RPL-unaware-node which is a leaf of a<br=
>=C2=A0 =C2=A0(Destination Oriented Directed Acyclic Graph) DODAG.<br><br><=
br><br>=C2=A0 =C2=A06LoWPAN Node (6LN): [RFC6775] defines it as: &quot;A 6L=
oWPAN node is any<br>=C2=A0 =C2=A0host or router participating in a LoWPAN.=
=C2=A0 This term is used when<br>=C2=A0 =C2=A0referring to situations in wh=
ich either a host or router can play the<br>=C2=A0 =C2=A0role described.&qu=
ot;.=C2=A0 In this document, a 6LN acts as a leaf.<br><br>=C2=A0 =C2=A06LoW=
PAN Router (6LR): [RFC6775] defines it as:&quot; An intermediate<br>=C2=A0 =
=C2=A0router in the LoWPAN that is able to send and receive Router<br>=C2=
=A0 =C2=A0Advertisements (RAs) and Router Solicitations (RSs) as well as<br=
>=C2=A0 =C2=A0forward and route IPv6 packets. =C2=A06LoWPAN routers are pre=
sent only in<br>=C2=A0 =C2=A0route-over topologies.&quot;<br><br><br>=C2=A0=
 =C2=A0We would appreciate to know what the WG thinks about this topic?<br>=
<br>=C2=A0 =C2=A0Thank you very much,<br><br>=C2=A0 =C2=A0Ines.<br></div></=
div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On=
 Fri, Oct 11, 2019 at 5:56 PM Michael Richardson &lt;<a href=3D"mailto:mcr%=
2Bietf@sandelman.ca">mcr+ietf@sandelman.ca</a>&gt; wrote:<br></div><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
 solid rgb(204,204,204);padding-left:1ex"><br>
At the virtual interim a few weeks ago, Pascal and I discussed different<br=
>
possible goals for the documents.=C2=A0 Some of the confusion comes down to=
<br>
mis-understandings resulting from the choices of names.<br>
<br>
Let me go through a series of descriptions and connect some terms as I can =
to<br>
them.<br>
<br>
1) Host. It was Carsten who first pointed that things that do not route are=
<br>
=C2=A0 =C2=A0hosts, and RFC8504 says what a host is supposed to do.<br>
=C2=A0 =C2=A0RFC8504 does not say anything about being able to decapsulate =
IP(dst:me)IP(dst:me)<br>
=C2=A0 =C2=A0packets.=C2=A0 I tried to get that in, but 6man was rather hos=
tile to this.<br>
=C2=A0 =C2=A0RFC8504 also says nothing about supporting 6lowpan stuff!<br>
<br>
2) 6lowpan host.<br>
=C2=A0 =C2=A0Everything from (1), plus ability to do<br>
=C2=A0 =C2=A0 =C2=A0 rfc4944: Transmission of IPv6 Packets over IEEE 802.15=
.4 Networks<br>
<br>
=C2=A0 =C2=A0which means doing some amount of header compression.<br>
<br>
=C2=A0 =C2=A0Does it include any of:<br>
<br>
=C2=A0 =C2=A0rfc6775: Neighbor Discovery Optimization for IPv6 over Low-Pow=
er Wireless<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Personal Area Networks (6LoWPANs)=
 <br>
=C2=A0 =C2=A0rfc7400: 6LoWPAN-GHC: Generic Header Compression for IPv6 over=
 Low-Power<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Wireless Personal Area Networks<b=
r>
=C2=A0 =C2=A0rfc8025: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Paging Dispatch<br>
=C2=A0 =C2=A0rfc8066: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN) ESC<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Dispatch Code Points and Guidelin=
es<br>
=C2=A0 =C2=A0rfc8505: Registration Extensions for IPv6 over Low-Power Wirel=
ess Personal<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Area Network (6LoWPAN) Neighbor D=
iscovery<br>
=C2=A0 =C2=A0rfc8138: IPv6 over Low-Power Wireless Personal Area Network (6=
LoWPAN)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Routing Header <br>
<br>
=C2=A0 =C2=A0I have no idea.=C2=A0 If someone says a product does &quot;rfc=
6775&quot;, then 4944 is<br>
=C2=A0 =C2=A0clearly included.=C2=A0 =C2=A0Some of the more recent radios (=
DECT) may have nailed<br>
=C2=A0 =C2=A0down that they need additional things, but I didn&#39;t check.=
<br>
<br>
3) RPL host.<br>
=C2=A0 =C2=A0Pascal and I disagree whether to call this an RPL *AWARE* host=
 (because it<br>
=C2=A0 =C2=A0speaks RPL data plane), or an RPL *UNAWARE* host (because it d=
oes not<br>
=C2=A0 =C2=A0speak 6550).=C2=A0 It being a host, it is by definition a leaf=
.<br>
<br>
=C2=A0 =C2=A0We are we want is a definition which includes:<br>
=C2=A0 =C2=A0A) All the stuff above which we were uncertain about.=C2=A0 Sp=
ecifically, we<br>
=C2=A0 =C2=A0 =C2=A0 really want RFC8505 and RFC6775 to be supported.<br>
=C2=A0 =C2=A0 =C2=A0 Specifically, EARO with the TID.<br>
<br>
=C2=A0 =C2=A0B) We want these devices to ignore RPI and RH3 headers accordi=
ng rfc8200,<br>
=C2=A0 =C2=A0 =C2=A0 as useofrplinfo envisions.<br>
<br>
=C2=A0 =C2=A0C) We want these devices to accept IP(dst:me),headers,IP(dst:m=
e) constructs,<br>
=C2=A0 =C2=A0 =C2=A0 as it simplies the useofrplinfo situation for storing =
mode.=C2=A0 But,<br>
=C2=A0 =C2=A0 =C2=A0 we have some ways to work around this in the 6LR in st=
oring mode, but<br>
=C2=A0 =C2=A0 =C2=A0 it is a spec change.<br>
<br>
=C2=A0 =C2=A0D) Ideally, these hosts would send IPv6 packets with an RPI he=
ader already<br>
=C2=A0 =C2=A0 =C2=A0 inserted.=C2=A0 This eliminates the need to do an IPIP=
 encapsulation at the<br>
=C2=A0 =C2=A0 =C2=A0 first 6LR.<br>
<br>
=C2=A0 =C2=A0A typical example of such a device is a window smash sensor th=
at might be<br>
=C2=A0 =C2=A0part of a (home) security system.=C2=A0 When installed, it mig=
ht be provisioned<br>
=C2=A0 =C2=A0with some cable for power and control.=C2=A0 Then, having sent=
 out an EARO/TID<br>
=C2=A0 =C2=A0to register with the 6LR/6LBR, it goes into a deep sleep, waki=
ng up<br>
=C2=A0 =C2=A0perhaps weekly or monthly.=C2=A0 If the window is smashed, it =
send packets,<br>
=C2=A0 =C2=A0probably until the battery runs dry.=C2=A0 If it is re-used, i=
t is effectively<br>
=C2=A0 =C2=A0refurbished with a new battery and rejoins as if it was a new =
device.<br>
<br>
=C2=A0 =C2=A0There are other examples of sleepy devices which would never b=
e able to<br>
=C2=A0 =C2=A0forward packets.<br>
<br>
4) 6LR with incompatible MOP, or other handicap.<br>
<br>
=C2=A0 =C2=A0Such a device is forced by the rules of 6550 to join the netwo=
rk as a leaf.<br>
=C2=A0 =C2=A0It is unclear to me if it is allowed to send DAOs for itself, =
or if it has<br>
=C2=A0 =C2=A0to use ND like (3) above.=C2=A0 Clearly it listens to DIOs, be=
cause that&#39;s how<br>
=C2=A0 =C2=A0it learnt that it couldn&#39;t join as a router.=C2=A0 The key=
 thing is that it<br>
=C2=A0 =C2=A0does not emit DIOs, and thus never attracts any children.<br>
<br>
=C2=A0 =C2=A0{It is distinguished from a 6LR which just happens to be leaf,=
 because<br>
=C2=A0 =C2=A0there are no children that have picked it as a parent.=C2=A0 S=
uch a 6LR sends<br>
=C2=A0 =C2=A0out peridic DIOs according trickle}<br>
<br>
=3D=3D=3D=3D=3D<br>
<br>
I would have called (2), RPL Unaware Leaves, and I would have called (3) RP=
L<br>
Aware Leaves.<br>
Pascal calls (1) RPL Unaware Leaves, and (2) are RPL Aware Leaves (I think)=
.<br>
Well, maybe my description is wrong!<br>
<br>
Flame away!<br>
<br>
-- <br>
]=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Never tell me the o=
dds!=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| ipv6 me=
sh networks [ <br>
]=C2=A0 =C2=A0Michael Richardson, Sandelman Software Works=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 | network architect=C2=A0 [ <br>
]=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:mcr@sandelman.ca" target=3D"_blank">=
mcr@sandelman.ca</a>=C2=A0 <a href=3D"http://www.sandelman.ca/" rel=3D"nore=
ferrer" target=3D"_blank">http://www.sandelman.ca/</a>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 |=C2=A0 =C2=A0ruby on rails=C2=A0 =C2=A0 [ <br>
<br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Thread-Topic: [Roll] naming and other goals for RPL Unaware Leaves
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Subject: Re: [Roll] naming and other goals for RPL Unaware Leaves
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Date: Tue, 22 Oct 2019 14:36:04 +0000
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References: <29223591-193D-46D5-8EE1-0C93C84FABB6@cisco.com> <657F6717-C1BF-47B9-B5CF-7CC543286ACE@cisco.com> <MN2PR11MB356505C7BD4992374FEA50FCD8680@MN2PR11MB3565.namprd11.prod.outlook.com> <55994E79-0BF7-4ADD-B17F-3FAC01A35196@cisco.com>
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: Rahul Jadhav <nyrahul@outlook.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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--_000_EA4BC700774A45A7AC111ACE69BF2872ciscocom_--


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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Wed, 23 Oct 2019 13:40:44 +0300
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To: roll <roll@ietf.org>
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Subject: [Roll] ROLL Github permissions
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Dear all,

Please let us know your github username if you do not have permission to
push into https://github.com/roll-wg, so we can add you as a member.

Thank you,

Ines and Peter.

--000000000000b7916e0595918efd
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<div dir=3D"ltr">Dear all,=C2=A0<div><br></div><div>Please let us know your=
 github username if you do not have permission to push into <a href=3D"http=
s://github.com/roll-wg">https://github.com/roll-wg</a>, so we can add you a=
s a member.=C2=A0</div><div><br></div><div>Thank you,</div><div><br></div><=
div>Ines and Peter.</div></div>

--000000000000b7916e0595918efd--


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Date: Wed, 23 Oct 2019 14:23:44 +0300
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Subject: [Roll] IETF 106: Call for presentations
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--00000000000082017505959228c4
Content-Type: text/plain; charset="UTF-8"

Dear all,

Following the preliminary agenda, ROLL is scheduled with two meetings of
two hours each.

Please let us know before 4th November if you desire to present a topic
during IETF 106 detailing:

1- Topic
2- Presenter
3- Time needed
4- Specifying if it is remotely or on-site.


Thank you! :-)

roll chairs.

--00000000000082017505959228c4
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<div dir=3D"ltr">Dear all,<div><br></div><div>Following the preliminary age=
nda, ROLL is scheduled with two meetings of two hours each.=C2=A0</div><div=
><br></div><div>Please let us know before 4th November if you desire to pre=
sent a topic during=C2=A0IETF 106 detailing:</div><div><br></div><div>1- To=
pic</div><div>2- Presenter</div><div>3- Time needed=C2=A0</div><div>4- Spec=
ifying if it is remotely or on-site.</div><div></div><div><br></div><div><b=
r></div><div>Thank you! :-)</div><div><br></div><div>roll chairs.=C2=A0</di=
v><div><br></div><div><br></div><div><br></div><div><br></div><div><br></di=
v><div><br></div><div><br></div></div>

--00000000000082017505959228c4--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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On October 21, 2019 at 1:34:54 PM, Pascal Thubert
(pthubert)(pthubert@cisco.com) wrote:

Pascal:

Hi!

> ...
> 434 RPL Status: The RPL Status as defined in section 6.5.1 of [RFC6550].
> 435 Indicative of the reason why the DCO happened, the RPL Status MUST
> 436 NOT be changed as the DCO is propagated down the route being
> 437 invalidated. This value is informative and does not affect the
> 438 behavior of the receiver. In particular, unknown values are ignored
> 439 by the receiver. Only Rejection Codes (values of 128 and above) are
> 440 expected in a DCO.
>
> > [major] rfc6550 defines a field called "Status" (not "RPL Status") for =
the
> > DAO-ACK, which "Indicates the completion", and not "the reason why the =
DCO
> > happened". Also, the value of "130 indicating that the address has move=
d"
> > is not consistent with what seems to be intent in the DAO-ACK: "Rejecti=
on;
> > the node sending the DAO-ACK is unwilling to act as a parent." While th=
e
> > interpretation could be stretched, it seems to me that it would be bett=
er
> > to simply create a new "RPL Status" field/registry that applies
> > specifically to the DCO.
>
> I agree that we are making it a "reason". This is consistent with the
> evolution of the status and its use in RFC 8505, more below.
>
> > From the discussion on the list, it was proposed that a common
> > registry can be defined in draft-ietf-roll-unaware-leaves. Looking at t=
hat
> > draft, and the fact that it defines "RPL Status values for use in DAO-A=
CK
> > and DCO that map the 6LoWPAN ND values defined in Table 1 of [RFC8505]"=
,
> > where 130 is called "Moved", but the definition in rfc8505 refers to a
> > stale registration... IOW, the use of 130 doesn't seem to map well to t=
he
> > definitions in rfc8505. This seems to be another reason to create an
> > independent field/registry.
>
> > Is there a strong reason for the reuse?
>
>
> We have complex flows where the 6LBR proxies the 6LN's registration to th=
e
> 6BBR (https://datatracker.ietf.org/doc/draft-ietf-6lo-backbone-router/) s=
o
> that in turn the 6BBR does ND proxy for the 6LN on the backbone. We use R=
FC
> 8505 between the 6LN and the 6LR, and between the 6LBR and the 6BBR. In c=
ase
> of a bad RC from the 6BBR to the 6LBR, the 6LBR needs to send the informa=
tion
> back to the 6LR so the 6LR returns it to the 6LN using RFC 8505. We use N=
P
> DAO for that and for that reason, yes, we stretch the meaning. As you see=
 the
> point is not to save a registry but to homogenize the RPL and the RFC 850=
5
> status.
>
> See https://tools.ietf.org/html/rfc8505#section-9.4 and
> https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-04#section-12.=
2 : )
>
> When the address moves on the backbone, the RPL state in the old DODAG is
> Cleaned from the 6LBR down. And the status from 6BBR to 6LBR is moved so =
the
> expectation is that it percolates down. The rejection is mostly to cleanu=
p
> RPL since the leaf is expected to be long gone and registered in a differ=
ent
> DODAG across the backbone.

I think I understand -- homogenizing is not a bad thing. :-)

However, I am still concerned about a couple of things:

(1) the values are not the same...for example, "moved" in rfc8505 has
a value of 3, not 130. =C2=A0Why not use the same value? =C2=A0The answer t=
o
this question overflows into my second concern...

(2) draft-ietf-roll-unaware-leaves doesn't update the allocation
guidelines from rfc6550 (=C2=A76.5.1) for the Status, which then lands
"moved" in the "Rejection" range. =C2=A0IOW, the meaning is changed, but
the original meaning of the DAO-ACK Status is not updated...

[We are not reviewing draft-ietf-roll-unaware-leaves here, so some of
these comments can be saved for later. ;-)]

Needless to say, I don't like this approach. =C2=A0But if the WG wants to
go forward this way, then I want to make this document Normatively
depend on draft-ietf-roll-unaware-leaves because that is where the
registry and meaning for the Status values are defined. =C2=A0I also think
that because of that, we will want to hold sending this document back
to the RFC Editor until we get the final text for
draft-ietf-roll-unaware-leaves (and decide that we don't need
additional review for this document).


One more thing, in reading through rfc8505, I found this text (which I
had completely missed before):

=C2=A0 =C2=A0If the receiver of the message has registration state correspo=
nding
to the related address, it SHOULD propagate the status down the
forwarding path to the Registered Node (e.g., reversing an existing
RPL [RFC6550] path as prescribed in [Efficient-NPDAO]).

So...if the rfc8505 status is "moved" (which is actually the topic of
the paragraph from where the text above was taken in =C2=A75.7), what
should be propagated using the DCO? =C2=A0130? =C2=A0Where is that specifie=
d?



> > [major] "the RPL Status MUST NOT be changed...is informative and does n=
ot
> > affect the behavior of the receiver...unknown values are ignored...Only
> > Rejection Codes (values of 128 and above) are expected in a DCO."
> >
> > If the value doesn't matter (informative) and unknown ones are ignored,=
 why
> > specify that it MUST NOT change? What is the Normative value of that?
> > Specifically, if the value was changed to something < 128, what should =
the
> > receiver do?
>
> We wish the information to be known by all nodes, and this is a provision
> that we can reliably act differently per status value all the along the D=
ODAG
> in the future. So we see this as protecting the future. Is that a problem=
?

Sorry...let me try again. =C2=A0I see two problems:

(1) The values are informative, but Normatively are not to change.
How can the "MUST NOT" be enforced in the network? =C2=A0How would a
receiver know if the value was changed (or not)? =C2=A0You added that "we
can reliably act differently per status value" (but the text currently
reads: "value is informative and does not affect the behavior of the
receiver") -- having a consistent/reliable behavior can be achieved
only if it can be guaranteed that the value didn't change. =C2=A0If it did
change, what is the expected behavior?

(2) If only values > 128 are expected, then what should a receiver do
if a value < 128 is received? =C2=A0Should the DCO not be propagated
further?


> > ...
> 574 4.5. Unsolicited DCO
>
> 576 A 6LR may generate an unsolicited DCO to unilaterally cleanup the
> 577 path on behalf of the target entry. The 6LR has all the state
> 578 information, namely, the Target address and the Path Sequence,
> 579 required for generating DCO in its routing table. The conditions why
> 580 6LR may generate an unsolicited DCO are beyond the scope of this
> 581 document but some possible reasons could be:
>
> 583 1. On route expiry of an entry, a 6LR may decide to graciously
> 584 cleanup the entry by initiating DCO.
> 585 2. 6LR needs to entertain higher priority entries in case the
> 586 routing table is full, thus resulting in eviction of an existing
> 587 routing entry. In this case the eviction can be handled
> 588 graciously using DCO.
>
> 590 Note that if the 6LR initiates a unilateral path cleanup using DCO
> 591 and if it has the latest state for the target then the DCO would
> 592 finally reach the target node. Thus the target node would be
> 593 informed of its invalidation.
>
> > [] This section wasn't changed, but it seems to me that there's an
> > opportunity to indicate these known reasons as Status in the DCO. =C2=
=A0Among
> > other things, the target node would be able to identify the reason for =
the
> > unsolicited DCO...
>
> Agreed, let's look at this.

Perfect!

Thanks!

Alvaro.


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Subject: [Roll] Making RUL draft normative reference in useofrplinfo
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Dear all,

Discussing with Pascal and Michael, we would like to know if you think that
unaware-leaves draft should be normative in useofrplinfo.

Please find below some discussion points:

The RUL draft introduces a new beast to the RPL family, a
=E2=80=9CLeaf-that-does-not-speak-RFC-6550=E2=80=9C but can now attach to t=
he network and
benefit from special forwarding rules, provided that it implements the RUL
draft and some dependencies listed therein. Use-Of-RPL-Info aligned to the
WIP but there=E2=80=99s still a risk if it is published too soon that it is=
 not
100% aligned. The misalignment we noted is mostly a terminology thing: is a
RUL a =E2=80=9CLeaf-that-does-not-speak-RFC-6550=E2=80=9C, or should we car=
ry additional
meaning like support of the RUL draft and/or the dependencies.



The behavior for a RUL in Use-Of-RPL-Info world for the is correct but it
could apply to a slightly wider definition of a RUL than what the RUL draft
considers. E.g., a node that 1) does not implement the RUL draft and even
RFC 8505, but 2) never moves (tethered to the router or embedded therein),
could also attach to a RPL network provided that the router does a new set
of things, like handles the sequence counter and  stuff, and there could be
tons of variations of that guy e.g.,  whether that guy could provide an
=E2=80=9Copaque=E2=80=9D RPL-aware RPLinstanceID though it does not speak R=
FC 6550. The
description of the operation of a RUL in Use-Of-RPL-Info would work for
that guy as well, but that operation is not defined. IOW that guy is does
not (yet) belong to the RPL family, and will hopefully never do, because
the original 6LoWPAN ND is obsoleted by RFC 8505, so why not just do that?



To maximize the coverage of Use-Of-RPL-Info, we should need to include that
guy in the generic =E2=80=9CRUL=E2=80=9D definition. I=E2=80=99m not too in=
terested in defining all
the variations of =E2=80=9Cthat guy=E2=80=9D and even less to give a name t=
o all the
variations, and/or ensure that it could be doable to do RPL on their behalf
based on new hypothetic features in the router. Personally I=E2=80=99m happ=
y enough
if the RUL that the Use-Of-RPL-Info describes has a scope that is reduced
to nodes that obey the RUL draft, because they are the only ones for which
we have a defined behavior in the router. Thus the proposal to make the RUL
draft a normative reference and live a few months with a missref.



Changes were done in the RUL draft to ensure that the operation described
for a RUL in Use-Of-RPL-Info is compatible with the new beast that the RUL
draft considers, making the new beast a subset of the RUL considered by
Use-Of-RPL-Info. Because when the doc became WG doc a RUL was any sort of
external route. the doc made it more specific. The price to pay was to
introduce a different behavior for the RUL and other =E2=80=9Cexternal
destinations=E2=80=9D. As the text was changed for other =E2=80=9Cexternal =
destinations=E2=80=9D
indicating e.g., the need to route via the parent and thus to use
Non-Storing signaling.



Then that text was stripped off the RUL draft and placed it in the
Use-Of-RPL-Info because it was really text on the forwarding behavior,
which is different if some assumptions cannot be made on the external
destination (need to encaps to the parent when it is not necessarily needed
for a RUL). That new text also fills a gap in Use-Of-RPL-Info and is
completely localized in a  new section. the  text was moved about routing
from the RUL draft to that section. Since it is not published yet, please
find that text inline below:



=E2=80=9C



4.1. Updates to RFC6550: Advertise External Routes with Non-Storing

Mode Signaling.

Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to

indicate that the 6LR that generates the DAO redistributes external

targets into the RPL network. An external Target is a Target that

has been learned through an alternate protocol, for instance a route

to a prefix that is outside the RPL domain but reachable via a 6LR.

Being outside of the RPL domain, a node that is reached via an

external target cannot be guaranteed to ignore the RPL artifacts and

cannot be expected to process the [RFC8138] compression correctly.

This means that the RPL artifacts should be contained in an IP-in-IP

encapsulation that is removed by the 6LR, and that any remaining

compression should be expanded by the 6LR before it forwards a packet

outside the RPL domain.

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode signaling even in a

Storing-Mode network. This way, all packets to an external target

reach the Root that can encapsulate them, and the Root is informed of

the address of the 6LR that terminates the IP-in-IP tunnel. In case

of an external target, the Root SHOULD use the same IP-in-IP

encapsulation for packets that it generates or that are originated

within the RPL domain as if the packets were coming from the

Internet.

A RUL is a special case of external target when the target is

actually a host and it is known to support a consumed Routing Header

and to ignore a HbH header as prescribed by [RFC8200]. The target

may have been learned through as a host route or may have been

registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be

avoided for Root to RUL communication if the RUL is known to process

the packets as forwarded by the parent 6LR without decapsulation.

In order to enable IP-in-IP all the way to a 6LN, it is beneficial

that the 6LN supports decapsulating IP-in-IP, but that is not assumed

by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a

packet SHOULD terminate the tunnel at a parent 6LR unless it is aware

that the RUL supports IP-in-IP decapsulation.

A node that is reachable over an external route is not expected to

support [RFC8138]. Whether a decapsulation took place or not and

even when the 6LR is delivering the packet to a RUL, the 6LR that

injected an external route MUST uncompress the packet before

forwarding over that external route.

=E2=80=9C



So where are we?



We need to agree on what we place in the definition of a RUL for which
Use-Of-RPL-Info
presents a special behavior. Do we limit to the ground common with the RUL
draft for which there is a defined RPL behavior, or do we define a new
different thing where Use-Of-RPL-Info handles an unclear superset of the
nodes that support the RUL draft and for which there is a defined RPL
operation? I do not see the need because if (ever, though doubtful) a new
draft defines the RPL operation for one version of =E2=80=9Cthat guy=E2=80=
=9D then is can
also say whether =E2=80=9Cthat guy=E2=80=9D should be handled as a RUL or a=
s an =E2=80=9Cexternal
destination=E2=80=9D in Use-Of-RPL-Info.



Thus the proposal to that that the operation of a =E2=80=9CRUL=E2=80=9D in =
Use-Of-RPL-Info
is for a node that supports the RUL draft, and make the RUL draft a
normative reference to define what that exactly mean. If we do so, MISSREF
will play its guardian role to ensure that Use-Of-RPL-Info is consistent
with the RUL draft till the last minute because it is not published too
hastly.


Looking forward to your reactions,


Ines, Pascal and Michael.

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<div dir=3D"ltr">Dear all,<div><br></div><div>Discussing with Pascal and Mi=
chael, we would like to know if you think that unaware-leaves draft should =
be normative in useofrplinfo.</div><div><br></div><div>Please find below so=
me discussion points:=C2=A0</div><div><br></div><div><p class=3D"MsoNormal"=
><span lang=3D"EN-US">The RUL draft introduces a new beast to the RPL famil=
y, a =E2=80=9CLeaf-that-does-not-speak-RFC-6550=E2=80=9C but can now attach=
 to the network and benefit from special forwarding rules, provided that it=
 implements the RUL draft and some dependencies listed therein. Use-Of-RPL-=
Info aligned to the WIP but there=E2=80=99s still a risk if it is published=
 too soon that it is not 100% aligned. The misalignment we noted is mostly =
a terminology thing: is a RUL a =E2=80=9CLeaf-that-does-not-speak-RFC-6550=
=E2=80=9C, or should we carry additional meaning like support of the RUL dr=
aft and/or the dependencies.<u></u><u></u></span></p><p class=3D"MsoNormal"=
><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"=
><span lang=3D"EN-US">The behavior for a RUL in Use-Of-RPL-Info world for t=
he is correct but it could apply to a slightly wider definition of a RUL th=
an what the RUL draft considers. E.g., a node that 1) does not implement th=
e RUL draft and even RFC 8505, but 2) never moves (tethered to the router o=
r embedded therein), could also attach to a RPL network provided that the r=
outer does a new set of things, like handles the sequence counter and =C2=
=A0stuff, and there could be tons of variations of that guy e.g., =C2=A0whe=
ther that guy could provide an =E2=80=9Copaque=E2=80=9D RPL-aware RPLinstan=
ceID though it does not speak RFC 6550. The description of the operation of=
 a RUL in Use-Of-RPL-Info would work for that guy as well, but that operati=
on is not defined. IOW that guy is does not (yet) belong to the RPL family,=
 and will hopefully never do, because the original 6LoWPAN ND is obsoleted =
by RFC 8505, so why not just do that?<u></u><u></u></span></p><p class=3D"M=
soNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"M=
soNormal"><span lang=3D"EN-US">To maximize the coverage of Use-Of-RPL-Info,=
 we should need to include that guy in the generic =E2=80=9CRUL=E2=80=9D de=
finition. I=E2=80=99m not too interested in defining all the variations of =
=E2=80=9Cthat guy=E2=80=9D and even less to give a name to all the variatio=
ns, and/or ensure that it could be doable to do RPL on their behalf based o=
n new hypothetic features in the router. Personally I=E2=80=99m happy enoug=
h if the RUL that the Use-Of-RPL-Info describes has a scope that is reduced=
 to nodes that obey the RUL draft, because they are the only ones for which=
 we have a defined behavior in the router. Thus the proposal to make the RU=
L draft a normative reference and live a few months with a missref.<u></u><=
u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<=
u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Changes were d=
one in the RUL draft to ensure that the operation described for a RUL in Us=
e-Of-RPL-Info is compatible with the new beast that the RUL draft considers=
, making the new beast a subset of the RUL considered by Use-Of-RPL-Info. B=
ecause when the doc became WG doc a RUL was any sort of external route. the=
 doc made it more specific. The price to pay was to introduce a different b=
ehavior for the RUL and other =E2=80=9Cexternal destinations=E2=80=9D. As t=
he text was changed for other =E2=80=9Cexternal destinations=E2=80=9D indic=
ating e.g., the need to route via the parent and thus to use Non-Storing si=
gnaling.<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US=
"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US=
">Then that text was stripped off the RUL draft and placed it in the Use-Of=
-RPL-Info because it was really text on the forwarding behavior, which is d=
ifferent if some assumptions cannot be made on the external destination (ne=
ed to encaps to the parent when it is not necessarily needed for a RUL). Th=
at new text also fills a gap in Use-Of-RPL-Info and is completely localized=
 in a=C2=A0 new section. the=C2=A0 text was moved about routing from the RU=
L draft to that section. Since it is not published yet, please find that te=
xt inline below:<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">=E2=80=9C<u></u><u></u></span></p><p class=3D"MsoNormal"><span l=
ang=3D"EN-US" style=3D"font-size:10pt"><u></u>=C2=A0<u></u></span></p><tabl=
e border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p=
 class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fami=
ly:&quot;Courier New&quot;">4.1. Updates to RFC6550: Advertise External Rou=
tes with Non-Storing<u></u><u></u></span></p></td></tr><tr><td style=3D"pad=
ding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table bo=
rder=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p cla=
ss=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Courier Ne=
w&quot;">Mode Signaling.<u></u><u></u></span></p></td></tr><tr><td style=3D=
"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><tabl=
e border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"></=
td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=
=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td sty=
le=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"=
font-size:10pt;font-family:&quot;Courier New&quot;">Section 6.7.8. of [RFC6=
550] introduces the &#39;E&#39; flag that is set to<u></u><u></u></span></p=
></td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p cl=
ass=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td =
style=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=
=3D"font-size:10pt;font-family:&quot;Courier New&quot;">indicate that the 6=
LR that generates the DAO redistributes external<u></u><u></u></span></p></=
td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=
=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td sty=
le=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"=
font-size:10pt;font-family:&quot;Courier New&quot;">targets into the RPL ne=
twork. An external Target is a Target that<u></u><u></u></span></p></td></t=
r><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"Ms=
oNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"=
padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-s=
ize:10pt;font-family:&quot;Courier New&quot;">has been learned through an a=
lternate protocol, for instance a route<u></u><u></u></span></p></td></tr><=
tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNo=
rmal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"pad=
ding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size=
:10pt;font-family:&quot;Courier New&quot;">to a prefix that is outside the =
RPL domain but reachable via a 6LR.<u></u><u></u></span></p></td></tr><tr><=
td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal=
"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding=
:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10p=
t;font-family:&quot;Courier New&quot;">Being outside of the RPL domain, a n=
ode that is reached via an<u></u><u></u></span></p></td></tr><tr><td style=
=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><t=
able border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"=
><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-f=
amily:&quot;Courier New&quot;">external target cannot be guaranteed to igno=
re the RPL artifacts and<u></u><u></u></span></p></td></tr><tr><td style=3D=
"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><tabl=
e border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p=
 class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fami=
ly:&quot;Courier New&quot;">cannot be expected to process the [RFC8138] com=
pression correctly.<u></u><u></u></span></p></td></tr><tr><td style=3D"padd=
ing:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table bor=
der=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p clas=
s=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&q=
uot;Courier New&quot;">This means that the RPL artifacts should be containe=
d in an IP-in-IP<u></u><u></u></span></p></td></tr><tr><td style=3D"padding=
:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=
=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">encapsulation that is removed by the 6LR, and that an=
y remaining<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75=
pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0=
" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"Mso=
Normal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;">compression should be expanded by the 6LR before it forwards=
 a packet<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt=
"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" =
cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNo=
rmal"><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">ou=
tside the RPL domain.<u></u><u></u></span></p></td></tr><tr><td style=3D"pa=
dding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table b=
order=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"></td>=
</tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D=
"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=
=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"fo=
nt-size:10pt;font-family:&quot;Courier New&quot;">This specification update=
s RPL [RFC6550] to RECOMMEND that external<u></u><u></u></span></p></td></t=
r><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"Ms=
oNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"=
padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-s=
ize:10pt;font-family:&quot;Courier New&quot;">targets are advertised using =
Non-Storing Mode signaling even in a<u></u><u></u></span></p></td></tr><tr>=
<td style=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNorma=
l"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"paddin=
g:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10=
pt;font-family:&quot;Courier New&quot;">Storing-Mode network. This way, all=
 packets to an external target<u></u><u></u></span></p></td></tr><tr><td st=
yle=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p=
><table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75=
pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;fon=
t-family:&quot;Courier New&quot;">reach the Root that can encapsulate them,=
 and the Root is informed of<u></u><u></u></span></p></td></tr><tr><td styl=
e=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><=
table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt=
"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-=
family:&quot;Courier New&quot;">the address of the 6LR that terminates the =
IP-in-IP tunnel.=C2=A0</span><span style=3D"font-size:10pt;font-family:&quo=
t;Courier New&quot;">In case<u></u><u></u></span></p></td></tr><tr><td styl=
e=3D"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><=
table border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt=
"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-=
family:&quot;Courier New&quot;">of an external target, the Root SHOULD use =
the same IP-in-IP<u></u><u></u></span></p></td></tr><tr><td style=3D"paddin=
g:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table borde=
r=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">encapsulation for packets that it generates or that a=
re originated<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.=
75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D=
"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"M=
soNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Co=
urier New&quot;">within the RPL domain as if the packets were coming from t=
he<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td>=
</tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpad=
ding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNormal"><=
span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Internet.=
<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td></=
tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpaddi=
ng=3D"0"><tbody><tr><td style=3D"padding:0.75pt"></td></tr><tr><td style=3D=
"padding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><tabl=
e border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p=
 class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fami=
ly:&quot;Courier New&quot;">A RUL is a special case of external target when=
 the target is<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0=
.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=
=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">actually a host and it is known to support a consumed=
 Routing Header<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:=
0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=
=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">and to ignore a HbH header as prescribed by [RFC8200]=
.=C2=A0</span><span style=3D"font-size:10pt;font-family:&quot;Courier New&q=
uot;">The target<u></u><u></u></span></p></td></tr><tr><td style=3D"padding=
:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=
=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">may have been learned through as a host route or may =
have been<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt=
"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" =
cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNo=
rmal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courie=
r New&quot;">registered to the 6LR using [RFC8505]. IP-in-IP encapsulation =
MAY be<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"><=
/td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cel=
lpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNorma=
l"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">avoided for Root to RUL communication if the RUL is known to proc=
ess<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td=
></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpa=
dding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNormal">=
<span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier New&=
quot;">the packets as forwarded by the parent 6LR without decapsulation.<u>=
</u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td></tr>=
</tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpadding=
=3D"0"><tbody><tr><td style=3D"padding:0.75pt"></td></tr><tr><td style=3D"p=
adding:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table =
border=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p c=
lass=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family=
:&quot;Courier New&quot;">In order to enable IP-in-IP all the way to a 6LN,=
 it is beneficial<u></u><u></u></span></p></td></tr><tr><td style=3D"paddin=
g:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table borde=
r=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">that the 6LN supports decapsulating IP-in-IP, but tha=
t is not assumed<u></u><u></u></span></p></td></tr><tr><td style=3D"padding=
:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=
=3D"0" cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=
=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&qu=
ot;Courier New&quot;">by [RFC8504]. If the 6LN is a RUL, the Root that enca=
psulates a<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75p=
t"></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0"=
 cellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoN=
ormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Couri=
er New&quot;">packet SHOULD terminate the tunnel at a parent 6LR unless it =
is aware<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"=
></td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" c=
ellpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNor=
mal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier=
 New&quot;">that the RUL supports IP-in-IP decapsulation.<u></u><u></u></sp=
an></p></td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table=
><p class=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><t=
r><td style=3D"padding:0.75pt"></td></tr><tr><td style=3D"padding:0.75pt"><=
/td></tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cel=
lpadding=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNorma=
l"><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">A node that is reachable over an external route is not expected t=
o<u></u><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td><=
/tr></tbody></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpadd=
ing=3D"0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNormal"><s=
pan lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier New&qu=
ot;">support [RFC8138]. Whether a decapsulation took place or not and<u></u=
><u></u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td></tr></t=
body></table><p class=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"=
0"><tbody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lan=
g=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">ev=
en when the 6LR is delivering the packet to a RUL, the 6LR that<u></u><u></=
u></span></p></td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody><=
/table><p class=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tb=
ody><tr><td style=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"E=
N-US" style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">injected=
 an external route MUST uncompress the packet before<u></u><u></u></span></=
p></td></tr><tr><td style=3D"padding:0.75pt"></td></tr></tbody></table><p c=
lass=3D"MsoNormal"></p><table border=3D"0" cellpadding=3D"0"><tbody><tr><td=
 style=3D"padding:0.75pt"><p class=3D"MsoNormal"><span lang=3D"EN-US" style=
=3D"font-size:10pt;font-family:&quot;Courier New&quot;">forwarding over tha=
t external route.<u></u><u></u></span></p></td></tr><tr><td style=3D"paddin=
g:0.75pt"></td></tr></tbody></table><p class=3D"MsoNormal"><span lang=3D"EN=
-US">=E2=80=9C<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D=
"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D=
"EN-US">So where are we?<u></u><u></u></span></p><p class=3D"MsoNormal"><sp=
an lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><sp=
an lang=3D"EN-US">We need to agree on what we place in the definition of a =
RUL for which=C2=A0</span><span lang=3D"EN-US">Use-Of-RPL-Info presents a s=
pecial behavior. Do we limit to the ground common with the RUL draft for wh=
ich there is a defined RPL behavior, or do we define a new different thing =
where Use-Of-RPL-Info handles an unclear superset of the nodes that support=
 the RUL draft and for which there is a defined RPL operation? I do not see=
 the need because if (ever, though doubtful) a new draft defines the RPL op=
eration for one version of =E2=80=9Cthat guy=E2=80=9D then is can also say =
whether =E2=80=9Cthat guy=E2=80=9D should be handled as a RUL or as an =E2=
=80=9Cexternal destination=E2=80=9D</span><span lang=3D"EN-US">=C2=A0in=C2=
=A0</span><span lang=3D"EN-US">Use-Of-RPL-Info.<u></u><u></u></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US">Thus the proposal to that that the=
 operation of a =E2=80=9CRUL=E2=80=9D in Use-Of-RPL-Info is for a node that=
 supports the RUL draft, and make the RUL draft a normative reference to de=
fine what that exactly mean. If we do so, MISSREF will play its guardian ro=
le to ensure that Use-Of-RPL-Info is consistent with the RUL draft till the=
 last minute because it is not published too hastly.<u></u><u></u></span></=
p><p class=3D"MsoNormal"><span lang=3D"EN-US"><br></span></p><p class=3D"Ms=
oNormal"><span lang=3D"EN-US">Looking forward to your reactions,</span></p>=
<p class=3D"MsoNormal"><span lang=3D"EN-US"><br></span></p><p class=3D"MsoN=
ormal"><span lang=3D"EN-US">Ines, Pascal and Michael.</span></p><p class=3D=
"MsoNormal"><span lang=3D"EN-US"><br></span></p><p class=3D"MsoNormal"><spa=
n lang=3D"EN-US"><br></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US"=
><u></u>=C2=A0</span></p></div><div><br></div><div><br></div></div>

--000000000000c0196f0595ba50b5--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Date: Fri, 25 Oct 2019 13:17:37 +0000
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
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Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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From nobody Fri Oct 25 14:21:56 2019
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Subject: [Roll] roll - Requested sessions have been scheduled for IETF 106
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Dear Ines Robles,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 


    roll Session 1 (2:00 requested)
    Monday, 18 November 2019, Afternoon Session II 1550-1750
    Room Name: Orchard size: 50
    ---------------------------------------------
    roll Session 2 (2:00 requested)
    Tuesday, 19 November 2019, Morning Session I 1000-1200
    Room Name: Olivia size: 150
    ---------------------------------------------


iCalendar: https://datatracker.ietf.org/meeting/106/sessions/roll.ics

Request Information:


---------------------------------------------------------
Working Group Name: Routing Over Low power and Lossy networks
Area Name: Routing Area
Session Requester: Ines Robles

Number of Sessions: 2
Length of Session(s):  2 Hours, 2 Hours
Number of Attendees: 50
Conflicts to Avoid: 
 Chair Conflict: anima manet 6tisch core ace
 Technology Overlap: rtgarea 6lo 6man lwig cbor t2trg
 Key Participant Conflict: rtgwg intarea lpwan


People who must be present:
  Michael Richardson
  Peter van der Stok
  Alvaro Retana
  Ines Robles

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Fri Oct 25 14:40:37 2019
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Subject: [Roll] Constrained Node/Network Cluster @ IETF106: FINAL AGENDA
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Here is my usual eclectic condensed agenda based on the FINAL AGENDA
for IETF106.  Remember that, occasionally, futher agenda changes do
happen.

Quite a bit has been moved around from the draft agenda.
LAKE no longer conflicts with SUIT, TMRID is now on top of ROLL and
TEEP which is maybe a bit less of a problem for most.
ACE/RATS still conflict (and the other RATS meeting has moved from
Monday to Friday on top of COINRG, but you can do this RATS thing
without me, can you?).
WPACK no longer conflicts with COSE (but now does with LAKE, which
again probably just is a personal problem), LAKE/ANIMA is a technology
and a potential user again.

All times are SGT (Singapore Time) =3D=3D UTC + 8 hours (=3D=3D China =
time).
Singapore doesn't obey the daylight savings myth.
(Pure UTC times at https://datatracker.ietf.org/meeting/agenda-utc are
useful for those who want to listen from remote.)

Gr=C3=BC=C3=9Fe, Carsten

FRIDAY, November 15, 2019
-- T2TRG/W3C WoT Workshop @ NUSS (https://is.gd/XWSfi8)

SATURDAY, November 16, 2019
0830-2200  IETF Hackathon - Moor/Morrison

SUNDAY, November 17, 2019
0830-1600  IETF Hackathon - Moor/Morrison
1700-1900  Welcome Reception - Fairmont Ballroom Foyer
1800-2000  Hot RFC Lightning Talks -- Padang

MONDAY, November 18, 2019

1000-1200  Morning Session I
Sophia  	ART	dispatch	Dispatch WG - Joint with ARTAREA
Olivia  	IRTF	icnrg	Information-Centric Networking
Collyer 	SEC	mathmesh	MatheMatical Mesh BOF

1330-1530  Afternoon Session I
VIP A   	INT	dnssd	Extensions for Scalable DNS Service =
Discovery WG - Joint with HOMENET
VIP A   	INT	homenet	Home Networking WG - Joint with DNSSD
Olivia  	IRTF***	dinrg	Decentralized Internet Infrastructure
Canning 	IRTF	pearg	Privacy Enhancements and Assessments =
Research Group
Padang  	SEC	txauth	Transactional Authorization and =
Delegation BOF
Sophia  	TSV	tsvwg	Transport Area Working Group WG

1550-1750  Afternoon Session II
Canning 	ART	httpbis	Hypertext Transfer Protocol WG
Padang  	IRTF	irtfopen	IRTF Open Meeting
Collyer 	OPS	v6ops	IPv6 Operations WG
Orchard 	RTG ***	roll	Routing Over Low power and Lossy =
networks WG

1810-1910  Afternoon Session III
Olivia  	INT ***	lwig	Light-Weight Implementation Guidance WG
Padang  	IRTF	maprg	Measurement and Analysis for Protocols

TUESDAY, November 19, 2019

1000-1200  Morning Session I
VIP A   	INT	tmrid	Trustworthy Multipurpose Remote ID BOF
Olivia  	RTG ***	roll	Routing Over Low power and Lossy =
networks WG
Sophia  	SEC ***	teep	Trusted Execution Environment =
Provisioning WG
Padang  	TSV	quic	QUIC WG

1330-1500  Afternoon Session I
Padang  	ART	abcd	Application Behavior Considering DNS BOF
VIP A   	RTG	babel	Babel routing protocol WG
Sophia  	SEC ***	suit	Software Updates for Internet of Things =
WG
Hullet  	TSV	rmcat	RTP Media Congestion Avoidance =
Techniques WG

1520-1650  Afternoon Session II
Sophia  	GEN	git	GitHub Integration and Tooling WG
Collyer 	INT ***	lpwan	IPv6 over Low Power Wide-Area Networks =
WG
Olivia  	SEC ***	ace	Authentication and Authorization for =
Constrained Environments WG
VIP A   	SEC ***	rats	Remote ATtestation ProcedureS WG
Hullet  	TSV	taps	Transport Services WG

1710-1840  Afternoon Session III
Hullet  	IRTF	qirg	Quantum Internet Proposed Research Group
Sophia  	OPS	anima	Autonomic Networking Integrated Model =
and Approach WG
Padang  	SEC	secdispatch	Security Dispatch WG

WEDNESDAY, November 20, 2019

1000-1200  Morning Session I
Sophia  	ART ***	core	Constrained RESTful Environments WG
Canning 	RTG	raw	Reliable and Available Wireless BOF
Olivia  	SEC ***	teep	Trusted Execution Environment =
Provisioning WG
Padang  	TSV	quic	QUIC WG

1330-1500  Afternoon Session I
Collyer 	ART	webtrans	WebTransport BOF
Sophia  	INT ***	6lo	IPv6 over Networks of =
Resource-constrained Nodes WG
Canning 	IRTF	cfrg	Crypto Forum
Olivia  	SEC	oauth	Web Authorization Protocol WG

1520-1650  Afternoon Session II
Collyer 	ART	wpack	Web Packaging BOF
Hullet  	OPS	anima	Autonomic Networking Integrated Model =
and Approach WG
Sophia  	SEC ***	lake	Lightweight Authenticated Key Exchange =
WG

1710-1940  IETF Plenary - Canning/Padang

THURSDAY, November 21, 2019

1000-1200  Morning Session I
Sophia  	IRTF***	t2trg	Thing-to-Thing
Orchard 	RTG	bier	Bit Indexed Explicit Replication WG
Padang  	SEC	tls	Transport Layer Security WG
Canning 	TSV	tsvwg	Transport Area Working Group WG

1330-1530  Afternoon Session I
Collyer 	ART	httpbis	Hypertext Transfer Protocol WG
Sophia  	INT	6man	IPv6 Maintenance WG
Olivia  	RTG	rift	Routing In Fat Trees WG
Canning 	SEC	saag	Security Area Open Meeting

1550-1720  Afternoon Session II
Padang  	INT	intarea	Internet Area Working Group WG
Collyer 	RTG	detnet	Deterministic Networking WG
Sophia  	SEC ***	cose	CBOR Object Signing and Encryption WG
Hullet  	SEC	oauth	Web Authorization Protocol WG

1740-1840  Afternoon Session III
Hullet  	ART ***	cbor	Concise Binary Object Representation =
Maintenance and Extensions WG
Sophia  	INT	6man	IPv6 Maintenance WG
Collyer 	RTG	detnet	Deterministic Networking WG
Canning 	SEC	tls	Transport Layer Security WG
Padang  	TSV	tsvarea	Transport Area Open Meeting

FRIDAY, November 22, 2019

1000-1200  Morning Session I
Hullet  	INT ***	6tisch	IPv6 over the TSCH mode of IEEE =
802.15.4e WG
Sophia  	IRTF	coinrg	Computing in the Network Proposed =
Research Group
Canning 	SEC	mls	Messaging Layer Security WG
Orchard 	SEC ***	rats	Remote ATtestation ProcedureS WG

1220-1350  Morning Session II
Hullet  	ART ***	core	Constrained RESTful Environments WG
Sophia  	IRTF	panrg	Path Aware Networking RG
Olivia  	SEC	acme	Automated Certificate Management =
Environment WG



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From: "Li Zhao (liz3)" <liz3@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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Subject: Re: [Roll] FW: New Version Notification for draft-thubert-roll-eliding-dio-information-01.txt
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From: Rahul Jadhav <nyrahul@outlook.com>
To: roll <roll@ietf.org>
CC: Michael Richardson <mcr+ietf@sandelman.ca>
Thread-Topic: [Roll] Making RUL draft normative reference in useofrplinfo
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Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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Thank you for clarifying the thoughts in the mail. I am sure I would not ha=
ve caught a drift if this would have been talked about directly (without a =
mail) during the 106-session.

Specifically, I want to talk about the following text:

"

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode signaling even in a

Storing-Mode network. This way, all packets to an external target

reach the Root that can encapsulate them, and the Root is informed of

the address of the 6LR that terminates the IP-in-IP tunnel.

"
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h the external target is attaching) handle the external target in non-stori=
ng mode.
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching. The text opens u=
p a lot of room for interpretations and uncovered-scenarios. I am apprehens=
ive of adding such text to useofrplinfo.

Regarding following, "Do we limit to the ground common with the RUL draft f=
or which there is a defined RPL behavior, or do we define a new different t=
hing where Use-Of-RPL-Info handles an unclear superset of the nodes that su=
pport the RUL draft and for which there is a defined RPL operation? "

I certainly feel that we should limit the ground common for which there is =
a defined RPL behavior.

In general, unaware-leaves seem to have a much broader impact than I initia=
lly thought.

Regards,
Rahul


________________________________
Then that text was stripped off the RUL draft and placed it in the Use-Of-R=
PL-Info because it was really text on the forwarding behavior, which is dif=
ferent if some assumptions cannot be made on the external destination (need=
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a  new section. the  text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet, please find that text inline be=
low:



=93



4.1. Updates to RFC6550: Advertise External Routes with Non-Storing

Mode Signaling.

Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to

indicate that the 6LR that generates the DAO redistributes external

targets into the RPL network. An external Target is a Target that

has been learned through an alternate protocol, for instance a route

to a prefix that is outside the RPL domain but reachable via a 6LR.

Being outside of the RPL domain, a node that is reached via an

external target cannot be guaranteed to ignore the RPL artifacts and

cannot be expected to process the [RFC8138] compression correctly.

This means that the RPL artifacts should be contained in an IP-in-IP

encapsulation that is removed by the 6LR, and that any remaining

compression should be expanded by the 6LR before it forwards a packet

outside the RPL domain.

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode signaling even in a

Storing-Mode network. This way, all packets to an external target

reach the Root that can encapsulate them, and the Root is informed of

the address of the 6LR that terminates the IP-in-IP tunnel. In case

of an external target, the Root SHOULD use the same IP-in-IP

encapsulation for packets that it generates or that are originated

within the RPL domain as if the packets were coming from the

Internet.

A RUL is a special case of external target when the target is

actually a host and it is known to support a consumed Routing Header

and to ignore a HbH header as prescribed by [RFC8200].. The target

may have been learned through as a host route or may have been

registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be

avoided for Root to RUL communication if the RUL is known to process

the packets as forwarded by the parent 6LR without decapsulation.

In order to enable IP-in-IP all the way to a 6LN, it is beneficial

that the 6LN supports decapsulating IP-in-IP, but that is not assumed

by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a

packet SHOULD terminate the tunnel at a parent 6LR unless it is aware

that the RUL supports IP-in-IP decapsulation.

A node that is reachable over an external route is not expected to

support [RFC8138]. Whether a decapsulation took place or not and

even when the 6LR is delivering the packet to a RUL, the 6LR that

injected an external route MUST uncompress the packet before

forwarding over that external route.

=93



So where are we?



We need to agree on what we place in the definition of a RUL for which Use-=
Of-RPL-Info presents a special behavior. Do we limit to the ground common w=
ith the RUL draft for which there is a defined RPL behavior, or do we defin=
e a new different thing where Use-Of-RPL-Info handles an unclear superset o=
f the nodes that support the RUL draft and for which there is a defined RPL=
 operation? I do not see the need because if (ever, though doubtful) a new =
draft defines the RPL operation for one version of =93that guy=94 then is c=
an also say whether =93that guy=94 should be handled as a RUL or as an =93e=
xternal destination=94 in Use-Of-RPL-Info.



Thus the proposal to that that the operation of a =93RUL=94 in Use-Of-RPL-I=
nfo is for a node that supports the RUL draft, and make the RUL draft a nor=
mative reference to define what that exactly mean. If we do so, MISSREF wil=
l play its guardian role to ensure that Use-Of-RPL-Info is consistent with =
the RUL draft till the last minute because it is not published too hastly.


Looking forward to your reactions,


Ines, Pascal and Michael.







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<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
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<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">Thank you for clarifying the thoughts in the mail. =
I am sure I would not have caught a drift if this would have been talked ab=
out directly (without a mail) during
 the 106-session.</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;"><br>
</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Specifically, I want to talk about the following text:&nbsp;</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
&quot;
<table style=3D"font-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West=
 European)&quot;, &quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, =
Roboto, &quot;Helvetica Neue&quot;, sans-serif; color: rgb(50, 49, 48); bac=
kground-color: rgb(255, 255, 255)">
<tbody>
<tr>
<td style=3D"padding: 0.75pt">
<p style=3D"margin-top: 0px; margin-bottom: 0px"><span lang=3D"EN-US" style=
=3D"margin: 0px; font-size: 10pt; font-family: &quot;Courier New&quot;">Thi=
s specification updates RPL [RFC6550] to RECOMMEND that external<u></u><u><=
/u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding: 0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top: 0px; margin-bottom: 0px; color: rgb(50, 49, 48); fo=
nt-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West European)&quot;, =
&quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, Roboto, &quot;Helv=
etica Neue&quot;, sans-serif; background-color: rgb(255, 255, 255)">
</p>
<table style=3D"font-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West=
 European)&quot;, &quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, =
Roboto, &quot;Helvetica Neue&quot;, sans-serif; color: rgb(50, 49, 48); bac=
kground-color: rgb(255, 255, 255)">
<tbody>
<tr>
<td style=3D"padding: 0.75pt">
<p style=3D"margin-top: 0px; margin-bottom: 0px"><span lang=3D"EN-US" style=
=3D"margin: 0px; font-size: 10pt; font-family: &quot;Courier New&quot;">tar=
gets are advertised using Non-Storing Mode signaling even in a<u></u><u></u=
></span></p>
</td>
</tr>
<tr>
<td style=3D"padding: 0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top: 0px; margin-bottom: 0px; color: rgb(50, 49, 48); fo=
nt-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West European)&quot;, =
&quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, Roboto, &quot;Helv=
etica Neue&quot;, sans-serif; background-color: rgb(255, 255, 255)">
</p>
<table style=3D"font-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West=
 European)&quot;, &quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, =
Roboto, &quot;Helvetica Neue&quot;, sans-serif; color: rgb(50, 49, 48); bac=
kground-color: rgb(255, 255, 255)">
<tbody>
<tr>
<td style=3D"padding: 0.75pt">
<p style=3D"margin-top: 0px; margin-bottom: 0px"><span lang=3D"EN-US" style=
=3D"margin: 0px; font-size: 10pt; font-family: &quot;Courier New&quot;">Sto=
ring-Mode network. This way, all packets to an external target<u></u><u></u=
></span></p>
</td>
</tr>
<tr>
<td style=3D"padding: 0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top: 0px; margin-bottom: 0px; color: rgb(50, 49, 48); fo=
nt-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West European)&quot;, =
&quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, Roboto, &quot;Helv=
etica Neue&quot;, sans-serif; background-color: rgb(255, 255, 255)">
</p>
<table style=3D"font-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West=
 European)&quot;, &quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, =
Roboto, &quot;Helvetica Neue&quot;, sans-serif; color: rgb(50, 49, 48); bac=
kground-color: rgb(255, 255, 255)">
<tbody>
<tr>
<td style=3D"padding: 0.75pt">
<p style=3D"margin-top: 0px; margin-bottom: 0px"><span lang=3D"EN-US" style=
=3D"margin: 0px; font-size: 10pt; font-family: &quot;Courier New&quot;">rea=
ch the Root that can encapsulate them, and the Root is informed of<u></u><u=
></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding: 0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top: 0px; margin-bottom: 0px; color: rgb(50, 49, 48); fo=
nt-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West European)&quot;, =
&quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, Roboto, &quot;Helv=
etica Neue&quot;, sans-serif; background-color: rgb(255, 255, 255)">
</p>
<table style=3D"font-family: &quot;Segoe UI&quot;, &quot;Segoe UI Web (West=
 European)&quot;, &quot;Segoe UI&quot;, -apple-system, BlinkMacSystemFont, =
Roboto, &quot;Helvetica Neue&quot;, sans-serif; color: rgb(50, 49, 48); bac=
kground-color: rgb(255, 255, 255)">
<tbody>
<tr>
<td style=3D"padding: 0.75pt">
<p style=3D"margin-top: 0px; margin-bottom: 0px"><span lang=3D"EN-US" style=
=3D"margin: 0px; font-size: 10pt; font-family: &quot;Courier New&quot;">the=
 address of the 6LR that terminates the IP-in-IP tunnel.</span></p>
</td>
</tr>
</tbody>
</table>
&quot;</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the
 6LRs en-route (and not only the 6LR to which the external target is attach=
ing) handle the external target in non-storing mode.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching.&nbsp;<span style=
=3D"font-family: Calibri, Helvetica, sans-serif;">The
 text opens up a lot of room for interpretations and uncovered-scenarios. I=
 am apprehensive of adding such text to useofrplinfo.</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"font-family: Calibri, Helvetica, sans-serif;"><br>
</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"font-family: Calibri, Helvetica, sans-serif;">Regarding foll=
owing, &quot;<span style=3D"color: rgb(50, 49, 48); font-family: &quot;Sego=
e UI&quot;, &quot;Segoe UI Web (West European)&quot;, &quot;Segoe UI&quot;,=
 -apple-system, BlinkMacSystemFont, Roboto, &quot;Helvetica Neue&quot;, san=
s-serif; background-color: rgb(255, 255, 255); display: inline !important">=
Do
 we limit to the ground common with the RUL draft for which there is a defi=
ned RPL behavior, or do we define a new different thing where Use-Of-RPL-In=
fo handles an unclear superset of the nodes that support the RUL draft and =
for which there is a defined RPL
 operation?<span>&nbsp;&quot;</span></span></span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;"><span style=3D"font-family: Calibri, Helvetica, san=
s-serif; background-color: rgb(255, 255, 255); display: inline !important">=
<br>
</span></span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">I certainly feel that we should limit the ground co=
mmon for which there is a defined RPL behavior.</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;"><br>
</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">In general, unaware-leaves seem to have a much broa=
der impact than I initially thought.</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;"><br>
</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">Regards,</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">Rahul</span></div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-s=
erif; font-size: 12pt;">
<div style=3D"margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica=
, sans-serif">
<br>
</div>
</span></div>
<div id=3D"appendonsend"></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:12pt; col=
or:rgb(0,0,0)">
<br>
</div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr">Then that text was stripped off the R=
UL draft and placed it in the Use-Of-RPL-Info because it was really text on=
 the forwarding behavior, which is different if some assumptions cannot be =
made on the external destination (need
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a&nbsp; new section. the&nbsp; text was moved about routing from the RUL =
draft to that section. Since it is not published
 yet, please find that text inline below:<br>
</div>
<div>
<div dir=3D"ltr">
<div>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><u></u>&nbsp;<u></u></span></=
p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">=93<u></u><u></u></span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt"><u><=
/u>&nbsp;<u></u></span></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">4.1. Updates to RFC6550: Advertise Externa=
l Routes with Non-Storing<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span style=3D"font-size:10pt; font-family:&quot;C=
ourier New&quot;">Mode Signaling.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">Section 6.7.8. of [RFC6550] introduces the=
 'E' flag that is set to<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">indicate that the 6LR that generates the D=
AO redistributes external<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">targets into the RPL network. An external =
Target is a Target that<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">has been learned through an alternate prot=
ocol, for instance a route<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">to a prefix that is outside the RPL domain=
 but reachable via a 6LR.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">Being outside of the RPL domain, a node th=
at is reached via an<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">external target cannot be guaranteed to ig=
nore the RPL artifacts and<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
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<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">cannot be expected to process the [RFC8138=
] compression correctly.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">This means that the RPL artifacts should b=
e contained in an IP-in-IP<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">encapsulation that is removed by the 6LR, =
and that any remaining<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">compression should be expanded by the 6LR =
before it forwards a packet<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span style=3D"font-size:10pt; font-family:&quot;C=
ourier New&quot;">outside the RPL domain.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">This specification updates RPL [RFC6550] t=
o RECOMMEND that external<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
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<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">targets are advertised using Non-Storing M=
ode signaling even in a<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">Storing-Mode network. This way, all packet=
s to an external target<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">reach the Root that can encapsulate them, =
and the Root is informed of<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">the address of the 6LR that terminates the=
 IP-in-IP tunnel.&nbsp;</span><span style=3D"font-size:10pt; font-family:&q=
uot;Courier New&quot;">In case<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">of an external target, the Root SHOULD use=
 the same IP-in-IP<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">encapsulation for packets that it generate=
s or that are originated<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">within the RPL domain as if the packets we=
re coming from the<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span style=3D"font-size:10pt; font-family:&quot;C=
ourier New&quot;">Internet.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">A RUL is a special case of external target=
 when the target is<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D""></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">actually a host and it is known to support=
 a consumed Routing Header<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">and to ignore a HbH header as prescribed b=
y [RFC8200]..&nbsp;</span><span style=3D"font-size:10pt; font-family:&quot;=
Courier New&quot;">The target<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">may have been learned through as a host ro=
ute or may have been<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">registered to the 6LR using [RFC8505]. IP-=
in-IP encapsulation MAY be<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">avoided for Root to RUL communication if t=
he RUL is known to process<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">the packets as forwarded by the parent 6LR=
 without decapsulation.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">In order to enable IP-in-IP all the way to=
 a 6LN, it is beneficial<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">that the 6LN supports decapsulating IP-in-=
IP, but that is not assumed<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">by [RFC8504]. If the 6LN is a RUL, the Roo=
t that encapsulates a<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">packet SHOULD terminate the tunnel at a pa=
rent 6LR unless it is aware<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">that the RUL supports IP-in-IP decapsulati=
on.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">A node that is reachable over an external =
route is not expected to<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">support [RFC8138]. Whether a decapsulation=
 took place or not and<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">even when the 6LR is delivering the packet=
 to a RUL, the 6LR that<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">injected an external route MUST uncompress=
 the packet before<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"x_MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt; font=
-family:&quot;Courier New&quot;">forwarding over that external route.<u></u=
><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">=93<u></u><u></u></span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><u></u>&nbsp;<u></u></span></=
p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">So where are we?<u></u><u></u=
></span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><u></u>&nbsp;<u></u></span></=
p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">We need to agree on what we p=
lace in the definition of a RUL for which&nbsp;</span><span lang=3D"EN-US">=
Use-Of-RPL-Info presents a special behavior. Do we limit to the ground comm=
on with the RUL draft for which there is a
 defined RPL behavior, or do we define a new different thing where Use-Of-R=
PL-Info handles an unclear superset of the nodes that support the RUL draft=
 and for which there is a defined RPL operation? I do not see the need beca=
use if (ever, though doubtful) a
 new draft defines the RPL operation for one version of =93that guy=94 then=
 is can also say whether =93that guy=94 should be handled as a RUL or as an=
 =93external destination=94</span><span lang=3D"EN-US">&nbsp;in&nbsp;</span=
><span lang=3D"EN-US">Use-Of-RPL-Info.<u></u><u></u></span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><u></u>&nbsp;<u></u></span></=
p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">Thus the proposal to that tha=
t the operation of a =93RUL=94 in Use-Of-RPL-Info is for a node that suppor=
ts the RUL draft, and make the RUL draft a normative reference to define wh=
at that exactly mean. If we do so, MISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.<u></u><u></u></span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">Looking forward to your react=
ions,</span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US">Ines, Pascal and Michael.</sp=
an></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><br>
</span></p>
<p class=3D"x_MsoNormal"><span lang=3D"EN-US"><u></u>&nbsp;</span></p>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
</body>
</html>

--_000_BM1PR01MB2612EC4F16CB281160899285A9670BM1PR01MB2612INDP_--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: stitching PDAO segments
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Subject: Re: [Roll] stitching PDAO segments
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Hello Toshio

You're correct: RPL carries the commands, but there's still a PCE.
My conclusion from this thread is that there's indeed a need to explain how=
 PDAo segments are assembled into a Track as opposed to letting the reader =
guess...


All the best;

Pascal

From: Roll <roll-bounces@ietf.org> On Behalf Of toshio9.ito@toshiba.co.jp
Sent: jeudi 25 juillet 2019 04:09
To: roll@ietf.org
Subject: Re: [Roll] stitching PDAO segments

Hi Pascal,

I thought 6TiSCH Track forwarding is a completely different forwarding sche=
me
from RPL/IPv6 forwarding, as implied in https://tools.ietf.org/html/draft-i=
etf-6tisch-architecture-24#section-3.6

In that case, we don't have to relate DAO projection and Track, I think.
Or, maybe DAO projection is one implementation of Track forwarding, with RP=
L root playing
the role of PCE?


From: Roll <roll-bounces@ietf.org<mailto:roll-bounces@ietf.org>> On Behalf =
Of Pascal Thubert (pthubert)
Sent: Thursday, July 25, 2019 7:10 AM
To: Routing Over Low power and Lossy networks <roll@ietf.org<mailto:roll@ie=
tf.org>>
Subject: [Roll] stitching PDAO segments

Dear all

Following up on stitching PDAO paths at the meeting today:

As you know, a 6TiSCH Track can be a lot more complex than a sequence of no=
des (see https://tools.ietf.org/html/draft-ietf-6tisch-architecture-24#sect=
ion-4.5.3)
It results that deploying a Track requires stitching segments into a DODAG =
from source to destination.
What makes the most sense for a 6TISCH Track is probably that each track is=
 defined as a DODAG local instance for the source. All the PDAO segments wo=
uld be stitched together into that DODAG to form a Track.
The current draft allows for this but a section that explains it all would =
certainly be useful.

Are we all OK that I propose some text about that?

All the best

Pascal

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Hello Tos=
hio<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">You&#8217;re correct: RPL carries the commands, but there&#8217;s sti=
ll a PCE.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">My conclusion from this thread is that there&#8217;s indeed a need to=
 explain how PDAo segments are assembled into a Track as opposed to letting=
 the reader guess&#8230;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">All the best;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Pascal<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;roll-bounces@ietf.org&gt;
<b>On Behalf Of </b>toshio9.ito@toshiba.co.jp<br>
<b>Sent:</b> jeudi 25 juillet 2019 04:09<br>
<b>To:</b> roll@ietf.org<br>
<b>Subject:</b> Re: [Roll] stitching PDAO segments<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">Hi Pascal,</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">I thought 6TiSCH Track forwarding is a completel=
y different forwarding scheme</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">from RPL/IPv6 forwarding, as implied in
<a href=3D"https://tools.ietf.org/html/draft-ietf-6tisch-architecture-24#se=
ction-3.6">
https://tools.ietf.org/html/draft-ietf-6tisch-architecture-24#section-3.6</=
a></span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">In that case, we don't have to relate DAO projec=
tion and Track, I think.</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">Or, maybe DAO projection is one implementation o=
f Track forwarding, with RPL root playing</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">the role of PCE?</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:&quot;MS G=
othic&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org">roll-bounces@=
ietf.org</a>&gt;
<b>On Behalf Of </b>Pascal Thubert (pthubert)<br>
<b>Sent:</b> Thursday, July 25, 2019 7:10 AM<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;<a href=3D"mailto:=
roll@ietf.org">roll@ietf.org</a>&gt;<br>
<b>Subject:</b> [Roll] stitching PDAO segments</span><o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear all</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Following up on stitching PDAO =
paths at the meeting today:</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">As you know, a 6TiSCH Track can=
 be a lot more complex than a sequence of nodes (see
<a href=3D"https://tools.ietf.org/html/draft-ietf-6tisch-architecture-24#se=
ction-4.5.3">
https://tools.ietf.org/html/draft-ietf-6tisch-architecture-24#section-4.5.3=
</a>)</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">It results that deploying a Tra=
ck requires stitching segments into a DODAG from source to destination.</sp=
an><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">What makes the most sense for a=
 6TISCH Track is probably that each track is defined as a DODAG local insta=
nce for the source. All the PDAO segments would be stitched together into t=
hat DODAG to form a Track.</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The current draft allows for th=
is but a section that explains it all would certainly be useful.</span><o:p=
></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Are we all OK that I propose so=
me text about that?</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best</span><o:p></o:p><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal</span><o:p></o:p></p>
</div>
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</div>
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To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>,  "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
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Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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On October 25, 2019 at 2:08:48 PM, Pascal Thubert wrote:

Pascal:

Hi!


> > > When the address moves on the backbone, the RPL state in the old DODA=
G
> > > is Cleaned from the 6LBR down. And the status from 6BBR to 6LBR is
> > > moved so the expectation is that it percolates down. The rejection is
> > > mostly to cleanup RPL since the leaf is expected to be long gone and
> > > registered in a different DODAG across the backbone.
> >
> > I think I understand -- homogenizing is not a bad thing. :-)
> >
> > However, I am still concerned about a couple of things:
> >
> > (1) the values are not the same...for example, "moved" in rfc8505 has a
> > value of 3, not 130. Why not use the same value? The answer to this que=
stion
> > overflows into my second concern...
>
> It cannot be a convergence because RPL had rules in
> https://tools.ietf.org/html/rfc6550#section-6.5.1 whereby the status belo=
w
> 128 are warning.
> That provision was not really used so far to my best knowledge. So we cou=
ld
> drop it. We chose not to so far. Could be done though if that's your
> recommendation.

I think that would be a lot clearer...but that is a decision that the
WG needs to make.



> > (2) draft-ietf-roll-unaware-leaves doesn't update the allocation guidel=
ines
> > from rfc6550 (=C2=A76.5.1) for the Status, which then lands "moved" in =
the
> > "Rejection" range. IOW, the meaning is changed, but the original meanin=
g of
> > the DAO-ACK Status is not updated...
> >
> > [We are not reviewing draft-ietf-roll-unaware-leaves here, so some of t=
hese
> > comments can be saved for later. ;-)]
>
> I see: we need to indicate that we update/extend the semantics of a the
> DAO-ACK status.
> Should that be indicated in npdao draft or in unaware leaves, where the I=
ANA
> is done for all?

If the IANA update is to be done in draft-ietf-roll-unaware-leaves,
then there (that is part of the reason for the Normative dependence
below).



> > Needless to say, I don't like this approach.

To be clear, what I don't like is the fact that message that seem to
be intended for different things (ND, DAO-ACK, DCO) share the same
status information...and that it is not consistently corresponding
(the same values don't mean the same things...)....so while
homogenizing is a good thing, we seem to (currently) only go half way.


> What would your recommendation be? The need is to transport the 6LoWPAN
> status back in DAO-ACK and DAR messages.
> The whole game is to divide the amount of recurrent messages by 2, by
> implicitly transport the periodic ND DAR in a periodic RPL DAO.
> The DAO-ACK is pretty small and pretty full already so stealing the lefto=
ver
> bits to transport both separately seems difficult.
>
> > But if the WG wants to go
> > forward this way, then I want to make this document Normatively depend =
on
> > draft-ietf-roll-unaware-leaves because that is where the registry and
> > meaning for the Status values are defined. I also think that because of
> > that, we will want to hold sending this document back to the RFC Editor
> > until we get the final text for draft-ietf-roll-unaware-leaves (and dec=
ide
> > that we don't need additional review for this document).
>
> That works for me, we can speed up unaware-leaves, it is mostly done.
>
> >
> > One more thing, in reading through rfc8505, I found this text (which I =
had
> > completely missed before):
> >
> > If the receiver of the message has registration state corresponding to =
the
> > related address, it SHOULD propagate the status down the forwarding pat=
h
> > to the Registered Node (e.g., reversing an existing RPL [RFC6550] path =
as
> > prescribed in [Efficient-NPDAO]).
> >
> > So...if the rfc8505 status is "moved" (which is actually the topic of t=
he
> > paragraph from where the text above was taken in =C2=A75.7), what shoul=
d be
> > propagated using the DCO? 130? Where is that specified?
> >
>
> We are specifying it right now in Efficient-NPDAO. RFC 8505 was forward
> looking to that respect. It had to indicate the ND status for that case a=
nd
> that status is "moved".
> - It means the guys was down there but is no more. Which is exactly the t=
opic
> of NPDAA, cleanup a downwards path that leads to a location from which th=
e
> target has moved away.
> - But it could not discuss how RPL translates it back and forth. The gene=
ric
> spec for that is unaware-leaves. DCO is a special case of RC/status that
> matches "moved" in RFC 8505.

Ok...so this piece is also dependent on
draft-ietf-roll-unaware-leaves. =C2=A0I expect then clear pointers from
draft-ietf-roll-efficient-npdao to it.



> > > > [major] "the RPL Status MUST NOT be changed...is informative and
> > > > does not affect the behavior of the receiver...unknown values are
> > > > ignored...Only Rejection Codes (values of 128 and above) are expect=
ed in
> > > > a DCO."
> > > >
> > > > If the value doesn't matter (informative) and unknown ones are
> > > > ignored, why specify that it MUST NOT change? What is the Normative
> > > > value of that?
>
> Because in some cases it will be turned into ND again and in those cases =
the
> meaning must be conveyed unmodified. NPDAO is the only vector we have in
> storing mode to convey something all the way down since the DAO-ACK is on=
e
> hop.
>

...
> > Sorry...let me try again. I see two problems:
> >
> > (1) The values are informative, but Normatively are not to change.
> > How can the "MUST NOT" be enforced in the network? How would a
> > receiver know if the value was changed (or not)? You added that "we can
> > reliably act differently per status value" (but the text currently
> > reads: "value is informative and does not affect the behavior of the
> > receiver") -- having a consistent/reliable behavior can be achieved onl=
y if
> > it can be guaranteed that the value didn't change. If it did change, wh=
at
> > is the expected behavior?
>
> The meaning we wanted to convey is that when propagating down the DCO, th=
e
> status from the parent MUST be repeated unchanged to the children.

Yes, I understand.

My question is from the Normative point of view. =C2=A0The rfc2119 keywords
"MUST only be used where it is actually required for interoperation".
If informative, then we don't need "MUST NOT"...but if there is a
behavior expectation (or as you wrote above: "be turned into ND again
and in those cases the meaning must be conveyed unmodified"), then the
required behavior should be able to be verified somehow...and,
ideally, the specification should include an indication of what the
behavior should be if the mandatory action is not met. =C2=A0We can of
course trust that nodes will follow the specification and will not
change the contents of the status...

So..I would like to see a couple of things:

(1) A clear indication of whether specific behavior is expected (you
have mentioned it twice in this thread, but the document doesn't
reflect that) or not based on the status.

(2) Text (maybe in the security considerations) pointing out the
effect of, changing the value in-flight, and how (if possible) to
mitigate it.



> Suggestion to reword from the perspective of the intermediate router.
>
> > (2) If only values > 128 are expected, then what should a receiver do i=
f a
> > value < 128 is received? Should the DCO not be propagated further?
>
> Yes, the DCO should be propagated and as done today, it causes the
> destruction of the path regardless of the value of the status, even a war=
ning
> <128.
> Should we change that so a warning is propagated but the route is conserv=
ed
> or something? There is no known usage of that today, does that protect th=
e
> future better?

Going back to the text, which reads: "Only Rejection Codes (values of
128 and above) are expected in a DCO." =C2=A0Also, going back to your
statements above about specific behavior resulting from the status
value. =C2=A0I just want to make sure the specification is clear related to
what should be done; if any value is ok, then the text is, at minimum
not clear...if the behavior depends on the value, then there's an
effect if the value is not that is expected...


I hope we're making progress. =C2=A0If not, we might want to think about
speaking live. :-)

Thanks!

Alvaro.


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
CC: "roll-chairs@ietf.org" <roll-chairs@ietf.org>, roll <roll@ietf.org>, Peter van der Stok <consultancy@vanderstok.org>
Thread-Topic: AD Review of draft-ietf-roll-efficient-npdao-16
Thread-Index: AQHVhRpHdCR3gF1qN0eG33Ksa1+m8KdlJ+hggATdowCAARmQUIAFaQ8AgADj+TA=
Date: Tue, 29 Oct 2019 09:51:50 +0000
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Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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Dear roll WG:

Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, a po=
sition
in which he has served for over 3 years.  Peter: thank you for all the time
and effort you have put into the WG =E2=80=94 we all look forward to workin=
g with
you in the future!

In consultation with Ines, we have asked Dominique Barthel to take on the
role of roll Co-Chair.  Dominique has been an active participant in the
IETF for over 10 years.  He can be reached at dominique.barthel@orange.com.

I am adding Dominique as a third Chair to facilitate any transition.  The
expectation is that he will fully take over for Peter at IETF 106.  Welcome
Dominique!

Thanks!

Alvaro.

--000000000000fac56405960c1fe6
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"font-family:Helve=
tica,Arial;font-size:13px">Dear roll WG:</div><div style=3D"font-family:Hel=
vetica,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,=
Arial;font-size:13px">Due to work constraints Peter can=E2=80=99t continue =
as roll Co-Chair, a position in which he has served for over 3 years.=C2=A0=
 Peter: thank you for all the time and effort you have put into the WG =E2=
=80=94 we all look forward to working with you in the future!</div><div sty=
le=3D"font-family:Helvetica,Arial;font-size:13px"><br></div><div style=3D"f=
ont-family:Helvetica,Arial;font-size:13px">In consultation with Ines, we ha=
ve asked Dominique Barthel to take on the role of roll Co-Chair.=C2=A0 Domi=
nique has been an active participant in the IETF for over 10 years.=C2=A0 H=
e can be reached at=C2=A0<a href=3D"mailto:dominique.barthel@orange.com">do=
minique.barthel@orange.com</a>.</div><div style=3D"font-family:Helvetica,Ar=
ial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;fon=
t-size:13px">I am adding Dominique as a third Chair to facilitate any trans=
ition.=C2=A0 The expectation is that he will fully take over for Peter at I=
ETF 106.=C2=A0 Welcome Dominique!</div><div style=3D"font-family:Helvetica,=
Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;f=
ont-size:13px">Thanks!</div><div style=3D"font-family:Helvetica,Arial;font-=
size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-size:13=
px">Alvaro.</div><div style=3D"font-family:Helvetica,Arial;font-size:13px">=
<br></div></body></html>

--000000000000fac56405960c1fe6--


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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
Date: Tue, 29 Oct 2019 09:57:22 -0300
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll] New roll Co-Chair
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--000000000000e22f3305960c28ab
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Welcome Dominique and congratulations!

Peter: Thank you for your work and effort during this period @ Roll.

Regards,

                                         Diego

Le mar. 29 oct. 2019 =C3=A0 09:55, Alvaro Retana <aretana.ietf@gmail.com> a
=C3=A9crit :

> Dear roll WG:
>
> Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, a =
position
> in which he has served for over 3 years.  Peter: thank you for all the ti=
me
> and effort you have put into the WG =E2=80=94 we all look forward to work=
ing with
> you in the future!
>
> In consultation with Ines, we have asked Dominique Barthel to take on the
> role of roll Co-Chair.  Dominique has been an active participant in the
> IETF for over 10 years.  He can be reached at dominique.barthel@orange.co=
m
> .
>
> I am adding Dominique as a third Chair to facilitate any transition.  The
> expectation is that he will fully take over for Peter at IETF 106.  Welco=
me
> Dominique!
>
> Thanks!
>
> Alvaro.
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>


--=20
DIEGO DUJOVNE
Profesor Asociado
Escuela de Inform=C3=A1tica y Telecomunicaciones
Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile
www.ingenieria.udp.cl
(56 2) 676 8125

--000000000000e22f3305960c28ab
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Welcome Dominique and congratulations!<div><br></div><div>=
Peter: Thank you for your work and effort during this period=C2=A0@ Roll.</=
div><div><br></div><div>Regards,</div><div><br></div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Diego=C2=A0</div></d=
iv><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">Le=
=C2=A0mar. 29 oct. 2019 =C3=A0=C2=A009:55, Alvaro Retana &lt;<a href=3D"mai=
lto:aretana.ietf@gmail.com">aretana.ietf@gmail.com</a>&gt; a =C3=A9crit=C2=
=A0:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style=
=3D"overflow-wrap: break-word;"><div style=3D"font-family:Helvetica,Arial;f=
ont-size:13px">Dear roll WG:</div><div style=3D"font-family:Helvetica,Arial=
;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-s=
ize:13px">Due to work constraints Peter can=E2=80=99t continue as roll Co-C=
hair, a position in which he has served for over 3 years.=C2=A0 Peter: than=
k you for all the time and effort you have put into the WG =E2=80=94 we all=
 look forward to working with you in the future!</div><div style=3D"font-fa=
mily:Helvetica,Arial;font-size:13px"><br></div><div style=3D"font-family:He=
lvetica,Arial;font-size:13px">In consultation with Ines, we have asked Domi=
nique Barthel to take on the role of roll Co-Chair.=C2=A0 Dominique has bee=
n an active participant in the IETF for over 10 years.=C2=A0 He can be reac=
hed at=C2=A0<a href=3D"mailto:dominique.barthel@orange.com" target=3D"_blan=
k">dominique.barthel@orange.com</a>.</div><div style=3D"font-family:Helveti=
ca,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Aria=
l;font-size:13px">I am adding Dominique as a third Chair to facilitate any =
transition.=C2=A0 The expectation is that he will fully take over for Peter=
 at IETF 106.=C2=A0 Welcome Dominique!</div><div style=3D"font-family:Helve=
tica,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Ar=
ial;font-size:13px">Thanks!</div><div style=3D"font-family:Helvetica,Arial;=
font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-si=
ze:13px">Alvaro.</div><div style=3D"font-family:Helvetica,Arial;font-size:1=
3px"><br></div></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div>DIEG=
O DUJOVNE<br>Profesor Asociado<br>Escuela de Inform=C3=A1tica y Telecomunic=
aciones<br>Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile=
<br><a href=3D"http://www.ingenieria.udp.cl" target=3D"_blank">www.ingenier=
ia.udp.cl</a><br>(56 2) 676 8125<br></div></div></div></div></div>

--000000000000e22f3305960c28ab--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] New roll Co-Chair
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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Tue, 29 Oct 2019 15:04:50 +0200
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000001e788305960c45df"
Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/i6r18As_6OHfvUjMpW_TFaltbog>
Subject: Re: [Roll] New roll Co-Chair
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Hi,

Thank you very much to Peter for the excellent job done :) and to Dominique
for willing to serve the working group as co-chair :).

Best,

Ines.

On Tue, Oct 29, 2019 at 2:55 PM Alvaro Retana <aretana.ietf@gmail.com>
wrote:

> Dear roll WG:
>
> Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, a =
position
> in which he has served for over 3 years.  Peter: thank you for all the ti=
me
> and effort you have put into the WG =E2=80=94 we all look forward to work=
ing with
> you in the future!
>
> In consultation with Ines, we have asked Dominique Barthel to take on the
> role of roll Co-Chair.  Dominique has been an active participant in the
> IETF for over 10 years.  He can be reached at dominique.barthel@orange.co=
m
> .
>
> I am adding Dominique as a third Chair to facilitate any transition.  The
> expectation is that he will fully take over for Peter at IETF 106.  Welco=
me
> Dominique!
>
> Thanks!
>
> Alvaro.
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--0000000000001e788305960c45df
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<div dir=3D"ltr">Hi,<div><br></div><div>Thank you very much to=C2=A0Peter f=
or the excellent job done :) and to Dominique for willing to serve the work=
ing group=C2=A0as co-chair :).</div><div><br></div><div>Best,</div><div><br=
></div><div>Ines.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr=
" class=3D"gmail_attr">On Tue, Oct 29, 2019 at 2:55 PM Alvaro Retana &lt;<a=
 href=3D"mailto:aretana.ietf@gmail.com">aretana.ietf@gmail.com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style=3D=
"overflow-wrap: break-word;"><div style=3D"font-family:Helvetica,Arial;font=
-size:13px">Dear roll WG:</div><div style=3D"font-family:Helvetica,Arial;fo=
nt-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-size=
:13px">Due to work constraints Peter can=E2=80=99t continue as roll Co-Chai=
r, a position in which he has served for over 3 years.=C2=A0 Peter: thank y=
ou for all the time and effort you have put into the WG =E2=80=94 we all lo=
ok forward to working with you in the future!</div><div style=3D"font-famil=
y:Helvetica,Arial;font-size:13px"><br></div><div style=3D"font-family:Helve=
tica,Arial;font-size:13px">In consultation with Ines, we have asked Dominiq=
ue Barthel to take on the role of roll Co-Chair.=C2=A0 Dominique has been a=
n active participant in the IETF for over 10 years.=C2=A0 He can be reached=
 at=C2=A0<a href=3D"mailto:dominique.barthel@orange.com" target=3D"_blank">=
dominique.barthel@orange.com</a>.</div><div style=3D"font-family:Helvetica,=
Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;f=
ont-size:13px">I am adding Dominique as a third Chair to facilitate any tra=
nsition.=C2=A0 The expectation is that he will fully take over for Peter at=
 IETF 106.=C2=A0 Welcome Dominique!</div><div style=3D"font-family:Helvetic=
a,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial=
;font-size:13px">Thanks!</div><div style=3D"font-family:Helvetica,Arial;fon=
t-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-size:=
13px">Alvaro.</div><div style=3D"font-family:Helvetica,Arial;font-size:13px=
"><br></div></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: [Roll] New roll Co-Chair
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Subject: Re: [Roll] New roll Co-Chair
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From nobody Tue Oct 29 06:33:09 2019
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From: Kerry Lynn <kerlyn@ieee.org>
Date: Tue, 29 Oct 2019 09:32:50 -0400
Message-ID: <CABOxzu300XZj81zBSEcJfzKQPbJD7ddXEv4UQifs-o0awwx0mw@mail.gmail.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/rOUCrcbFjo5D6lEMMf-2nAhIFqI>
Subject: Re: [Roll] New roll Co-Chair
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Thank you Peter for all you helped accomplish during your tenure.
Welcome Dominique!

Cheers, Kerry

On Tue, Oct 29, 2019 at 9:17 AM Pascal Thubert (pthubert) <
pthubert@cisco.com> wrote:

> Many thanks Peter for your great chairmanship over the years!
>
>
>
> Pascal
>
>
>
>
>
> On Tue, Oct 29, 2019 at 2:55 PM Alvaro Retana <aretana.ietf@gmail.com>
> wrote:
>
> Dear roll WG:
>
>
>
> Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, a =
position
> in which he has served for over 3 years.  Peter: thank you for all the ti=
me
> and effort you have put into the WG =E2=80=94 we all look forward to work=
ing with
> you in the future!
>
>
>
> In consultation with Ines, we have asked Dominique Barthel to take on the
> role of roll Co-Chair.  Dominique has been an active participant in the
> IETF for over 10 years.  He can be reached at dominique.barthel@orange.co=
m
> .
>
>
>
> I am adding Dominique as a third Chair to facilitate any transition.  The
> expectation is that he will fully take over for Peter at IETF 106.  Welco=
me
> Dominique!
>
>
>
> Thanks!
>
>
>
> Alvaro.
>
>
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr"><div>Thank you Peter for all you helped accomplish during =
your tenure.<br></div><div>Welcome Dominique!</div><div><br></div><div>Chee=
rs, Kerry<br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" cl=
ass=3D"gmail_attr">On Tue, Oct 29, 2019 at 9:17 AM Pascal Thubert (pthubert=
) &lt;<a href=3D"mailto:pthubert@cisco.com">pthubert@cisco.com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"FR">
<div class=3D"gmail-m_-3422093004519297999WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US">Many thanks Peter for your grea=
t chairmanship over the years!<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<div style=3D"border-color:currentcolor currentcolor currentcolor blue;bord=
er-style:none none none solid;border-width:medium medium medium 1.5pt;paddi=
ng:0cm 0cm 0cm 4pt">
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<div>
<div>
<p class=3D"MsoNormal">On Tue, Oct 29, 2019 at 2:55 PM Alvaro Retana &lt;<a=
 href=3D"mailto:aretana.ietf@gmail.com" target=3D"_blank">aretana.ietf@gmai=
l.com</a>&gt; wrote:<u></u><u></u></p>
</div>
<blockquote>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">Dear roll WG:<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">Due to work constraints Peter can=E2=80=99t continu=
e as roll Co-Chair, a position in which he has served for over 3 years.=C2=
=A0 Peter: thank you for all the time and effort you have
 put into the WG =E2=80=94 we all look forward to working with you in the f=
uture!<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">In consultation with Ines, we have asked Dominique =
Barthel to take on the role of roll Co-Chair.=C2=A0 Dominique has been an a=
ctive participant in the IETF for over 10 years.=C2=A0
 He can be reached at=C2=A0<a href=3D"mailto:dominique.barthel@orange.com" =
target=3D"_blank">dominique.barthel@orange.com</a>.<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">I am adding Dominique as a third Chair to facilitat=
e any transition.=C2=A0 The expectation is that he will fully take over for=
 Peter at IETF 106.=C2=A0 Welcome Dominique!<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">Thanks!<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif">Alvaro.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Helv=
etica&quot;,sans-serif"><u></u>=C2=A0<u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal">_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/roll</a><u></u><u></u></p>
</blockquote>
</div>
</div>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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From: Rahul Jadhav <nyrahul@outlook.com>
To: roll <roll@ietf.org>
Thread-Topic: [Roll] New roll Co-Chair
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Thank you Peter for all the work and guidance over the course.
Most welcome Dominique and congratulations.

See you all in Singapore. Safe travels!

Best,
Rahul
________________________________
From: Roll <roll-bounces@ietf.org> on behalf of Alvaro Retana <aretana.ietf=
@gmail.com>
Sent: Tuesday, October 29, 2019 12:55 PM
To: roll <roll@ietf.org>
Subject: [Roll] New roll Co-Chair

Dear roll WG:

Due to work constraints Peter can=92t continue as roll Co-Chair, a position=
 in which he has served for over 3 years.  Peter: thank you for all the tim=
e and effort you have put into the WG =97 we all look forward to working wi=
th you in the future!

In consultation with Ines, we have asked Dominique Barthel to take on the r=
ole of roll Co-Chair.  Dominique has been an active participant in the IETF=
 for over 10 years.  He can be reached at dominique.barthel@orange.com<mail=
to:dominique.barthel@orange.com>.

I am adding Dominique as a third Chair to facilitate any transition.  The e=
xpectation is that he will fully take over for Peter at IETF 106.  Welcome =
Dominique!

Thanks!

Alvaro.


--_000_BM1PR01MB2612996AFF2BEC15706CEC07A9610BM1PR01MB2612INDP_
Content-Type: text/html; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Thank you Peter for all the work and guidance over the course.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Most welcome Dominique and congratulations.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
See you all in Singapore.&nbsp;<span style=3D"color: rgb(0, 0, 0); font-fam=
ily: Calibri, Helvetica, sans-serif; font-size: 12pt;">Safe travels!</span>=
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Best,</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;=
 color: rgb(0, 0, 0);">
Rahul</div>
<div id=3D"appendonsend"></div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Roll &lt;roll-bounces=
@ietf.org&gt; on behalf of Alvaro Retana &lt;aretana.ietf@gmail.com&gt;<br>
<b>Sent:</b> Tuesday, October 29, 2019 12:55 PM<br>
<b>To:</b> roll &lt;roll@ietf.org&gt;<br>
<b>Subject:</b> [Roll] New roll Co-Chair</font>
<div>&nbsp;</div>
</div>
<style>
<!--
body
	{font-family:Helvetica,Arial;
	font-size:13px}
-->
</style>
<div style=3D"word-wrap:break-word">
<div style=3D"font-family:Helvetica,Arial; font-size:13px">Dear roll WG:</d=
iv>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px">Due to work cons=
traints Peter can=92t continue as roll Co-Chair, a position in which he has=
 served for over 3 years.&nbsp; Peter: thank you for all the time and effor=
t you have put into the WG =97 we all look
 forward to working with you in the future!</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px">In consultation =
with Ines, we have asked Dominique Barthel to take on the role of roll Co-C=
hair.&nbsp; Dominique has been an active participant in the IETF for over 1=
0 years.&nbsp; He can be reached at&nbsp;<a href=3D"mailto:dominique.barthe=
l@orange.com">dominique.barthel@orange.com</a>.</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px">I am adding Domi=
nique as a third Chair to facilitate any transition.&nbsp; The expectation =
is that he will fully take over for Peter at IETF 106.&nbsp; Welcome Domini=
que!</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px">Thanks!</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px">Alvaro.</div>
<div style=3D"font-family:Helvetica,Arial; font-size:13px"><br>
</div>
</div>
</body>
</html>

--_000_BM1PR01MB2612996AFF2BEC15706CEC07A9610BM1PR01MB2612INDP_--


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From: Alexander Pelov <a@ackl.io>
Date: Tue, 29 Oct 2019 14:58:23 +0100
Message-ID: <CACQW0EqBz1f2=DRT2HUG1SgRVCn45x8m+1xaRNe=6Mn4Dd3w9Q@mail.gmail.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Content-Type: multipart/alternative; boundary="000000000000189d4505960d039f"
Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/lfc2FaID2R4yuK0vgyszUaq05CQ>
Subject: Re: [Roll] New roll Co-Chair
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Thanks, Peter, for all the work and personal investment, thanks to which
the group advanced successfully over the years!

And a warm welcome to Dominique!

Cheers,
Alexander

On Tue, Oct 29, 2019 at 2:38 PM Rahul Jadhav <nyrahul@outlook.com> wrote:

> Thank you Peter for all the work and guidance over the course.
> Most welcome Dominique and congratulations.
>
> See you all in Singapore. Safe travels!
>
> Best,
> Rahul
> ------------------------------
> *From:* Roll <roll-bounces@ietf.org> on behalf of Alvaro Retana <
> aretana.ietf@gmail.com>
> *Sent:* Tuesday, October 29, 2019 12:55 PM
> *To:* roll <roll@ietf.org>
> *Subject:* [Roll] New roll Co-Chair
>
> Dear roll WG:
>
> Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, a =
position
> in which he has served for over 3 years.  Peter: thank you for all the ti=
me
> and effort you have put into the WG =E2=80=94 we all look forward to work=
ing with
> you in the future!
>
> In consultation with Ines, we have asked Dominique Barthel to take on the
> role of roll Co-Chair.  Dominique has been an active participant in the
> IETF for over 10 years.  He can be reached at dominique.barthel@orange.co=
m
> .
>
> I am adding Dominique as a third Chair to facilitate any transition.  The
> expectation is that he will fully take over for Peter at IETF 106.  Welco=
me
> Dominique!
>
> Thanks!
>
> Alvaro.
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--000000000000189d4505960d039f
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr">Thanks, Peter, for all the work and personal investment, t=
hanks to which the group advanced successfully over the years!<div><br></di=
v><div>And a warm welcome to Dominique!</div><div><br></div><div>Cheers,</d=
iv><div>Alexander=C2=A0</div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Tue, Oct 29, 2019 at 2:38 PM Rahul Jadhav =
&lt;<a href=3D"mailto:nyrahul@outlook.com">nyrahul@outlook.com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Thank you Peter for all the work and guidance over the course.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Most welcome Dominique and congratulations.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
See you all in Singapore.=C2=A0<span style=3D"color:rgb(0,0,0);font-family:=
Calibri,Helvetica,sans-serif;font-size:12pt">Safe travels!</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Best,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul</div>
<div id=3D"gmail-m_-7182449784468370083appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_-7182449784468370083divRplyFwdMsg" dir=3D"ltr"><font fac=
e=3D"Calibri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>Fro=
m:</b> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">=
roll-bounces@ietf.org</a>&gt; on behalf of Alvaro Retana &lt;<a href=3D"mai=
lto:aretana.ietf@gmail.com" target=3D"_blank">aretana.ietf@gmail.com</a>&gt=
;<br>
<b>Sent:</b> Tuesday, October 29, 2019 12:55 PM<br>
<b>To:</b> roll &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll=
@ietf.org</a>&gt;<br>
<b>Subject:</b> [Roll] New roll Co-Chair</font>
<div>=C2=A0</div>
</div>

<div style=3D"overflow-wrap: break-word;">
<div style=3D"font-family:Helvetica,Arial;font-size:13px">Dear roll WG:</di=
v>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px">Due to work const=
raints Peter can=E2=80=99t continue as roll Co-Chair, a position in which h=
e has served for over 3 years.=C2=A0 Peter: thank you for all the time and =
effort you have put into the WG =E2=80=94 we all look
 forward to working with you in the future!</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px">In consultation w=
ith Ines, we have asked Dominique Barthel to take on the role of roll Co-Ch=
air.=C2=A0 Dominique has been an active participant in the IETF for over 10=
 years.=C2=A0 He can be reached at=C2=A0<a href=3D"mailto:dominique.barthel=
@orange.com" target=3D"_blank">dominique.barthel@orange.com</a>.</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px">I am adding Domin=
ique as a third Chair to facilitate any transition.=C2=A0 The expectation i=
s that he will fully take over for Peter at IETF 106.=C2=A0 Welcome Dominiq=
ue!</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px">Thanks!</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px">Alvaro.</div>
<div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>
</div>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

--000000000000189d4505960d039f--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Thread-Topic: Adopting turnon 8138
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Subject: [Roll] Adopting turnon 8138
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Dear all

https://tools.ietf.org/html/draft-thubert-roll-turnon-rfc8138-03 is a simpl=
e draft that completes RFC 8138 with bits in the config option to enable tu=
rning it on in an brown field.
There's no black magic and it would be good to progress it in the backgroun=
d rather than forget it. Could we consider adoption?

All the best

Pascal

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<p class=3D"MsoNormal">Dear all <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"https://tools.ietf.o=
rg/html/draft-thubert-roll-turnon-rfc8138-03">https://tools.ietf.org/html/d=
raft-thubert-roll-turnon-rfc8138-03</a> is a simple draft that completes RF=
C 8138 with bits in the config option
 to enable turning it on in an brown field.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There&#8217;s no black magic an=
d it would be good to progress it in the background rather than forget it. =
Could we consider adoption?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<o:p></o:p></span></p>
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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
Date: Tue, 29 Oct 2019 11:35:35 -0300
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Subject: Re: [Roll] Adopting turnon 8138
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I support the adoption of this draft.

El mar., 29 de octubre de 2019 11:34, Pascal Thubert (pthubert) <
pthubert@cisco.com> escribi=C3=B3:

> Dear all
>
>
>
> https://tools.ietf.org/html/draft-thubert-roll-turnon-rfc8138-03 is a
> simple draft that completes RFC 8138 with bits in the config option to
> enable turning it on in an brown field.
>
> There=E2=80=99s no black magic and it would be good to progress it in the
> background rather than forget it. Could we consider adoption?
>
>
>
> All the best
>
>
>
> Pascal
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"auto">I support the adoption of this draft.</div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">El mar., 29 de octub=
re de 2019 11:34, Pascal Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@=
cisco.com">pthubert@cisco.com</a>&gt; escribi=C3=B3:<br></div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex">





<div lang=3D"FR" link=3D"#0563C1" vlink=3D"#954F72">
<div>
<p class=3D"MsoNormal">Dear all <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"https://tools.ietf.o=
rg/html/draft-thubert-roll-turnon-rfc8138-03" target=3D"_blank" rel=3D"nore=
ferrer">https://tools.ietf.org/html/draft-thubert-roll-turnon-rfc8138-03</a=
> is a simple draft that completes RFC 8138 with bits in the config option
 to enable turning it on in an brown field.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There=E2=80=99s no black magic =
and it would be good to progress it in the background rather than forget it=
. Could we consider adoption?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best<u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<u></u><u></u></span></p>
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From: "Georgios Z. Papadopoulos" <georgios.papadopoulos@imt-atlantique.fr>
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll] New roll Co-Chair
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@Peter : thank you very much for the excellent job!=20
@Dominique : warmest welcome :-)

Georgios


> On Oct 29, 2019, at 13:55, Alvaro Retana <aretana.ietf@gmail.com> =
wrote:
>=20
> Dear roll WG:
>=20
> Due to work constraints Peter can=E2=80=99t continue as roll Co-Chair, =
a position in which he has served for over 3 years.  Peter: thank you =
for all the time and effort you have put into the WG =E2=80=94 we all =
look forward to working with you in the future!
>=20
> In consultation with Ines, we have asked Dominique Barthel to take on =
the role of roll Co-Chair.  Dominique has been an active participant in =
the IETF for over 10 years.  He can be reached at =
dominique.barthel@orange.com <mailto:dominique.barthel@orange.com>.
>=20
> I am adding Dominique as a third Chair to facilitate any transition.  =
The expectation is that he will fully take over for Peter at IETF 106.  =
Welcome Dominique!
>=20
> Thanks!
>=20
> Alvaro.
>=20
> _______________________________________________
> Roll mailing list
> Roll@ietf.org <mailto:Roll@ietf.org>
> https://www.ietf.org/mailman/listinfo/roll =
<https://www.ietf.org/mailman/listinfo/roll>

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">@Peter : thank you very much for the excellent job!&nbsp;<div =
class=3D"">@Dominique : warmest welcome :-)</div><div class=3D""><br =
class=3D""></div><div class=3D"">Georgios<div class=3D""><div =
style=3D"color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><br =
class=3D""></div></div></div></div></div></div>
</div>
<br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Oct 29, 2019, at 13:55, Alvaro Retana &lt;<a =
href=3D"mailto:aretana.ietf@gmail.com" =
class=3D"">aretana.ietf@gmail.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D"">Dear roll WG:</div><div =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D""><br class=3D""></div><div=
 style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D"">Due to work constraints =
Peter can=E2=80=99t continue as roll Co-Chair, a position in which he =
has served for over 3 years.&nbsp; Peter: thank you for all the time and =
effort you have put into the WG =E2=80=94 we all look forward to working =
with you in the future!</div><div style=3D"font-family: Helvetica, =
Arial; font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><br class=3D""></div><div style=3D"font-family: Helvetica, =
Arial; font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D"">In consultation with Ines, we have asked Dominique Barthel to =
take on the role of roll Co-Chair.&nbsp; Dominique has been an active =
participant in the IETF for over 10 years.&nbsp; He can be reached =
at&nbsp;<a href=3D"mailto:dominique.barthel@orange.com" =
class=3D"">dominique.barthel@orange.com</a>.</div><div =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D""><br class=3D""></div><div=
 style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D"">I am adding Dominique =
as a third Chair to facilitate any transition.&nbsp; The expectation is =
that he will fully take over for Peter at IETF 106.&nbsp; Welcome =
Dominique!</div><div style=3D"font-family: Helvetica, Arial; font-size: =
13px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><br =
class=3D""></div><div style=3D"font-family: Helvetica, Arial; font-size: =
13px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D"">Thanks!</div><div style=3D"font-family: Helvetica, Arial; =
font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><br class=3D""></div><div style=3D"font-family: Helvetica, =
Arial; font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D"">Alvaro.</div><div style=3D"font-family: Helvetica, Arial; =
font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><br class=3D""></div><span style=3D"font-family: Helvetica, =
Arial; font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: =
none; display: inline !important;" =
class=3D"">_______________________________________________</span><br =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" class=3D""><span =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; float: none; display: inline =
!important;" class=3D"">Roll mailing list</span><br style=3D"font-family: =
Helvetica, Arial; font-size: 13px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px;" class=3D""><a =
href=3D"mailto:Roll@ietf.org" style=3D"font-family: Helvetica, Arial; =
font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D"">Roll@ietf.org</a><br style=3D"font-family: Helvetica, Arial; =
font-size: 13px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><a href=3D"https://www.ietf.org/mailman/listinfo/roll" =
style=3D"font-family: Helvetica, Arial; font-size: 13px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px;" =
class=3D"">https://www.ietf.org/mailman/listinfo/roll</a></div></blockquot=
e></div><br class=3D""></div></body></html>=

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From: Alvaro Retana <aretana.ietf@gmail.com>
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Date: Tue, 29 Oct 2019 15:09:54 -0700
Message-ID: <CAMMESswv7rj56RXsV-OWcoDJUf0wDmUpPdAqo1Ev5udzEHVdeQ@mail.gmail.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>,  "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
Cc: "roll-chairs@ietf.org" <roll-chairs@ietf.org>, roll <roll@ietf.org>,  Peter van der Stok <consultancy@vanderstok.org>
Content-Type: multipart/alternative; boundary="00000000000055e4d5059613e057"
Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/DD5p_FT4Pzgg8-jPhghPaVkQwxw>
Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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--00000000000055e4d5059613e057
Content-Type: text/plain; charset="UTF-8"
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Hi!

I=E2=80=99m fine with the changes proposed to draft-ietf-roll-efficient-npd=
ao.

I want to see the WG reach consensus on the changes related
to draft-ietf-roll-unaware-leaves.

Thanks!

Alvaro.

On October 29, 2019 at 5:52:13 AM, Pascal Thubert (pthubert) (
pthubert@cisco.com) wrote:

 If you agree with the proposed line above I'll make editions and come back
to you for more comments and/or approval.

--00000000000055e4d5059613e057
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"font-family:Helve=
tica,Arial;font-size:13px">Hi!</div><div style=3D"font-family:Helvetica,Ari=
al;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font=
-size:13px">I=E2=80=99m fine with the changes proposed to=C2=A0draft-ietf-r=
oll-efficient-npdao.</div><div style=3D"font-family:Helvetica,Arial;font-si=
ze:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-size:13px=
">I want to see the WG reach consensus on the changes related to=C2=A0draft=
-ietf-roll-unaware-leaves.</div><div style=3D"font-family:Helvetica,Arial;f=
ont-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;font-siz=
e:13px">Thanks!</div><div style=3D"font-family:Helvetica,Arial;font-size:13=
px"><br></div><div style=3D"font-family:Helvetica,Arial;font-size:13px">Alv=
aro.</div> <br><p class=3D"airmail_on">On October 29, 2019 at 5:52:13 AM, P=
ascal Thubert (pthubert) (<a href=3D"mailto:pthubert@cisco.com">pthubert@ci=
sco.com</a>) wrote:</p> <blockquote type=3D"cite" class=3D"clean_bq"><span>=
<div><span style=3D"color:rgb(0,0,0);font-family:&#39;helvetica Neue&#39;,h=
elvetica;font-size:14px;font-style:normal;font-variant-caps:normal;font-wei=
ght:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-tran=
sform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255=
,255);display:inline!important;float:none"><span class=3D"Apple-converted-s=
pace">=C2=A0</span>If you agree with the proposed line above I&#39;ll make =
editions and come back to you for more comments and/or approval.<span class=
=3D"Apple-converted-space">=C2=A0</span></span></div></span></blockquote> <=
div class=3D"gmail_signature"></div></body></html>

--00000000000055e4d5059613e057--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>, Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-roll-efficient-npdao@ietf.org" <draft-ietf-roll-efficient-npdao@ietf.org>
CC: "roll-chairs@ietf.org" <roll-chairs@ietf.org>, roll <roll@ietf.org>, Peter van der Stok <consultancy@vanderstok.org>
Thread-Topic: AD Review of draft-ietf-roll-efficient-npdao-16
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/R1wsfj6vVZmJUxVE1pylco3LVi8>
Subject: Re: [Roll] AD Review of draft-ietf-roll-efficient-npdao-16
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From: Remous-Aris Koutsiamanis <aris@ariskou.com>
Date: Wed, 30 Oct 2019 10:56:04 +0100 (CET)
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Hello,

yes, I was planning to addess them, I should have an update by tomorrow as
well as responses to Rahul's comments.

Best,
Aris

On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav <nyrahul@outlook.com> wrote:

> I had sent my comments sometime before.
> Link:
> https://mailarchive.ietf.org/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4
>
> I certainly feel the draft needs updates.
>
> Regards,
> Rahul
> ------------------------------
> *From:* Roll <roll-bounces@ietf.org> on behalf of
> dominique.barthel@orange.com <dominique.barthel@orange.com>
> *Sent:* Wednesday, October 30, 2019 8:45 AM
> *To:* roll@ietf.org <roll@ietf.org>
> *Subject:* [Roll] WGLC for =E2=80=8Bdraft-ietf-roll-nsa-extension-04
>
> Dear all,
>
> A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for
> *draft-ietf-roll-nsa-extension-04*.
> The draft is available here:
> https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/
> Please review this draft to see if you think that it is ready for
> publication and send comments to the list stating your view.
> Thank you very much in advance,
>
> Ines, Peter and Dominique.
>
> _________________________________________________________________________=
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<div dir=3D"ltr"><div>Hello,</div><div><br></div><div>yes, I was planning t=
o addess them, I should have an update by tomorrow as well as responses to =
Rahul&#39;s comments.</div><div><br></div><div>Best,</div><div>Aris<br></di=
v></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr=
">On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrah=
ul@outlook.com">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I had sent my comments sometime before.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Link:=C2=A0</span><a href=3D"https://mailarchive.ietf.org/arc=
h/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4" style=3D"font-family:Calibri,Helvet=
ica,sans-serif;font-size:12pt" target=3D"_blank">https://mailarchive.ietf.o=
rg/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I certainly feel the draft needs updates.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Regards,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
</div>
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<div id=3D"gmail-m_-8182716046083514144divRplyFwdMsg" dir=3D"ltr"><font sty=
le=3D"font-size:11pt" face=3D"Calibri, sans-serif" color=3D"#000000"><b>Fro=
m:</b> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">=
roll-bounces@ietf.org</a>&gt; on behalf of <a href=3D"mailto:dominique.bart=
hel@orange.com" target=3D"_blank">dominique.barthel@orange.com</a> &lt;<a h=
ref=3D"mailto:dominique.barthel@orange.com" target=3D"_blank">dominique.bar=
thel@orange.com</a>&gt;<br>
<b>Sent:</b> Wednesday, October 30, 2019 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org=
</a> &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a>&gt;<br>
<b>Subject:</b> [Roll] WGLC for =E2=80=8Bdraft-ietf-roll-nsa-extension-04</=
font>
<div>=C2=A0</div>
</div>
<div style=3D"color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-seri=
f">
<div>
<div>Dear all,</div>
<div><br>
</div>
<div>A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for =
<b>draft-ietf-roll-nsa-extension-04</b>.</div>
<div>The draft is available here: <a href=3D"https://datatracker.ietf.org/d=
oc/draft-ietf-roll-nsa-extension/" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/</a>=C2=A0</=
div>
<div>Please review this draft to see if you think that it is ready for publ=
ication and send comments to the list stating your view.</div>
<div>Thank you very much in advance,</div>
<div><br>
</div>
<div>Ines, Peter and Dominique.</div>
</div>
<div><br>
</div>
<pre>______________________________________________________________________=
___________________________________________________

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</pre>
</div>
</div>

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</blockquote></div>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Wed, 30 Oct 2019 12:20:02 +0200
Message-ID: <CAP+sJUd_8rmQnp3MP9A9NAGG+DAoqO-xsw3HPXrrrBoCjHRKQA@mail.gmail.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/WCXpbLNEO6GSJOZHay1noXWMvH0>
Subject: [Roll] WG Call for Adopting turnon 8138
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Hi,

The Call for adoption finalizes on 13th November,

Please let us know your opinion.

Thank you,

Ines, Dominique and Peter

On Tue, Oct 29, 2019 at 4:34 PM Pascal Thubert (pthubert) <
pthubert@cisco.com> wrote:

> Dear all
>
>
>
> https://tools.ietf.org/html/draft-thubert-roll-turnon-rfc8138-03 is a
> simple draft that completes RFC 8138 with bits in the config option to
> enable turning it on in an brown field.
>
> There=E2=80=99s no black magic and it would be good to progress it in the
> background rather than forget it. Could we consider adoption?
>
>
>
> All the best
>
>
>
> Pascal
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>The Call for adoption fi=
nalizes on 13th November,=C2=A0</div><div><br></div><div>Please let us know=
 your opinion.</div><div><br></div><div>Thank you,=C2=A0</div><div><br></di=
v><div>Ines, Dominique and Peter</div><br><div class=3D"gmail_quote"><div d=
ir=3D"ltr" class=3D"gmail_attr">On Tue, Oct 29, 2019 at 4:34 PM Pascal Thub=
ert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.com">pthubert@cisco.com=
</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"FR">
<div>
<p class=3D"MsoNormal">Dear all <u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"https://tools.ietf.o=
rg/html/draft-thubert-roll-turnon-rfc8138-03" target=3D"_blank">https://too=
ls.ietf.org/html/draft-thubert-roll-turnon-rfc8138-03</a> is a simple draft=
 that completes RFC 8138 with bits in the config option
 to enable turning it on in an brown field.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There=E2=80=99s no black magic =
and it would be good to progress it in the background rather than forget it=
. Could we consider adoption?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best<u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<u></u><u></u></span></p>
</div>
</div>

_______________________________________________<br>
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arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>

--000000000000967ee805961e15fe--


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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Wed, 30 Oct 2019 13:15:59 +0200
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
Cc: Michael Richardson <mcr+ietf@sandelman.ca>
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Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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Hi Rahul,

Thank you very much for the detailed review,  few comments in-line.



On Sun, Oct 27, 2019 at 6:49 AM Rahul Jadhav <nyrahul@outlook.com> wrote:

> Thank you for clarifying the thoughts in the mail. I am sure I would not
> have caught a drift if this would have been talked about directly (withou=
t
> a mail) during the 106-session.
>
> Specifically, I want to talk about the following text:
>
> "
>
> This specification updates RPL [RFC6550] to RECOMMEND that external
>
> targets are advertised using Non-Storing Mode signaling even in a
>
> Storing-Mode network. This way, all packets to an external target
>
> reach the Root that can encapsulate them, and the Root is informed of
>
> the address of the 6LR that terminates the IP-in-IP tunnel.
> "
> I understand the reason why we need IP-in-IP tunnel terminating at the 6L=
R
> advertising the external-target. But when we say that only external targe=
ts
> are advertised using non-storing mode signaling even in a storing MOP, wh=
at
> we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h
> the external target is attaching) handle the external target in non-stori=
ng
> mode.
> This means that all 6LRs in the network need to be capable of non-storing
> and storing mode even though the MOP advertised was for storing MOP only.
> This has implications for behaviour during parent switching. The text
> opens up a lot of room for interpretations and uncovered-scenarios. I am
> apprehensive of adding such text to useofrplinfo.
>

We are going to improve that text, to avoid wrong interpretations, and
clarifying the methodology when the traffic is directed to the RUL.

>
> Regarding following, "Do we limit to the ground common with the RUL draft
> for which there is a defined RPL behavior, or do we define a new differen=
t
> thing where Use-Of-RPL-Info handles an unclear superset of the nodes that
> support the RUL draft and for which there is a defined RPL operation? "
>
> I certainly feel that we should limit the ground common for which there i=
s
> a defined RPL behavior.
>

Ok,  thank you.

>
> In general, unaware-leaves seem to have a much broader impact than I
> initially thought.
>

Agree :)

Best, Ines.

>
> Regards,
> Rahul
>
>
> ------------------------------
> Then that text was stripped off the RUL draft and placed it in the
> Use-Of-RPL-Info because it was really text on the forwarding behavior,
> which is different if some assumptions cannot be made on the external
> destination (need to encaps to the parent when it is not necessarily need=
ed
> for a RUL). That new text also fills a gap in Use-Of-RPL-Info and is
> completely localized in a  new section. the  text was moved about routing
> from the RUL draft to that section. Since it is not published yet, please
> find that text inline below:
>
>
>
> =E2=80=9C
>
>
>
> 4.1. Updates to RFC6550: Advertise External Routes with Non-Storing
>
> Mode Signaling.
>
> Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to
>
> indicate that the 6LR that generates the DAO redistributes external
>
> targets into the RPL network. An external Target is a Target that
>
> has been learned through an alternate protocol, for instance a route
>
> to a prefix that is outside the RPL domain but reachable via a 6LR.
>
> Being outside of the RPL domain, a node that is reached via an
>
> external target cannot be guaranteed to ignore the RPL artifacts and
>
> cannot be expected to process the [RFC8138] compression correctly.
>
> This means that the RPL artifacts should be contained in an IP-in-IP
>
> encapsulation that is removed by the 6LR, and that any remaining
>
> compression should be expanded by the 6LR before it forwards a packet
>
> outside the RPL domain.
>
> This specification updates RPL [RFC6550] to RECOMMEND that external
>
> targets are advertised using Non-Storing Mode signaling even in a
>
> Storing-Mode network. This way, all packets to an external target
>
> reach the Root that can encapsulate them, and the Root is informed of
>
> the address of the 6LR that terminates the IP-in-IP tunnel. In case
>
> of an external target, the Root SHOULD use the same IP-in-IP
>
> encapsulation for packets that it generates or that are originated
>
> within the RPL domain as if the packets were coming from the
>
> Internet.
>
> A RUL is a special case of external target when the target is
>
> actually a host and it is known to support a consumed Routing Header
>
> and to ignore a HbH header as prescribed by [RFC8200].. The target
>
> may have been learned through as a host route or may have been
>
> registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be
>
> avoided for Root to RUL communication if the RUL is known to process
>
> the packets as forwarded by the parent 6LR without decapsulation.
>
> In order to enable IP-in-IP all the way to a 6LN, it is beneficial
>
> that the 6LN supports decapsulating IP-in-IP, but that is not assumed
>
> by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a
>
> packet SHOULD terminate the tunnel at a parent 6LR unless it is aware
>
> that the RUL supports IP-in-IP decapsulation.
>
> A node that is reachable over an external route is not expected to
>
> support [RFC8138]. Whether a decapsulation took place or not and
>
> even when the 6LR is delivering the packet to a RUL, the 6LR that
>
> injected an external route MUST uncompress the packet before
>
> forwarding over that external route.
>
> =E2=80=9C
>
>
>
> So where are we?
>
>
>
> We need to agree on what we place in the definition of a RUL for which Us=
e-Of-RPL-Info
> presents a special behavior. Do we limit to the ground common with the RU=
L
> draft for which there is a defined RPL behavior, or do we define a new
> different thing where Use-Of-RPL-Info handles an unclear superset of the
> nodes that support the RUL draft and for which there is a defined RPL
> operation? I do not see the need because if (ever, though doubtful) a new
> draft defines the RPL operation for one version of =E2=80=9Cthat guy=E2=
=80=9D then is can
> also say whether =E2=80=9Cthat guy=E2=80=9D should be handled as a RUL or=
 as an =E2=80=9Cexternal
> destination=E2=80=9D in Use-Of-RPL-Info.
>
>
>
> Thus the proposal to that that the operation of a =E2=80=9CRUL=E2=80=9D i=
n Use-Of-RPL-Info
> is for a node that supports the RUL draft, and make the RUL draft a
> normative reference to define what that exactly mean. If we do so, MISSRE=
F
> will play its guardian role to ensure that Use-Of-RPL-Info is consistent
> with the RUL draft till the last minute because it is not published too
> hastly.
>
>
> Looking forward to your reactions,
>
>
> Ines, Pascal and Michael.
>
>
>
>
>
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--000000000000c1db6e05961edd4c
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi Rahul,<div><br></div><div>Thank you ve=
ry much for the detailed review,=C2=A0 few comments in-line.</div><div><br>=
</div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Sun, Oct 27, 2019 at 6:49 AM Rahul Jadhav &lt;<a hr=
ef=3D"mailto:nyrahul@outlook.com">nyrahul@outlook.com</a>&gt; wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Thank you for clarifying the thoughts in the mail. I am sure =
I would not have caught a drift if this would have been talked about direct=
ly (without a mail) during
 the 106-session.</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt"><br>
</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Specifically, I want to talk about the following text:=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
&quot;
<table style=3D"color:rgb(50,49,48);background-color:rgb(255,255,255)">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p style=3D"margin-top:0px;margin-bottom:0px"><span lang=3D"EN-US" style=3D=
"margin:0px;font-size:10pt;font-family:&quot;Courier New&quot;">This specif=
ication updates RPL [RFC6550] to RECOMMEND that external<u></u><u></u></spa=
n></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top:0px;margin-bottom:0px;color:rgb(50,49,48);background=
-color:rgb(255,255,255)">
</p>
<table style=3D"color:rgb(50,49,48);background-color:rgb(255,255,255)">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p style=3D"margin-top:0px;margin-bottom:0px"><span lang=3D"EN-US" style=3D=
"margin:0px;font-size:10pt;font-family:&quot;Courier New&quot;">targets are=
 advertised using Non-Storing Mode signaling even in a<u></u><u></u></span>=
</p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top:0px;margin-bottom:0px;color:rgb(50,49,48);background=
-color:rgb(255,255,255)">
</p>
<table style=3D"color:rgb(50,49,48);background-color:rgb(255,255,255)">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p style=3D"margin-top:0px;margin-bottom:0px"><span lang=3D"EN-US" style=3D=
"margin:0px;font-size:10pt;font-family:&quot;Courier New&quot;">Storing-Mod=
e network. This way, all packets to an external target<u></u><u></u></span>=
</p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top:0px;margin-bottom:0px;color:rgb(50,49,48);background=
-color:rgb(255,255,255)">
</p>
<table style=3D"color:rgb(50,49,48);background-color:rgb(255,255,255)">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p style=3D"margin-top:0px;margin-bottom:0px"><span lang=3D"EN-US" style=3D=
"margin:0px;font-size:10pt;font-family:&quot;Courier New&quot;">reach the R=
oot that can encapsulate them, and the Root is informed of<u></u><u></u></s=
pan></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p style=3D"margin-top:0px;margin-bottom:0px;color:rgb(50,49,48);background=
-color:rgb(255,255,255)">
</p>
<table style=3D"color:rgb(50,49,48);background-color:rgb(255,255,255)">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p style=3D"margin-top:0px;margin-bottom:0px"><span lang=3D"EN-US" style=3D=
"margin:0px;font-size:10pt;font-family:&quot;Courier New&quot;">the address=
 of the 6LR that terminates the IP-in-IP tunnel.</span></p>
</td>
</tr>
</tbody>
</table>
&quot;</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the
 6LRs en-route (and not only the 6LR to which the external target is attach=
ing) handle the external target in non-storing mode.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching.=C2=A0<span style=
=3D"font-family:Calibri,Helvetica,sans-serif">The
 text opens up a lot of room for interpretations and uncovered-scenarios. I=
 am apprehensive of adding such text to useofrplinfo.</span></div></div></b=
lockquote><div><br></div><div>We are going to improve that text, to avoid w=
rong interpretations, and clarifying the methodology when the traffic is di=
rected to the RUL.=C2=A0=C2=A0</div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"font-family:Calibri,Helvetica,sans-serif"><br>
</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"font-family:Calibri,Helvetica,sans-serif">Regarding followin=
g, &quot;<span style=3D"color:rgb(50,49,48);background-color:rgb(255,255,25=
5);display:inline">Do
 we limit to the ground common with the RUL draft for which there is a defi=
ned RPL behavior, or do we define a new different thing where Use-Of-RPL-In=
fo handles an unclear superset of the nodes that support the RUL draft and =
for which there is a defined RPL
 operation?<span>=C2=A0&quot;</span></span></span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt"><span style=3D"font-family:Calibri,Helvetica,sans-serif;backg=
round-color:rgb(255,255,255);display:inline"><br>
</span></span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">I certainly feel that we should limit the ground common for w=
hich there is a defined RPL behavior.</span></div></div></blockquote><div><=
br></div><div>Ok,=C2=A0 thank you.=C2=A0</div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex"><div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt"><br>
</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">In general, unaware-leaves seem to have a much broader impact=
 than I initially thought.</span></div></div></blockquote><div><br></div><d=
iv>Agree :)</div><div><br></div><div>Best, Ines.=C2=A0</div><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt"><br>
</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Regards,</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Rahul</span></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">
<div style=3D"margin:0px;font-size:12pt;font-family:Calibri,Helvetica,sans-=
serif">
<br>
</div>
</span></div>
<div id=3D"gmail-m_2219078715442288037appendonsend"></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_2219078715442288037divRplyFwdMsg" dir=3D"ltr">Then that =
text was stripped off the RUL draft and placed it in the Use-Of-RPL-Info be=
cause it was really text on the forwarding behavior, which is different if =
some assumptions cannot be made on the external destination (need
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a=C2=A0 new section. the=C2=A0 text was moved about routing from the RUL =
draft to that section. Since it is not published
 yet, please find that text inline below:<br>
</div>
<div>
<div dir=3D"ltr">
<div>
<p><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p><span lang=3D"EN-US">=E2=80=9C<u></u><u></u></span></p>
<p><span lang=3D"EN-US" style=3D"font-size:10pt"><u></u>=C2=A0<u></u></span=
></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">4.1. Updates to RFC6550: Advertise External Routes with Non-Stori=
ng<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Mode =
Signaling.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">Section 6.7.8. of [RFC6550] introduces the &#39;E&#39; flag that =
is set to<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">indicate that the 6LR that generates the DAO redistributes extern=
al<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">targets into the RPL network. An external Target is a Target that=
<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">has been learned through an alternate protocol, for instance a ro=
ute<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">to a prefix that is outside the RPL domain but reachable via a 6L=
R.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">Being outside of the RPL domain, a node that is reached via an<u>=
</u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">external target cannot be guaranteed to ignore the RPL artifacts =
and<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">cannot be expected to process the [RFC8138] compression correctly=
.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">This means that the RPL artifacts should be contained in an IP-in=
-IP<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">encapsulation that is removed by the 6LR, and that any remaining<=
u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">compression should be expanded by the 6LR before it forwards a pa=
cket<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">outsi=
de the RPL domain.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">This specification updates RPL [RFC6550] to RECOMMEND that extern=
al<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">targets are advertised using Non-Storing Mode signaling even in a=
<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">Storing-Mode network. This way, all packets to an external target=
<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">reach the Root that can encapsulate them, and the Root is informe=
d of<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">the address of the 6LR that terminates the IP-in-IP tunnel.=C2=A0=
</span><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">I=
n case<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">of an external target, the Root SHOULD use the same IP-in-IP<u></=
u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">encapsulation for packets that it generates or that are originate=
d<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">within the RPL domain as if the packets were coming from the<u></=
u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Inter=
net.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">A RUL is a special case of external target when the target is<u><=
/u><u></u></span></p>
</td>
</tr>
<tr>
<td></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">actually a host and it is known to support a consumed Routing Hea=
der<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">and to ignore a HbH header as prescribed by [RFC8200]..=C2=A0</sp=
an><span style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">The t=
arget<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">may have been learned through as a host route or may have been<u>=
</u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY=
 be<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">avoided for Root to RUL communication if the RUL is known to proc=
ess<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">the packets as forwarded by the parent 6LR without decapsulation.=
<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">In order to enable IP-in-IP all the way to a 6LN, it is beneficia=
l<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">that the 6LN supports decapsulating IP-in-IP, but that is not ass=
umed<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a<u=
></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">packet SHOULD terminate the tunnel at a parent 6LR unless it is a=
ware<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">that the RUL supports IP-in-IP decapsulation.<u></u><u></u></span=
></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">A node that is reachable over an external route is not expected t=
o<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">support [RFC8138]. Whether a decapsulation took place or not and<=
u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">even when the 6LR is delivering the packet to a RUL, the 6LR that=
<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">injected an external route MUST uncompress the packet before<u></=
u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;">forwarding over that external route.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p><span lang=3D"EN-US">=E2=80=9C<u></u><u></u></span></p>
<p><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p><span lang=3D"EN-US">So where are we?<u></u><u></u></span></p>
<p><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p><span lang=3D"EN-US">We need to agree on what we place in the definition=
 of a RUL for which=C2=A0</span><span lang=3D"EN-US">Use-Of-RPL-Info presen=
ts a special behavior. Do we limit to the ground common with the RUL draft =
for which there is a
 defined RPL behavior, or do we define a new different thing where Use-Of-R=
PL-Info handles an unclear superset of the nodes that support the RUL draft=
 and for which there is a defined RPL operation? I do not see the need beca=
use if (ever, though doubtful) a
 new draft defines the RPL operation for one version of =E2=80=9Cthat guy=
=E2=80=9D then is can also say whether =E2=80=9Cthat guy=E2=80=9D should be=
 handled as a RUL or as an =E2=80=9Cexternal destination=E2=80=9D</span><sp=
an lang=3D"EN-US">=C2=A0in=C2=A0</span><span lang=3D"EN-US">Use-Of-RPL-Info=
.<u></u><u></u></span></p>
<p><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p><span lang=3D"EN-US">Thus the proposal to that that the operation of a =
=E2=80=9CRUL=E2=80=9D in Use-Of-RPL-Info is for a node that supports the RU=
L draft, and make the RUL draft a normative reference to define what that e=
xactly mean. If we do so, MISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.<u></u><u></u></span></p>
<p><span lang=3D"EN-US"><br>
</span></p>
<p><span lang=3D"EN-US">Looking forward to your reactions,</span></p>
<p><span lang=3D"EN-US"><br>
</span></p>
<p><span lang=3D"EN-US">Ines, Pascal and Michael.</span></p>
<p><span lang=3D"EN-US"><br>
</span></p>
<p><span lang=3D"EN-US"><br>
</span></p>
<p><span lang=3D"EN-US"><u></u>=C2=A0</span></p>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
CC: Michael Richardson <mcr+ietf@sandelman.ca>
Thread-Topic: [Roll] Making RUL draft normative reference in useofrplinfo
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Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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--_000_MN2PR11MB35654FBC3D12467D38852006D8600MN2PR11MB3565namp_
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Hello Rahul, all

From: Roll <roll-bounces@ietf.org> On Behalf Of Rahul Jadhav
Sent: dimanche 27 octobre 2019 05:48
To: roll <roll@ietf.org>
Cc: Michael Richardson <mcr+ietf@sandelman.ca>
Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo

Thank you for clarifying the thoughts in the mail. I am sure I would not ha=
ve caught a drift if this would have been talked about directly (without a =
mail) during the 106-session.

Specifically, I want to talk about the following text:

"

This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel.
"
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h the external target is attaching) handle the external target in non-stori=
ng mode.
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching. The text opens u=
p a lot of room for interpretations and uncovered-scenarios. I am apprehens=
ive of adding such text to useofrplinfo.


<Pascal>
( : Misunderstanding warning : )

The 'signaling' discussed in that text is the control plane, more specifica=
lly the DAO that is sent by the 6LR directly to the root as opposed to perc=
olating child to parent like other internal DAO message in storing mode. In=
 the data plane you have IP in IP to the 6LR and no RH, so the intermediate=
 routers just see a packet to the 6LR and need not worry whether there's an=
 IP packet inside.

We certainly need to clarify. What about:

"

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode DAO messaging even in a

Storing-Mode network. This way, external routes are not advertised within

the DODAG and all packets to an external target reach the Root like normal

non-storing mode traffic. The Non-Storing Mode DAO informs the Root of the

address of the 6LR that injects the external route, and the root uses IP-in=
-IP

encapsulation to that 6LR, which terminates the IP-in-IP tunnel and forward=
s

the original packet outside the RPL domain.

"
</Pascal>




Regarding following, "Do we limit to the ground common with the RUL draft f=
or which there is a defined RPL behavior, or do we define a new different t=
hing where Use-Of-RPL-Info handles an unclear superset of the nodes that su=
pport the RUL draft and for which there is a defined RPL operation? "

I certainly feel that we should limit the ground common for which there is =
a defined RPL behavior.

In general, unaware-leaves seem to have a much broader impact than I initia=
lly thought.


<Pascal>
Cool, we agree : )
</Pascal>

Regards,
Rahul


________________________________
Then that text was stripped off the RUL draft and placed it in the Use-Of-R=
PL-Info because it was really text on the forwarding behavior, which is dif=
ferent if some assumptions cannot be made on the external destination (need=
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a  new section. the  text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet, please find that text inline be=
low:



"



4.1. Updates to RFC6550: Advertise External Routes with Non-Storing


Mode Signaling.



Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to


indicate that the 6LR that generates the DAO redistributes external


targets into the RPL network. An external Target is a Target that


has been learned through an alternate protocol, for instance a route


to a prefix that is outside the RPL domain but reachable via a 6LR.


Being outside of the RPL domain, a node that is reached via an


external target cannot be guaranteed to ignore the RPL artifacts and


cannot be expected to process the [RFC8138] compression correctly.


This means that the RPL artifacts should be contained in an IP-in-IP


encapsulation that is removed by the 6LR, and that any remaining


compression should be expanded by the 6LR before it forwards a packet


outside the RPL domain.



This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel. In case


of an external target, the Root SHOULD use the same IP-in-IP


encapsulation for packets that it generates or that are originated


within the RPL domain as if the packets were coming from the


Internet.



A RUL is a special case of external target when the target is


actually a host and it is known to support a consumed Routing Header


and to ignore a HbH header as prescribed by [RFC8200].. The target


may have been learned through as a host route or may have been


registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be


avoided for Root to RUL communication if the RUL is known to process


the packets as forwarded by the parent 6LR without decapsulation.



In order to enable IP-in-IP all the way to a 6LN, it is beneficial


that the 6LN supports decapsulating IP-in-IP, but that is not assumed


by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a


packet SHOULD terminate the tunnel at a parent 6LR unless it is aware


that the RUL supports IP-in-IP decapsulation.



A node that is reachable over an external route is not expected to


support [RFC8138]. Whether a decapsulation took place or not and


even when the 6LR is delivering the packet to a RUL, the 6LR that


injected an external route MUST uncompress the packet before


forwarding over that external route.

"



So where are we?



We need to agree on what we place in the definition of a RUL for which Use-=
Of-RPL-Info presents a special behavior. Do we limit to the ground common w=
ith the RUL draft for which there is a defined RPL behavior, or do we defin=
e a new different thing where Use-Of-RPL-Info handles an unclear superset o=
f the nodes that support the RUL draft and for which there is a defined RPL=
 operation? I do not see the need because if (ever, though doubtful) a new =
draft defines the RPL operation for one version of "that guy" then is can a=
lso say whether "that guy" should be handled as a RUL or as an "external de=
stination" in Use-Of-RPL-Info.



Thus the proposal to that that the operation of a "RUL" in Use-Of-RPL-Info =
is for a node that supports the RUL draft, and make the RUL draft a normati=
ve reference to define what that exactly mean. If we do so, MISSREF will pl=
ay its guardian role to ensure that Use-Of-RPL-Info is consistent with the =
RUL draft till the last minute because it is not published too hastly.



Looking forward to your reactions,



Ines, Pascal and Michael.









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<body lang=3D"FR" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Hello Rah=
ul, all<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;roll-bounces@ietf.org&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> dimanche 27 octobre 2019 05:48<br>
<b>To:</b> roll &lt;roll@ietf.org&gt;<br>
<b>Cc:</b> Michael Richardson &lt;mcr&#43;ietf@sandelman.ca&gt;<br>
<b>Subject:</b> Re: [Roll] Making RUL draft normative reference in useofrpl=
info<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Thank y=
ou for clarifying the thoughts in the mail. I am sure I would not have caug=
ht a drift if this would have been talked about directly (without a mail) d=
uring the 106-session.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Specifi=
cally, I want to talk about the following text:&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot; =
<o:p></o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">This specification updates RPL [RFC6550] to RECOM=
MEND that external</span><span style=3D"font-family:&quot;Segoe UI&quot;,sa=
ns-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">targets are advertised using Non-Storing Mode sig=
naling even in a</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">Storing-Mode network. This way, all packets to an=
 external target</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">reach the Root that can encapsulate them, and the=
 Root is informed of</span><span style=3D"font-family:&quot;Segoe UI&quot;,=
sans-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">the address of the 6LR that terminates the IP-in-=
IP tunnel.</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans-serif=
;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot;<=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I under=
stand the reason why we need IP-in-IP tunnel terminating at the 6LR adverti=
sing the external-target. But when we say that only external targets are ad=
vertised using non-storing mode signaling
 even in a storing MOP, what we are asking is that all the 6LRs en-route (a=
nd not only the 6LR to which the external target is attaching) handle the e=
xternal target in non-storing mode.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">This me=
ans that all 6LRs in the network need to be capable of non-storing and stor=
ing mode even though the MOP advertised was for storing MOP only. This has =
implications for behaviour during parent
 switching.&nbsp;The text opens up a lot of room for interpretations and un=
covered-scenarios. I am apprehensive of adding such text to useofrplinfo.<o=
:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt; <o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">( : Misunderstanding warning : =
) <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The &#8216;signaling&#8217; dis=
cussed in that text is the control plane, more specifically the DAO that is=
 sent by the 6LR directly to the root as opposed to percolating child to pa=
rent like other internal DAO message in storing
 mode. In the data plane you have IP in IP to the 6LR and no RH, so the int=
ermediate routers just see a packet to the 6LR and need not worry whether t=
here&#8217;s an IP packet inside.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We certainly need to clarify. W=
hat about:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">This specifica=
tion updates RPL [RFC6550] to RECOMMEND that external<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">targets are ad=
vertised using Non-Storing Mode DAO messaging even in a<o:p></o:p></span></=
p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">Storing-Mode n=
etwork. This way, external routes are not advertised within<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">the DODAG and =
all packets to an external target reach the Root like normal<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span style=3D"font-siz=
e:10.0pt;font-family:&quot;Courier New&quot;">non-storing mode traffic.
</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">The Non-Storing Mode DAO informs the Root of the<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">address of the=
 6LR that injects the external route, and the root uses IP-in-IP<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">encapsulation to that 6LR, which terminates=
 the IP-in-IP tunnel and forwards<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:9.85pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">the original packet outside the RPL domain<=
/span><span lang=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Regardi=
ng following, &quot;</span><span style=3D"font-size:12.0pt;font-family:&quo=
t;Segoe UI&quot;,sans-serif;color:#323130;background:white">Do we limit to =
the ground common with the RUL draft for which there
 is a defined RPL behavior, or do we define a new different thing where Use=
-Of-RPL-Info handles an unclear superset of the nodes that support the RUL =
draft and for which there is a defined RPL operation?&nbsp;&quot;</span><sp=
an style=3D"font-size:12.0pt;color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I certa=
inly feel that we should limit the ground common for which there is a defin=
ed RPL behavior.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">In gene=
ral, unaware-leaves seem to have a much broader impact than I initially tho=
ught.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt;<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Cool, we agree&nbsp;: ) <o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt"><o:p=
>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt;color=
:black">Regards,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Rahul<o=
:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal">Then that text was stripped off the RUL draft and pl=
aced it in the Use-Of-RPL-Info because it was really text on the forwarding=
 behavior, which is different if some assumptions cannot be made on the ext=
ernal destination (need to encaps
 to the parent when it is not necessarily needed for a RUL). That new text =
also fills a gap in Use-Of-RPL-Info and is completely localized in a&nbsp; =
new section. the&nbsp; text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet,
 please find that text inline below:<o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt">&nb=
sp;</span><o:p></o:p></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">4.1. Updates to RFC6550: Advertise Externa=
l Routes with Non-Storing</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Mode Signaling.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Section 6.7.8. of [RFC6550] introduces the=
 'E' flag that is set to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">indicate that the 6LR that generates the D=
AO redistributes external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets into the RPL network. An external =
Target is a Target that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">has been learned through an alternate prot=
ocol, for instance a route</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">to a prefix that is outside the RPL domain=
 but reachable via a 6LR.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Being outside of the RPL domain, a node th=
at is reached via an</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">external target cannot be guaranteed to ig=
nore the RPL artifacts and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">cannot be expected to process the [RFC8138=
] compression correctly.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This means that the RPL artifacts should b=
e contained in an IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation that is removed by the 6LR, =
and that any remaining</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">compression should be expanded by the 6LR =
before it forwards a packet</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">outside the RPL domain.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This specification updates RPL [RFC6550] t=
o RECOMMEND that external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets are advertised using Non-Storing M=
ode signaling even in a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Storing-Mode network. This way, all packet=
s to an external target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">reach the Root that can encapsulate them, =
and the Root is informed of</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the address of the 6LR that terminates the=
 IP-in-IP tunnel.&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&=
quot;Courier New&quot;">In case</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">of an external target, the Root SHOULD use=
 the same IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation for packets that it generate=
s or that are originated</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">within the RPL domain as if the packets we=
re coming from the</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Internet.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A RUL is a special case of external target=
 when the target is</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:0cm 0cm 0cm 0cm"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">actually a host and it is known to support=
 a consumed Routing Header</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">and to ignore a HbH header as prescribed b=
y [RFC8200]..&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&quot=
;Courier New&quot;">The target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">may have been learned through as a host ro=
ute or may have been</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">registered to the 6LR using [RFC8505]. IP-=
in-IP encapsulation MAY be</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">avoided for Root to RUL communication if t=
he RUL is known to process</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the packets as forwarded by the parent 6LR=
 without decapsulation.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">In order to enable IP-in-IP all the way to=
 a 6LN, it is beneficial</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the 6LN supports decapsulating IP-in-=
IP, but that is not assumed</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">by [RFC8504]. If the 6LN is a RUL, the Roo=
t that encapsulates a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">packet SHOULD terminate the tunnel at a pa=
rent 6LR unless it is aware</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the RUL supports IP-in-IP decapsulati=
on.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A node that is reachable over an external =
route is not expected to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">support [RFC8138]. Whether a decapsulation=
 took place or not and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">even when the 6LR is delivering the packet=
 to a RUL, the 6LR that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">injected an external route MUST uncompress=
 the packet before</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">forwarding over that external route.</span=
><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">So where are we?</span><o:p></=
o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">We need to agree on what we pl=
ace in the definition of a RUL for which&nbsp;Use-Of-RPL-Info presents a sp=
ecial behavior. Do we limit to the ground common with the RUL draft for whi=
ch there is a defined RPL behavior, or do
 we define a new different thing where Use-Of-RPL-Info handles an unclear s=
uperset of the nodes that support the RUL draft and for which there is a de=
fined RPL operation? I do not see the need because if (ever, though doubtfu=
l) a new draft defines the RPL operation
 for one version of &#8220;that guy&#8221; then is can also say whether &#8=
220;that guy&#8221; should be handled as a RUL or as an &#8220;external des=
tination&#8221;&nbsp;in&nbsp;Use-Of-RPL-Info.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Thus the proposal to that that=
 the operation of a &#8220;RUL&#8221; in Use-Of-RPL-Info is for a node that=
 supports the RUL draft, and make the RUL draft a normative reference to de=
fine what that exactly mean. If we do so, MISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Looking forward to your reacti=
ons,</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Ines, Pascal and Michael.</spa=
n><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

--_000_MN2PR11MB35654FBC3D12467D38852006D8600MN2PR11MB3565namp_--


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Hello Rahul,

thank you so much for these comments and sorry for taking so long to answer.

I have some responses inline.

On Fri, Sep 27, 2019 at 3:27 AM Rahul Jadhav <nyrahul@outlook.com> wrote:

> Hello, Authors of NSA-extension,
>
> I agreed to review the document in IETF105 and would like to provide my
> comments.
>
> But before going into details, will it be possible to upload the XML
> version of the draft to the datatracker? Unlike other drafts, I do not see
> the XML form of this draft! Also, it would be much efficient if we sync
> using GitHub repo (where I can send PR for you to review).
>
I have just created a new repository as part of the ROLL WG github account
called* draft-ietf-roll-nsa-extension
<https://github.com/roll-wg/draft-ietf-roll-nsa-extension>*.
It contains the up-to-date draft XML file. Feel free to post PRs and we
will quickly handle them.



> My primary point of discussion would be the way MRHoF is handled in the
> draft.
> The current text/OF described in the document seems insufficient.
> MRHOF makes sense only for metrics that are additive in nature. The CAOFs
> presented in the document are not additive, and the text simply tries to
> somehow fit MRHOF in the context.
>
So I think maybe this is probably a misunderstanding.
The draft proposes two things:
1. An extension to the DIO DAGMC NSA object to include a subset of the
sorted parent set (PS) of a node.
2. A set of Objective Functions, modeled around MRHOF, which take into
account the PS in DIO messages to aid in alternative parent selection.
The key here is that the document *requires* the container DIO DAGMC NSA
object to be a *constraint, not a metric.*
The basic idea is this, have an OF that functions identically to MRHOF,
using any additive metric to calculate the rank of parents in the parent
set, *but filter out potential parent in the parent set for use as
alternative parent using the DIO DAGMC NSA PS information.*
So, the only-additive-metrics requirement in MRHOF is not disturbed at all,
since for both preferred parent and alternative parent, the rank
calculation is the same as MRHOF.
The extra constraint is only for filtering out alternative parents.

Does this make sense?
Maybe we could explain it in a clearer way?

In the text we say *"In general, these OFs extend MRHOF by specifying how
an AP is selected. The selection of the PP is kept the same as in MRHOF."*
Maybe we should also note that the rank calculation is not changed for both
PP and AP?


> The draft reserves different OCPs for different Common Ancestor Policies
> (Strict, Medium, Relaxed). I thought that the policies are local in nature
> and different nodes in the same instance could use different policies. If
> we use different OCPs, then this is not possible. It is impractical to
> assume that certain policies (such as CA Strict policy) can be enforced
> using OCP.
>
You are right, and we thought about this issue. On the one hand different
OCPs mean exactly one one per RPL Instance, while the same means that you
have no idea what version (Strict, Medium, Relaxed) your neighbors are
running, in case you *do* care.
The policies are indeed local in nature, so in this case I assume the
correct thing to do would be to reserve just one OCP, and if nodes want to
include the version of CAOF used that can do it in another DIO field or
using another mechanism (e.g. statically pre-configured).
We will change the draft to only request one OCP.


>   The promiscuous overhearing assumes different security settings. I read
> the refed draft in 6tisch and it explains the assumptions, however, I
> believe it is better we explain the security implication of promiscuous
> overhearing in the security considerations in this draft.
>
I have no problem with this. Avoiding too much duplication of text was my
general guiding principle, so where possible we pointed to other sources.
This, incidentally, is also why we opted to use MRHOF as a base upon which
to build the CAOFs, instead of creating a full description.


Again, thanks so much Rahul for the comments.

We eagerly look forward to your reply.

Best,
Aris

--000000000000ae46460596219484
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><div>Hello Rahul,</div><div><br></div><di=
v>thank you so much for these comments and sorry for taking so long to answ=
er.</div><div><br></div><div>I have some responses inline.<br></div></div><=
br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri,=
 Sep 27, 2019 at 3:27 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook=
.com">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20=
4,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Hello, Authors of NSA-extension,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I agreed to review the document in IETF105 and would like to provide my com=
ments.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
But before going into details, will<span style=3D"color:rgb(0,0,0);font-fam=
ily:Calibri,Helvetica,sans-serif;font-size:12pt">=C2=A0it be possible to up=
load the XML version of the draft to the datatracker? Unlike other drafts, =
I do not see the XML form of
 this draft! Also, i</span><span style=3D"color:rgb(0,0,0);font-family:Cali=
bri,Helvetica,sans-serif;font-size:12pt">t would be much efficient if we sy=
nc using GitHub repo (where I can send PR for you to review).</span></div><=
/div></div></blockquote><div>I have just created a new repository as part o=
f the ROLL WG github account called<strong><a href=3D"https://github.com/ro=
ll-wg/draft-ietf-roll-nsa-extension"> draft-ietf-roll-nsa-extension</a></st=
rong>.</div><div>It contains the up-to-date draft XML file. Feel free to po=
st PRs and we will quickly handle them.<br></div><div><br></div><div>=C2=A0=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><d=
iv style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:r=
gb(0,0,0)">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">

</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
My primary point of discussion would be the way MRHoF is handled in the dra=
ft.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The current text/OF described in the document seems insufficient.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
MRHOF makes sense only for metrics that are additive in nature. The CAOFs p=
resented in the document are not additive, and the text simply tries to som=
ehow fit MRHOF in the context.</div></div></div></blockquote><div>So I thin=
k maybe this is probably a misunderstanding.</div><div>The draft proposes t=
wo things:</div><div>1. An extension to the DIO DAGMC NSA object to include=
 a subset of the sorted parent set (PS) of a node.</div><div>2. A set of Ob=
jective Functions, modeled around MRHOF, which take into account the PS in =
DIO messages to aid in alternative parent selection.</div><div>The key here=
 is that the document <b>requires</b> the container  DIO DAGMC NSA object t=
o be a <b>constraint, not a metric.</b></div><div>The basic idea is this, h=
ave an OF that functions identically to MRHOF, using any additive metric to=
 calculate the rank of parents in the parent set, <b>but filter out potenti=
al parent in the parent set for use as alternative parent using the  DIO DA=
GMC NSA PS information.</b></div><div>So, the only-additive-metrics require=
ment in MRHOF is not disturbed at all, since for both preferred parent and =
alternative parent, the rank calculation is the same as MRHOF.</div><div>Th=
e extra constraint is only for filtering out alternative parents.<br></div>=
<div><br></div><div>Does this make sense?</div><div>Maybe we could explain =
it in a clearer way?</div><div><br></div><div>In the text we say <i>&quot;I=
n general, these OFs extend MRHOF by specifying how an AP is selected. The =
selection of the PP is kept the same as in MRHOF.&quot;</i></div><div>Maybe=
 we should also note that the rank calculation is not changed for both PP a=
nd AP?<br></div><div><table class=3D"gmail-highlight gmail-tab-size gmail-j=
s-file-line-container"><tbody><tr><td id=3D"gmail-LC238" class=3D"gmail-blo=
b-code gmail-blob-code-inner gmail-js-file-line"></td></tr><tr></tr></tbody=
></table></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-lef=
t:1ex"><div dir=3D"ltr"><div style=3D"font-family:Calibri,Helvetica,sans-se=
rif;font-size:12pt;color:rgb(0,0,0)">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">

</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
The draft reserves different OCPs for different Common Ancestor Policies (S=
trict, Medium, Relaxed). I thought that the policies are local in nature an=
d different nodes in the same instance could use different policies. If we =
use different OCPs, then this is
 not possible. It is impractical to assume that certain policies (such as C=
A Strict policy) can be enforced using OCP.</div></div></div></blockquote><=
div>You are right, and we thought about this issue. On the one hand differe=
nt OCPs mean exactly one one per RPL Instance, while the same means that yo=
u have no idea what version (Strict, Medium, Relaxed) your neighbors are ru=
nning, in case you <i>do</i> care.<br></div><div>The policies are indeed lo=
cal in nature, so in this case I assume the correct thing to do would be to=
 reserve just one OCP, and if nodes want to include the version of CAOF use=
d that can do it in another DIO field or using another mechanism (e.g. stat=
ically pre-configured).</div><div>We will change the draft to only request =
one OCP.<br></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"ltr"><div style=3D"font-family:Calibri,Helvetica,san=
s-serif;font-size:12pt;color:rgb(0,0,0)">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">=C2=A0
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">The promiscuous overhearing assumes different security settin=
gs. I read the refed draft in 6tisch and it explains the assumptions, howev=
er, I believe it is better
 we explain the security implication of promiscuous overhearing in the secu=
rity considerations in this draft.</span></div></div></div></blockquote><di=
v>I have no problem with this. Avoiding too much duplication of text was my=
 general guiding principle, so where possible we pointed to other sources.<=
/div><div>This, incidentally, is also why we opted to use MRHOF as a base u=
pon which to build the CAOFs, instead of creating a full description.<br></=
div><div>=C2=A0</div><div><br></div><div>Again, thanks so much Rahul for th=
e comments.</div><div><br></div><div>We eagerly look forward to your reply.=
</div><div><br></div><div>Best,</div><div>Aris<br></div></div></div>

--000000000000ae46460596219484--


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Subject: [Roll] I-D Action: draft-ietf-roll-efficient-npdao-17.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Routing Over Low power and Lossy networks WG of the IETF.

        Title           : Efficient Route Invalidation
        Authors         : Rahul Arvind Jadhav
                          Pascal Thubert
                          Rabi Narayan Sahoo
                          Zhen Cao
	Filename        : draft-ietf-roll-efficient-npdao-17.txt
	Pages           : 23
	Date            : 2019-10-30

Abstract:
   This document explains the problems associated with the current use
   of NPDAO messaging and also discusses the requirements for an
   optimized route invalidation messaging scheme.  Further a new
   proactive route invalidation message called as "Destination Cleanup
   Object" (DCO) is specified which fulfills requirements of an
   optimized route invalidation messaging.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-roll-efficient-npdao/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-roll-efficient-npdao-17
https://datatracker.ietf.org/doc/html/draft-ietf-roll-efficient-npdao-17

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-efficient-npdao-17


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Subject: [Roll] draft-ietf-roll-unaware-leaves (WAS: AD Review of draft-ietf-roll-efficient-npdao-16)
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--000000000000c0368f0596229672
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Just for clarity.

The changes proposed here are for draft-ietf-roll-unaware-leaves
(not draft-ietf-roll-efficient-npdao).  I changed the subject to reflect
that.

Alvaro.

On October 30, 2019 at 6:37:15 AM, Pascal Thubert (pthubert) (
pthubert@cisco.com) wrote:

Dear all :



There is a need in the RUL draft to carry a 6LoWPAN ND status inside a RPL
status so we can avoid duplicating DAR/DAC and DAO/DAO-ACK through the
network. This also allows async communication down the DODAG through DCO
(efficient NPDAO).



Alvaro pointed out that mapping one  status in the other as proposed so far
was not too clean. The change proposed herein addresses this concern. The
change would be adding another control bit in the RPL status and
formalizing the format as follows:



7.  Updated RPL Status



   The RPL Status is defined in section 6.5.1. of [RFC6550] for use in

   the DAO-Ack message and values are assigned as follows:



                  +---------+---------------------------+

                  | Range   | Meaning                   |

                  +=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+

                  | 0       | RFC 6550                  |

                  +---------+---------------------------+

                  | 1-127   | Not an outright rejection |

                  +---------+---------------------------+

                  | 128-255 | Rejection                 |

                  +---------+---------------------------+



                      Table 1: RPL Status per RFC 6550



   This specification extends the scope of the RPL status to be used in

   RPL DCO messages.  Furthermore, this specification enables to carry

   the status values defined for use in the IPv6 ND Extended Address

   Registration Option (EARO) and listed in table 1 of [RFC8505].  Only

   EARO status values in the range 0-63 can be transported.



   The resulting RPL status is as follows:



                        0 1 2 3 4 5 6 7

                      +-+-+-+-+-+-+-+-+

                       |E|A|  Value    |

                       +-+-+-+-+-+-+-+-+



                        Figure 2: RPL status Format



   RPL Status subfields:



   E:  1-bit flag.  Set to indicate a rejection.  When not set, a value

      of 0 indicates success and other values indicate an non-outright-

      rejection as per RFC 6550.



   A:  1-bit flag.  Indicates the type of the status value.



   Status Value:  6-bit unsigned integer.  If the 'A' flag is set this

      field transports a status value defined for IPv6 ND EARO.  When

      the 'A' flag is reset, the status value is defined in a RPL

      extension



   When building a DCO message upon an IPv6 ND NA or DAC message, the

   root MUST place the ARO status unchanged in a mapped DCO with the 'A'

   bit set.  Conversely the 6LR MUST place the ARO status unchanged in

   the NA(EARO) that is built upon a DCO with the 'A' bit set.



Comments welcome (and urgent!). Unless I see opposition I plan to publish
before cutoff so we can discuss it at IETF 106.



All the best;



Pascal



*From:* Alvaro Retana <aretana.ietf@gmail.com>
*Sent:* mardi 29 octobre 2019 23:10
*To:* Pascal Thubert (pthubert) <pthubert@cisco.com>;
draft-ietf-roll-efficient-npdao@ietf.org
*Cc:* roll-chairs@ietf.org; roll <roll@ietf.org>; Peter van der Stok <
consultancy@vanderstok.org>
*Subject:* RE: AD Review of draft-ietf-roll-efficient-npdao-16



Hi!



I=E2=80=99m fine with the changes proposed to draft-ietf-roll-efficient-npd=
ao.



I want to see the WG reach consensus on the changes related
to draft-ietf-roll-unaware-leaves.



Thanks!



Alvaro.



On October 29, 2019 at 5:52:13 AM, Pascal Thubert (pthubert) (
pthubert@cisco.com) wrote:

 If you agree with the proposed line above I'll make editions and come back
to you for more comments and/or approval.

--000000000000c0368f0596229672
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Content-Transfer-Encoding: quoted-printable

<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"font-family:Helve=
tica,Arial;font-size:13px">Just for clarity.</div><div style=3D"font-family=
:Helvetica,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvet=
ica,Arial;font-size:13px">The changes proposed here are for=C2=A0draft-ietf=
-roll-unaware-leaves (not=C2=A0draft-ietf-roll-efficient-npdao).=C2=A0 I ch=
anged the subject to reflect that.</div><div style=3D"font-family:Helvetica=
,Arial;font-size:13px"><br></div><div style=3D"font-family:Helvetica,Arial;=
font-size:13px">Alvaro.</div> <br><p class=3D"airmail_on">On October 30, 20=
19 at 6:37:15 AM, Pascal Thubert (pthubert) (<a href=3D"mailto:pthubert@cis=
co.com">pthubert@cisco.com</a>) wrote:</p> <blockquote type=3D"cite" class=
=3D"clean_bq"><span><div lang=3D"FR" link=3D"blue" vlink=3D"purple"><div></=
div><div>






<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Dear all=
=C2=A0:</span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">=C2=A0</s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">There is a need in the RUL draft to carry a 6LoWPAN ND status inside =
a RPL status so we can avoid duplicating DAR/DAC and DAO/DAO-ACK through th=
e network. This also allows async communication
 down the DODAG through DCO (efficient NPDAO).</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Alvaro pointed out that mapping one =C2=A0status in the other as prop=
osed so far was not too clean. The change proposed herein addresses this co=
ncern. The change would be adding another control
 bit in the RPL status and formalizing the format as follows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">7.=C2=A0 Updated RPL Status</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 The RPL Status is defined in s=
ection 6.5.1. of [RFC6550] for use in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 the DAO-Ack message and values=
 are assigned as follows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+---=
------------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Range=C2=A0=
=C2=A0 | Meaning=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +=3D=3D=3D=3D=
=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 | RFC 6550=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+---=
------------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 1-127=C2=A0=
=C2=A0 | Not an outright rejection |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+---=
------------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| 128-255 | Rej=
ection=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+---=
------------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 Table 1: RPL Status per RFC 6550</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 This specification extends the=
 scope of the RPL status to be used in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 RPL DCO messages.=C2=A0 Furthe=
rmore, this specification enables to carry</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 the status values defined for =
use in the IPv6 ND Extended Address</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 Registration Option (EARO) and=
 listed in table 1 of [RFC8505].=C2=A0 Only</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 EARO status values in the rang=
e 0-63 can be transported.=C2=A0
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 The resulting RPL status is as=
 follows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A00 1 2 3 4 5 6 7</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0+-+-+-+-+-+-+-+-+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0|E|A|=C2=A0 Value=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0+-+-+-+-+-+-+-+-+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 Figure 2: RPL status Format</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 RPL Status subfields:</span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 E:=C2=A0 1-bit flag.=C2=A0 Set=
 to indicate a rejection.=C2=A0 When not set, a value</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 of 0 indicat=
es success and other values indicate an non-outright-</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 rejection as=
 per RFC 6550.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 A:=C2=A0 1-bit flag.=C2=A0 Ind=
icates the type of the status value.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 Status Value:=C2=A0 6-bit unsi=
gned integer.=C2=A0 If the &#39;A&#39; flag is set this</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 field transp=
orts a status value defined for IPv6 ND EARO.=C2=A0 When</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 the &#39;A&#=
39; flag is reset, the status value is defined in a RPL</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 extension</s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 When building a DCO message up=
on an IPv6 ND NA or DAC message, the</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 root MUST place the ARO status=
 unchanged in a mapped DCO with the &#39;A&#39;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 bit set.=C2=A0 Conversely the =
6LR MUST place the ARO status unchanged in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">=C2=A0=C2=A0 the NA(EARO) that is built upo=
n a DCO with the &#39;A&#39; bit set.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Comments welcome (and urgent!). Unless I see opposition I plan to pub=
lish before cutoff so we can discuss it at IETF 106.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">All the best;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Pascal</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">=C2=A0</span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Alvaro Retana &lt;<a href=3D"mailto:aretana.ietf@gmail.com">are=
tana.ietf@gmail.com</a>&gt;
<br>
<b>Sent:</b> mardi 29 octobre 2019 23:10<br>
<b>To:</b> Pascal Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.c=
om">pthubert@cisco.com</a>&gt;; <a href=3D"mailto:draft-ietf-roll-efficient=
-npdao@ietf.org">draft-ietf-roll-efficient-npdao@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:roll-chairs@ietf.org">roll-chairs@ietf.org</a>=
; roll &lt;<a href=3D"mailto:roll@ietf.org">roll@ietf.org</a>&gt;; Peter va=
n der Stok &lt;<a href=3D"mailto:consultancy@vanderstok.org">consultancy@va=
nderstok.org</a>&gt;<br>
<b>Subject:</b> RE: AD Review of draft-ietf-roll-efficient-npdao-16</span><=
/p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">Hi!</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">I=E2=80=99m fine with the changes proposed to=C2=
=A0draft-ietf-roll-efficient-npdao.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">I want to see the WG reach consensus on the chang=
es related to=C2=A0draft-ietf-roll-unaware-leaves.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">Thanks!</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">Alvaro.</span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">=C2=A0</span></p>
<p class=3D"airmailon"><span style=3D"font-size:10.0pt;font-family:&quot;He=
lvetica&quot;,sans-serif">On October 29, 2019 at 5:52:13 AM, Pascal Thubert=
 (pthubert) (<a href=3D"mailto:pthubert@cisco.com">pthubert@cisco.com</a>) =
wrote:</span></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal"><span class=3D"apple-converted-space"><span style=3D=
"font-size:10.5pt;font-family:&quot;Helvetica Neue&quot;;color:black;backgr=
ound:white">=C2=A0</span></span><span style=3D"font-size:10.5pt;font-family=
:&quot;Helvetica Neue&quot;;color:black;background:white">If you
 agree with the proposed line above I&#39;ll make editions and come back to=
 you for more comments and/or approval.<span class=3D"apple-converted-space=
">=C2=A0</span></span><span style=3D"font-size:10.0pt;font-family:&quot;Hel=
vetica&quot;,sans-serif"></span></p>
</div>
</blockquote>
</div>
</div>


</div></div></span></blockquote> <div class=3D"gmail_signature"></div></bod=
y></html>

--000000000000c0368f0596229672--


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From: Remous-Aris Koutsiamanis <aris@ariskou.com>
Date: Wed, 30 Oct 2019 19:15:25 +0100 (CET)
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll]  =?utf-8?q?WGLC_for_=E2=80=8Bdraft-ietf-roll-nsa-extension?= =?utf-8?q?-04?=
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Hello all,

Firstly lots of thanks to Peter for all his help the previous years and
congratulations to Dominique on your new position!

To Dominique:
I'm sure you have lots of issues to handle right now, managing the
transition, etc., so I will be brief.

I have responded to Rahul's comments and I have made a small modification
regarding the number of OCPs requested for the CAOFs (I'll ask for just
one).
However, is it possible that you also have done the review of the draft
after IETF 105?
Maybe you also have dome pending issues you would like to raise?

If not, does going ahead with the WGLC mean you have no (significant)
issues with it?

Thanks a lot.

Best,
Aris






On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis <aris@ariskou.com=
>
wrote:

> Hello,
>
> yes, I was planning to addess them, I should have an update by tomorrow a=
s
> well as responses to Rahul's comments.
>
> Best,
> Aris
>
> On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav <nyrahul@outlook.com> wrote=
:
>
>> I had sent my comments sometime before.
>> Link:
>> https://mailarchive.ietf.org/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4
>>
>> I certainly feel the draft needs updates.
>>
>> Regards,
>> Rahul
>> ------------------------------
>> *From:* Roll <roll-bounces@ietf.org> on behalf of
>> dominique.barthel@orange.com <dominique.barthel@orange.com>
>> *Sent:* Wednesday, October 30, 2019 8:45 AM
>> *To:* roll@ietf.org <roll@ietf.org>
>> *Subject:* [Roll] WGLC for =E2=80=8Bdraft-ietf-roll-nsa-extension-04
>>
>> Dear all,
>>
>> A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for
>> *draft-ietf-roll-nsa-extension-04*.
>> The draft is available here:
>> https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/
>> Please review this draft to see if you think that it is ready for
>> publication and send comments to the list stating your view.
>> Thank you very much in advance,
>>
>> Ines, Peter and Dominique.
>>
>> ________________________________________________________________________=
_________________________________________________
>>
>> Ce message et ses pieces jointes peuvent contenir des informations confi=
dentielles ou privilegiees et ne doivent donc
>> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez r=
ecu ce message par erreur, veuillez le signaler
>> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages=
 electroniques etant susceptibles d'alteration,
>> Orange decline toute responsabilite si ce message a ete altere, deforme =
ou falsifie. Merci.
>>
>> This message and its attachments may contain confidential or privileged =
information that may be protected by law;
>> they should not be distributed, used or copied without authorisation.
>> If you have received this email in error, please notify the sender and d=
elete this message and its attachments.
>> As emails may be altered, Orange is not liable for messages that have be=
en modified, changed or falsified.
>> Thank you.
>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--00000000000057d514059624b7ad
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hello all,</div><div><br></div><div>Firstly lots of t=
hanks to Peter for all his help the previous years and congratulations to D=
ominique on your new position!</div><div><br></div><div>To Dominique:<br></=
div><div>I&#39;m sure you have lots of issues to handle right now, managing=
 the transition, etc., so I will be brief.</div><div><br></div><div>I have =
responded to Rahul&#39;s comments and I have made a small modification rega=
rding the number of OCPs requested for the CAOFs (I&#39;ll ask for just one=
).</div><div>However, is it possible that you also have done the review of =
the draft after IETF 105?</div><div>Maybe you also have dome pending issues=
 you would like to raise?</div><div><br></div><div>If not, does going ahead=
 with the WGLC mean you have no (significant) issues with it?</div><div><br=
></div><div>Thanks a lot.</div><div><br></div><div>Best,</div><div>Aris<br>=
</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br>=
</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_=
attr">On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis &lt;<a href=
=3D"mailto:aris@ariskou.com">aris@ariskou.com</a>&gt; wrote:<br></div><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:=
1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>Hello,</=
div><div><br></div><div>yes, I was planning to addess them, I should have a=
n update by tomorrow as well as responses to Rahul&#39;s comments.</div><di=
v><br></div><div>Best,</div><div>Aris<br></div></div><br><div class=3D"gmai=
l_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30, 2019 at 10:5=
3 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=3D"_bla=
nk">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I had sent my comments sometime before.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Link:=C2=A0</span><a href=3D"https://mailarchive.ietf.org/arc=
h/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4" style=3D"font-family:Calibri,Helvet=
ica,sans-serif;font-size:12pt" target=3D"_blank">https://mailarchive.ietf.o=
rg/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I certainly feel the draft needs updates.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Regards,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
</div>
<div id=3D"gmail-m_8337524040644398077gmail-m_-8182716046083514144appendons=
end"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_8337524040644398077gmail-m_-8182716046083514144divRplyFw=
dMsg" dir=3D"ltr"><font style=3D"font-size:11pt" face=3D"Calibri, sans-seri=
f" color=3D"#000000"><b>From:</b> Roll &lt;<a href=3D"mailto:roll-bounces@i=
etf.org" target=3D"_blank">roll-bounces@ietf.org</a>&gt; on behalf of <a hr=
ef=3D"mailto:dominique.barthel@orange.com" target=3D"_blank">dominique.bart=
hel@orange.com</a> &lt;<a href=3D"mailto:dominique.barthel@orange.com" targ=
et=3D"_blank">dominique.barthel@orange.com</a>&gt;<br>
<b>Sent:</b> Wednesday, October 30, 2019 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org=
</a> &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a>&gt;<br>
<b>Subject:</b> [Roll] WGLC for =E2=80=8Bdraft-ietf-roll-nsa-extension-04</=
font>
<div>=C2=A0</div>
</div>
<div style=3D"color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-seri=
f">
<div>
<div>Dear all,</div>
<div><br>
</div>
<div>A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for =
<b>draft-ietf-roll-nsa-extension-04</b>.</div>
<div>The draft is available here: <a href=3D"https://datatracker.ietf.org/d=
oc/draft-ietf-roll-nsa-extension/" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/</a>=C2=A0</=
div>
<div>Please review this draft to see if you think that it is ready for publ=
ication and send comments to the list stating your view.</div>
<div>Thank you very much in advance,</div>
<div><br>
</div>
<div>Ines, Peter and Dominique.</div>
</div>
<div><br>
</div>
<pre>______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l&#39;expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d&#39;alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.
</pre>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Wed, 30 Oct 2019 22:44:34 +0200
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Subject: Re: [Roll]  =?utf-8?q?WGLC_for_=E2=80=8Bdraft-ietf-roll-nsa-extension?= =?utf-8?q?-04?=
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Hi Remous,

Thank you for addressing the Rahul comments.

If not, does going ahead with the WGLC mean you have no (significant)
> issues with it?
>

This document got reviews in past versions, which were addressed (I missed
the last Rahul comments, Thanks Rahul for pointing it out!!).
Thus, we believe that is ready for a last round of WG reviews through a
Last Call.  When someone support a document, it should read/review it
before states the support.
Once that the Rahul comments are addressed, I believe that it can go
forward. Unless someone states the opposite and outline more issues.

Hope the above can answer this question.

Thank you and best regards,

Ines.


>
> Thanks a lot.
>
> Best,
> Aris
>
>
>
>
>
>
> On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis <
> aris@ariskou.com> wrote:
>
>> Hello,
>>
>> yes, I was planning to addess them, I should have an update by tomorrow
>> as well as responses to Rahul's comments.
>>
>> Best,
>> Aris
>>
>> On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav <nyrahul@outlook.com>
>> wrote:
>>
>>> I had sent my comments sometime before.
>>> Link:
>>> https://mailarchive.ietf.org/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4
>>>
>>> I certainly feel the draft needs updates.
>>>
>>> Regards,
>>> Rahul
>>> ------------------------------
>>> *From:* Roll <roll-bounces@ietf.org> on behalf of
>>> dominique.barthel@orange.com <dominique.barthel@orange.com>
>>> *Sent:* Wednesday, October 30, 2019 8:45 AM
>>> *To:* roll@ietf.org <roll@ietf.org>
>>> *Subject:* [Roll] WGLC for draft-ietf-roll-nsa-extension-04
>>>
>>> Dear all,
>>>
>>> A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for
>>> *draft-ietf-roll-nsa-extension-04*.
>>> The draft is available here:
>>> https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/
>>> Please review this draft to see if you think that it is ready for
>>> publication and send comments to the list stating your view.
>>> Thank you very much in advance,
>>>
>>> Ines, Peter and Dominique.
>>>
>>> _________________________________________________________________________________________________________________________
>>>
>>> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
>>> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
>>> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
>>> Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
>>>
>>> This message and its attachments may contain confidential or privileged information that may be protected by law;
>>> they should not be distributed, used or copied without authorisation.
>>> If you have received this email in error, please notify the sender and delete this message and its attachments.
>>> As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified.
>>> Thank you.
>>>
>>> _______________________________________________
>>> Roll mailing list
>>> Roll@ietf.org
>>> https://www.ietf.org/mailman/listinfo/roll
>>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr"><div dir=3D"ltr">Hi Remous,=C2=A0<div><br></div><div>Thank=
 you for addressing the Rahul comments.=C2=A0</div><div><br></div></div><di=
v class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0=
px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><=
div dir=3D"ltr"><div>If not, does going ahead with the WGLC mean you have n=
o (significant) issues with it?</div></div></blockquote><div><br></div><div=
>This document got reviews in past versions, which were addressed (I missed=
 the last Rahul comments, Thanks Rahul for pointing it out!!).=C2=A0=C2=A0<=
/div><div>Thus, we believe that is ready for a last round of WG reviews thr=
ough a Last Call.=C2=A0 When someone support a document, it should read/rev=
iew it before states the support.=C2=A0</div><div>Once that the Rahul comme=
nts are addressed, I believe that it can go forward. Unless someone states =
the opposite and outline more issues.=C2=A0</div><div><br></div><div>Hope t=
he above can answer this question.=C2=A0</div><div><br></div><div>Thank you=
 and best regards,</div><div><br></div><div>Ines.</div><div>=C2=A0</div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-lef=
t:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div><br></=
div><div>Thanks a lot.</div><div><br></div><div>Best,</div><div>Aris<br></d=
iv><div><br></div><div><br></div><div><br></div><div><br></div><div><br></d=
iv></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_att=
r">On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis &lt;<a href=3D=
"mailto:aris@ariskou.com" target=3D"_blank">aris@ariskou.com</a>&gt; wrote:=
<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8=
ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr=
"><div>Hello,</div><div><br></div><div>yes, I was planning to addess them, =
I should have an update by tomorrow as well as responses to Rahul&#39;s com=
ments.</div><div><br></div><div>Best,</div><div>Aris<br></div></div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 3=
0, 2019 at 10:53 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com"=
 target=3D"_blank">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px sol=
id rgb(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I had sent my comments sometime before.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Link:=C2=A0</span><a href=3D"https://mailarchive.ietf.org/arc=
h/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4" style=3D"font-family:Calibri,Helvet=
ica,sans-serif;font-size:12pt" target=3D"_blank">https://mailarchive.ietf.o=
rg/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I certainly feel the draft needs updates.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Regards,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
</div>
<div id=3D"gmail-m_6129827300118366808gmail-m_8337524040644398077gmail-m_-8=
182716046083514144appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_6129827300118366808gmail-m_8337524040644398077gmail-m_-8=
182716046083514144divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt"=
 face=3D"Calibri, sans-serif" color=3D"#000000"><b>From:</b> Roll &lt;<a hr=
ef=3D"mailto:roll-bounces@ietf.org" target=3D"_blank">roll-bounces@ietf.org=
</a>&gt; on behalf of <a href=3D"mailto:dominique.barthel@orange.com" targe=
t=3D"_blank">dominique.barthel@orange.com</a> &lt;<a href=3D"mailto:dominiq=
ue.barthel@orange.com" target=3D"_blank">dominique.barthel@orange.com</a>&g=
t;<br>
<b>Sent:</b> Wednesday, October 30, 2019 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org=
</a> &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a>&gt;<br>
<b>Subject:</b> [Roll] WGLC for draft-ietf-roll-nsa-extension-04</font>
<div>=C2=A0</div>
</div>
<div style=3D"color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-seri=
f">
<div>
<div>Dear all,</div>
<div><br>
</div>
<div>A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for =
<b>draft-ietf-roll-nsa-extension-04</b>.</div>
<div>The draft is available here: <a href=3D"https://datatracker.ietf.org/d=
oc/draft-ietf-roll-nsa-extension/" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/</a>=C2=A0</=
div>
<div>Please review this draft to see if you think that it is ready for publ=
ication and send comments to the list stating your view.</div>
<div>Thank you very much in advance,</div>
<div><br>
</div>
<div>Ines, Peter and Dominique.</div>
</div>
<div><br>
</div>
<pre>______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l&#39;expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d&#39;alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.
</pre>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>

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From: Remous-Aris Koutsiamanis <aris@ariskou.com>
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Great,

thanks for the explanation, it's clear to me now.
My impression was that WGLC would mean immediately leaving outside the WG
to be evaluated, and I wasn't sure if we are ready for that before
answering all existing comments.

Again, thanks,
Aris

On Wed, Oct 30, 2019 at 9:45 PM Ines Robles <mariainesrobles=
40googlemail.com@dmarc.ietf.org> wrote:

> Hi Remous,
>
> Thank you for addressing the Rahul comments.
>
> If not, does going ahead with the WGLC mean you have no (significant)
>> issues with it?
>>
>
> This document got reviews in past versions, which were addressed (I missed
> the last Rahul comments, Thanks Rahul for pointing it out!!).
> Thus, we believe that is ready for a last round of WG reviews through a
> Last Call.  When someone support a document, it should read/review it
> before states the support.
> Once that the Rahul comments are addressed, I believe that it can go
> forward. Unless someone states the opposite and outline more issues.
>
> Hope the above can answer this question.
>
> Thank you and best regards,
>
> Ines.
>
>
>>
>> Thanks a lot.
>>
>> Best,
>> Aris
>>
>>
>>
>>
>>
>>
>> On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis <
>> aris@ariskou.com> wrote:
>>
>>> Hello,
>>>
>>> yes, I was planning to addess them, I should have an update by tomorrow
>>> as well as responses to Rahul's comments.
>>>
>>> Best,
>>> Aris
>>>
>>> On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav <nyrahul@outlook.com>
>>> wrote:
>>>
>>>> I had sent my comments sometime before.
>>>> Link:
>>>> https://mailarchive.ietf.org/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4
>>>>
>>>> I certainly feel the draft needs updates.
>>>>
>>>> Regards,
>>>> Rahul
>>>> ------------------------------
>>>> *From:* Roll <roll-bounces@ietf.org> on behalf of
>>>> dominique.barthel@orange.com <dominique.barthel@orange.com>
>>>> *Sent:* Wednesday, October 30, 2019 8:45 AM
>>>> *To:* roll@ietf.org <roll@ietf.org>
>>>> *Subject:* [Roll] WGLC for draft-ietf-roll-nsa-extension-04
>>>>
>>>> Dear all,
>>>>
>>>> A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for
>>>> *draft-ietf-roll-nsa-extension-04*.
>>>> The draft is available here:
>>>> https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/
>>>> Please review this draft to see if you think that it is ready for
>>>> publication and send comments to the list stating your view.
>>>> Thank you very much in advance,
>>>>
>>>> Ines, Peter and Dominique.
>>>>
>>>> _________________________________________________________________________________________________________________________
>>>>
>>>> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
>>>> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
>>>> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
>>>> Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
>>>>
>>>> This message and its attachments may contain confidential or privileged information that may be protected by law;
>>>> they should not be distributed, used or copied without authorisation.
>>>> If you have received this email in error, please notify the sender and delete this message and its attachments.
>>>> As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified.
>>>> Thank you.
>>>>
>>>> _______________________________________________
>>>> Roll mailing list
>>>> Roll@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/roll
>>>>
>>> _______________________________________________
>>> Roll mailing list
>>> Roll@ietf.org
>>> https://www.ietf.org/mailman/listinfo/roll
>>>
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>> https://www.ietf.org/mailman/listinfo/roll
>>
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--000000000000233c2b059626f0a7
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Great,</div><div><br></div><div>thanks for the explan=
ation, it&#39;s clear to me now.</div><div>My impression was that WGLC woul=
d mean immediately leaving outside the WG to be evaluated, and I wasn&#39;t=
 sure if we are ready for that before answering all existing comments.</div=
><div><br></div><div>Again, thanks,</div><div>Aris<br></div></div><br><div =
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30,=
 2019 at 9:45 PM Ines Robles &lt;mariainesrobles=3D<a href=3D"mailto:40goog=
lemail.com@dmarc.ietf.org">40googlemail.com@dmarc.ietf.org</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">=
<div dir=3D"ltr">Hi Remous,=C2=A0<div><br></div><div>Thank you for addressi=
ng the Rahul comments.=C2=A0</div><div><br></div></div><div class=3D"gmail_=
quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><=
div>If not, does going ahead with the WGLC mean you have no (significant) i=
ssues with it?</div></div></blockquote><div><br></div><div>This document go=
t reviews in past versions, which were addressed (I missed the last Rahul c=
omments, Thanks Rahul for pointing it out!!).=C2=A0=C2=A0</div><div>Thus, w=
e believe that is ready for a last round of WG reviews through a Last Call.=
=C2=A0 When someone support a document, it should read/review it before sta=
tes the support.=C2=A0</div><div>Once that the Rahul comments are addressed=
, I believe that it can go forward. Unless someone states the opposite and =
outline more issues.=C2=A0</div><div><br></div><div>Hope the above can answ=
er this question.=C2=A0</div><div><br></div><div>Thank you and best regards=
,</div><div><br></div><div>Ines.</div><div>=C2=A0</div><blockquote class=3D=
"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(2=
04,204,204);padding-left:1ex"><div dir=3D"ltr"><div><br></div><div>Thanks a=
 lot.</div><div><br></div><div>Best,</div><div>Aris<br></div><div><br></div=
><div><br></div><div><br></div><div><br></div><div><br></div></div><br><div=
 class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30=
, 2019 at 10:56 AM Remous-Aris Koutsiamanis &lt;<a href=3D"mailto:aris@aris=
kou.com" target=3D"_blank">aris@ariskou.com</a>&gt; wrote:<br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1p=
x solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>Hello,</di=
v><div><br></div><div>yes, I was planning to addess them, I should have an =
update by tomorrow as well as responses to Rahul&#39;s comments.</div><div>=
<br></div><div>Best,</div><div>Aris<br></div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30, 2019 at 10:53 =
AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=3D"_blank=
">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I had sent my comments sometime before.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Link:=C2=A0</span><a href=3D"https://mailarchive.ietf.org/arc=
h/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4" style=3D"font-family:Calibri,Helvet=
ica,sans-serif;font-size:12pt" target=3D"_blank">https://mailarchive.ietf.o=
rg/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I certainly feel the draft needs updates.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Regards,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
</div>
<div id=3D"gmail-m_-7688032872372991314gmail-m_6129827300118366808gmail-m_8=
337524040644398077gmail-m_-8182716046083514144appendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_-7688032872372991314gmail-m_6129827300118366808gmail-m_8=
337524040644398077gmail-m_-8182716046083514144divRplyFwdMsg" dir=3D"ltr"><f=
ont style=3D"font-size:11pt" face=3D"Calibri, sans-serif" color=3D"#000000"=
><b>From:</b> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_=
blank">roll-bounces@ietf.org</a>&gt; on behalf of <a href=3D"mailto:dominiq=
ue.barthel@orange.com" target=3D"_blank">dominique.barthel@orange.com</a> &=
lt;<a href=3D"mailto:dominique.barthel@orange.com" target=3D"_blank">domini=
que.barthel@orange.com</a>&gt;<br>
<b>Sent:</b> Wednesday, October 30, 2019 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org=
</a> &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a>&gt;<br>
<b>Subject:</b> [Roll] WGLC for draft-ietf-roll-nsa-extension-04</font>
<div>=C2=A0</div>
</div>
<div style=3D"color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-seri=
f">
<div>
<div>Dear all,</div>
<div><br>
</div>
<div>A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for =
<b>draft-ietf-roll-nsa-extension-04</b>.</div>
<div>The draft is available here: <a href=3D"https://datatracker.ietf.org/d=
oc/draft-ietf-roll-nsa-extension/" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/</a>=C2=A0</=
div>
<div>Please review this draft to see if you think that it is ready for publ=
ication and send comments to the list stating your view.</div>
<div>Thank you very much in advance,</div>
<div><br>
</div>
<div>Ines, Peter and Dominique.</div>
</div>
<div><br>
</div>
<pre>______________________________________________________________________=
___________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations confiden=
tielles ou privilegiees et ne doivent donc
pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu=
 ce message par erreur, veuillez le signaler
a l&#39;expediteur et le detruire ainsi que les pieces jointes. Les message=
s electroniques etant susceptibles d&#39;alteration,
Orange decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.

This message and its attachments may contain confidential or privileged inf=
ormation that may be protected by law;
they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and dele=
te this message and its attachments.
As emails may be altered, Orange is not liable for messages that have been =
modified, changed or falsified.
Thank you.
</pre>
</div>
</div>

_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Wed, 30 Oct 2019 23:07:45 +0200
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Hi Aris,

You are right :), no document should leave a WG before addressing all
existing comments. :)

Have a great evening,

Ines.



On Wed, Oct 30, 2019 at 10:54 PM Remous-Aris Koutsiamanis <aris@ariskou.com>
wrote:

> Great,
>
> thanks for the explanation, it's clear to me now.
> My impression was that WGLC would mean immediately leaving outside the WG
> to be evaluated, and I wasn't sure if we are ready for that before
> answering all existing comments.
>
> Again, thanks,
> Aris
>
> On Wed, Oct 30, 2019 at 9:45 PM Ines Robles <mariainesrobles=
> 40googlemail.com@dmarc.ietf.org> wrote:
>
>> Hi Remous,
>>
>> Thank you for addressing the Rahul comments.
>>
>> If not, does going ahead with the WGLC mean you have no (significant)
>>> issues with it?
>>>
>>
>> This document got reviews in past versions, which were addressed (I
>> missed the last Rahul comments, Thanks Rahul for pointing it out!!).
>> Thus, we believe that is ready for a last round of WG reviews through a
>> Last Call.  When someone support a document, it should read/review it
>> before states the support.
>> Once that the Rahul comments are addressed, I believe that it can go
>> forward. Unless someone states the opposite and outline more issues.
>>
>> Hope the above can answer this question.
>>
>> Thank you and best regards,
>>
>> Ines.
>>
>>
>>>
>>> Thanks a lot.
>>>
>>> Best,
>>> Aris
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Wed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis <
>>> aris@ariskou.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> yes, I was planning to addess them, I should have an update by tomorrow
>>>> as well as responses to Rahul's comments.
>>>>
>>>> Best,
>>>> Aris
>>>>
>>>> On Wed, Oct 30, 2019 at 10:53 AM Rahul Jadhav <nyrahul@outlook.com>
>>>> wrote:
>>>>
>>>>> I had sent my comments sometime before.
>>>>> Link:
>>>>> https://mailarchive.ietf.org/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4
>>>>>
>>>>> I certainly feel the draft needs updates.
>>>>>
>>>>> Regards,
>>>>> Rahul
>>>>> ------------------------------
>>>>> *From:* Roll <roll-bounces@ietf.org> on behalf of
>>>>> dominique.barthel@orange.com <dominique.barthel@orange.com>
>>>>> *Sent:* Wednesday, October 30, 2019 8:45 AM
>>>>> *To:* roll@ietf.org <roll@ietf.org>
>>>>> *Subject:* [Roll] WGLC for draft-ietf-roll-nsa-extension-04
>>>>>
>>>>> Dear all,
>>>>>
>>>>> A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for
>>>>> *draft-ietf-roll-nsa-extension-04*.
>>>>> The draft is available here:
>>>>> https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/
>>>>> Please review this draft to see if you think that it is ready for
>>>>> publication and send comments to the list stating your view.
>>>>> Thank you very much in advance,
>>>>>
>>>>> Ines, Peter and Dominique.
>>>>>
>>>>> _________________________________________________________________________________________________________________________
>>>>>
>>>>> Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc
>>>>> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler
>>>>> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration,
>>>>> Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
>>>>>
>>>>> This message and its attachments may contain confidential or privileged information that may be protected by law;
>>>>> they should not be distributed, used or copied without authorisation.
>>>>> If you have received this email in error, please notify the sender and delete this message and its attachments.
>>>>> As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified.
>>>>> Thank you.
>>>>>
>>>>> _______________________________________________
>>>>> Roll mailing list
>>>>> Roll@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/roll
>>>>>
>>>> _______________________________________________
>>>> Roll mailing list
>>>> Roll@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/roll
>>>>
>>> _______________________________________________
>>> Roll mailing list
>>> Roll@ietf.org
>>> https://www.ietf.org/mailman/listinfo/roll
>>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr">Hi Aris,<div><br></div><div>You are right :), no document =
should leave a WG before addressing all existing comments. :)</div><div><br=
></div><div>Have a great evening,</div><div><br></div><div>Ines.</div><div>=
<br></div><div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"l=
tr" class=3D"gmail_attr">On Wed, Oct 30, 2019 at 10:54 PM Remous-Aris Kouts=
iamanis &lt;<a href=3D"mailto:aris@ariskou.com">aris@ariskou.com</a>&gt; wr=
ote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px=
 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D=
"ltr"><div>Great,</div><div><br></div><div>thanks for the explanation, it&#=
39;s clear to me now.</div><div>My impression was that WGLC would mean imme=
diately leaving outside the WG to be evaluated, and I wasn&#39;t sure if we=
 are ready for that before answering all existing comments.</div><div><br><=
/div><div>Again, thanks,</div><div>Aris<br></div></div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30, 2019 at 9:=
45 PM Ines Robles &lt;mariainesrobles=3D<a href=3D"mailto:40googlemail.com@=
dmarc.ietf.org" target=3D"_blank">40googlemail.com@dmarc.ietf.org</a>&gt; w=
rote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=
=3D"ltr"><div dir=3D"ltr">Hi Remous,=C2=A0<div><br></div><div>Thank you for=
 addressing the Rahul comments.=C2=A0</div><div><br></div></div><div class=
=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=
=3D"ltr"><div>If not, does going ahead with the WGLC mean you have no (sign=
ificant) issues with it?</div></div></blockquote><div><br></div><div>This d=
ocument got reviews in past versions, which were addressed (I missed the la=
st Rahul comments, Thanks Rahul for pointing it out!!).=C2=A0=C2=A0</div><d=
iv>Thus, we believe that is ready for a last round of WG reviews through a =
Last Call.=C2=A0 When someone support a document, it should read/review it =
before states the support.=C2=A0</div><div>Once that the Rahul comments are=
 addressed, I believe that it can go forward. Unless someone states the opp=
osite and outline more issues.=C2=A0</div><div><br></div><div>Hope the abov=
e can answer this question.=C2=A0</div><div><br></div><div>Thank you and be=
st regards,</div><div><br></div><div>Ines.</div><div>=C2=A0</div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px s=
olid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div><br></div><di=
v>Thanks a lot.</div><div><br></div><div>Best,</div><div>Aris<br></div><div=
><br></div><div><br></div><div><br></div><div><br></div><div><br></div></di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On W=
ed, Oct 30, 2019 at 10:56 AM Remous-Aris Koutsiamanis &lt;<a href=3D"mailto=
:aris@ariskou.com" target=3D"_blank">aris@ariskou.com</a>&gt; wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>=
Hello,</div><div><br></div><div>yes, I was planning to addess them, I shoul=
d have an update by tomorrow as well as responses to Rahul&#39;s comments.<=
/div><div><br></div><div>Best,</div><div>Aris<br></div></div><br><div class=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Oct 30, 2019=
 at 10:53 AM Rahul Jadhav &lt;<a href=3D"mailto:nyrahul@outlook.com" target=
=3D"_blank">nyrahul@outlook.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">




<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I had sent my comments sometime before.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<span style=3D"color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif;fo=
nt-size:12pt">Link:=C2=A0</span><a href=3D"https://mailarchive.ietf.org/arc=
h/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4" style=3D"font-family:Calibri,Helvet=
ica,sans-serif;font-size:12pt" target=3D"_blank">https://mailarchive.ietf.o=
rg/arch/msg/roll/Y-zFm6XQPwwMYRqTQYbyBwe9Qm4</a></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I certainly feel the draft needs updates.</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Regards,</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Rahul=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
</div>
<div id=3D"gmail-m_-5256450438129193997gmail-m_-7688032872372991314gmail-m_=
6129827300118366808gmail-m_8337524040644398077gmail-m_-8182716046083514144a=
ppendonsend"></div>
<hr style=3D"display:inline-block;width:98%">
<div id=3D"gmail-m_-5256450438129193997gmail-m_-7688032872372991314gmail-m_=
6129827300118366808gmail-m_8337524040644398077gmail-m_-8182716046083514144d=
ivRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" face=3D"Calibri, s=
ans-serif" color=3D"#000000"><b>From:</b> Roll &lt;<a href=3D"mailto:roll-b=
ounces@ietf.org" target=3D"_blank">roll-bounces@ietf.org</a>&gt; on behalf =
of <a href=3D"mailto:dominique.barthel@orange.com" target=3D"_blank">domini=
que.barthel@orange.com</a> &lt;<a href=3D"mailto:dominique.barthel@orange.c=
om" target=3D"_blank">dominique.barthel@orange.com</a>&gt;<br>
<b>Sent:</b> Wednesday, October 30, 2019 8:45 AM<br>
<b>To:</b> <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org=
</a> &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a>&gt;<br>
<b>Subject:</b> [Roll] WGLC for draft-ietf-roll-nsa-extension-04</font>
<div>=C2=A0</div>
</div>
<div style=3D"color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-seri=
f">
<div>
<div>Dear all,</div>
<div><br>
</div>
<div>A Working Group Last Call (WGLC) starts today (10/30) until 11/13 for =
<b>draft-ietf-roll-nsa-extension-04</b>.</div>
<div>The draft is available here: <a href=3D"https://datatracker.ietf.org/d=
oc/draft-ietf-roll-nsa-extension/" target=3D"_blank">
https://datatracker.ietf.org/doc/draft-ietf-roll-nsa-extension/</a>=C2=A0</=
div>
<div>Please review this draft to see if you think that it is ready for publ=
ication and send comments to the list stating your view.</div>
<div>Thank you very much in advance,</div>
<div><br>
</div>
<div>Ines, Peter and Dominique.</div>
</div>
<div><br>
</div>
<pre>______________________________________________________________________=
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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Thu, 31 Oct 2019 13:57:02 +0200
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Subject: Re: [Roll] draft-ietf-roll-unaware-leaves (WAS: AD Review of draft-ietf-roll-efficient-npdao-16)
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Hi Pascal,

Agree with the status codes.

Questions:

1- In the  Table 1: RPL Status per RFC 6550, when the status is zero, would
it be good to add between  brackets (Success/Unqualified acceptance -since
you mentioned it when explaining bit E -) like: ,

                  +---------+---------------------------+

                  | Range   | Meaning                   |

                  +=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+

                  | 0       | RFC 6550 (Success)        |

                  +---------+---------------------------+



2- where states "...When the 'A' flag is reset," should it be better "When =
the
'A' flag is not set," ?

Thank you,

Ines.

On Wed, Oct 30, 2019 at 5:43 PM Alvaro Retana <aretana.ietf@gmail.com>
wrote:

> Just for clarity.
>
> The changes proposed here are for draft-ietf-roll-unaware-leaves
> (not draft-ietf-roll-efficient-npdao).  I changed the subject to reflect
> that.
>
> Alvaro.
>
> On October 30, 2019 at 6:37:15 AM, Pascal Thubert (pthubert) (
> pthubert@cisco.com) wrote:
>
> Dear all :
>
>
>
> There is a need in the RUL draft to carry a 6LoWPAN ND status inside a RP=
L
> status so we can avoid duplicating DAR/DAC and DAO/DAO-ACK through the
> network. This also allows async communication down the DODAG through DCO
> (efficient NPDAO).
>
>
>
> Alvaro pointed out that mapping one  status in the other as proposed so
> far was not too clean. The change proposed herein addresses this concern.
> The change would be adding another control bit in the RPL status and
> formalizing the format as follows:
>
>
>
> 7.  Updated RPL Status
>
>
>
>    The RPL Status is defined in section 6.5.1. of [RFC6550] for use in
>
>    the DAO-Ack message and values are assigned as follows:
>
>
>
>                   +---------+---------------------------+
>
>                   | Range   | Meaning                   |
>
>                   +=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
>
>                   | 0       | RFC 6550                  |
>
>                   +---------+---------------------------+
>
>                   | 1-127   | Not an outright rejection |
>
>                   +---------+---------------------------+
>
>                   | 128-255 | Rejection                 |
>
>                   +---------+---------------------------+
>
>
>
>                       Table 1: RPL Status per RFC 6550
>
>
>
>    This specification extends the scope of the RPL status to be used in
>
>    RPL DCO messages.  Furthermore, this specification enables to carry
>
>    the status values defined for use in the IPv6 ND Extended Address
>
>    Registration Option (EARO) and listed in table 1 of [RFC8505].  Only
>
>    EARO status values in the range 0-63 can be transported.
>
>
>
>    The resulting RPL status is as follows:
>
>
>
>                         0 1 2 3 4 5 6 7
>
>                       +-+-+-+-+-+-+-+-+
>
>                        |E|A|  Value    |
>
>                        +-+-+-+-+-+-+-+-+
>
>
>
>                         Figure 2: RPL status Format
>
>
>
>    RPL Status subfields:
>
>
>
>    E:  1-bit flag.  Set to indicate a rejection.  When not set, a value
>
>       of 0 indicates success and other values indicate an non-outright-
>
>       rejection as per RFC 6550.
>
>
>
>    A:  1-bit flag.  Indicates the type of the status value.
>
>
>
>    Status Value:  6-bit unsigned integer.  If the 'A' flag is set this
>
>       field transports a status value defined for IPv6 ND EARO.  When
>
>       the 'A' flag is reset, the status value is defined in a RPL
>
>       extension
>
>
>
>    When building a DCO message upon an IPv6 ND NA or DAC message, the
>
>    root MUST place the ARO status unchanged in a mapped DCO with the 'A'
>
>    bit set.  Conversely the 6LR MUST place the ARO status unchanged in
>
>    the NA(EARO) that is built upon a DCO with the 'A' bit set.
>
>
>
> Comments welcome (and urgent!). Unless I see opposition I plan to publish
> before cutoff so we can discuss it at IETF 106.
>
>
>
> All the best;
>
>
>
> Pascal
>
>
>
> *From:* Alvaro Retana <aretana.ietf@gmail.com>
> *Sent:* mardi 29 octobre 2019 23:10
> *To:* Pascal Thubert (pthubert) <pthubert@cisco.com>;
> draft-ietf-roll-efficient-npdao@ietf.org
> *Cc:* roll-chairs@ietf.org; roll <roll@ietf.org>; Peter van der Stok <
> consultancy@vanderstok.org>
> *Subject:* RE: AD Review of draft-ietf-roll-efficient-npdao-16
>
>
>
> Hi!
>
>
>
> I=E2=80=99m fine with the changes proposed to draft-ietf-roll-efficient-n=
pdao.
>
>
>
> I want to see the WG reach consensus on the changes related
> to draft-ietf-roll-unaware-leaves.
>
>
>
> Thanks!
>
>
>
> Alvaro.
>
>
>
> On October 29, 2019 at 5:52:13 AM, Pascal Thubert (pthubert) (
> pthubert@cisco.com) wrote:
>
>  If you agree with the proposed line above I'll make editions and come
> back to you for more comments and/or approval.
>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

--0000000000005ba0e70596338e74
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi Pascal,<div><br></div><div>Agree with =
the status codes.=C2=A0</div><div><br></div><div>Questions:=C2=A0</div><div=
><br></div><div>1- In the=C2=A0=C2=A0Table 1: RPL Status per RFC 6550, when=
 the status is zero, would it be good to add=C2=A0between=C2=A0 brackets (S=
uccess/Unqualified acceptance -since you mentioned it when explaining bit E=
 -) like:  ,=C2=A0</div><div><br></div><div><p class=3D"MsoNormal"><span la=
ng=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier New&quot;">=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +---------+-=
--------------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Range=C2=A0=C2=
=A0 | Meaning=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +=3D=3D=3D=3D=3D=
=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 | RFC 6550 (Success)=C2=A0 =C2=A0 =C2=A0 =C2=A0 |<=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+------=
---------------------+</span></p></div><div><br></div><div><br></div><div><=
br></div><div>2- where states &quot;...<span style=3D"font-family:&quot;Cou=
rier New&quot;;font-size:10pt">When t</span><span style=3D"font-family:&quo=
t;Courier New&quot;;font-size:10pt">he &#39;A&#39; flag is reset,</span>&qu=
ot; should it be better &quot;<span style=3D"font-family:&quot;Courier New&=
quot;;font-size:10pt">When=C2=A0</span><span style=3D"font-family:&quot;Cou=
rier New&quot;;font-size:10pt">the &#39;A&#39; flag is not set,</span>&quot=
; ?</div><div><br></div><div>Thank you,</div><div><br></div><div>Ines.</div=
></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"=
>On Wed, Oct 30, 2019 at 5:43 PM Alvaro Retana &lt;<a href=3D"mailto:aretan=
a.ietf@gmail.com">aretana.ietf@gmail.com</a>&gt; wrote:<br></div><blockquot=
e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px s=
olid rgb(204,204,204);padding-left:1ex"><div style=3D"overflow-wrap: break-=
word;"><div style=3D"font-family:Helvetica,Arial;font-size:13px">Just for c=
larity.</div><div style=3D"font-family:Helvetica,Arial;font-size:13px"><br>=
</div><div style=3D"font-family:Helvetica,Arial;font-size:13px">The changes=
 proposed here are for=C2=A0draft-ietf-roll-unaware-leaves (not=C2=A0draft-=
ietf-roll-efficient-npdao).=C2=A0 I changed the subject to reflect that.</d=
iv><div style=3D"font-family:Helvetica,Arial;font-size:13px"><br></div><div=
 style=3D"font-family:Helvetica,Arial;font-size:13px">Alvaro.</div> <br><p>=
On October 30, 2019 at 6:37:15 AM, Pascal Thubert (pthubert) (<a href=3D"ma=
ilto:pthubert@cisco.com" target=3D"_blank">pthubert@cisco.com</a>) wrote:</=
p> <blockquote type=3D"cite"><span><div lang=3D"FR"><div></div><div>






<div>
<p class=3D"MsoNormal"><span>Dear all=C2=A0:</span></p>
<p class=3D"MsoNormal"><span>=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There is a need in the RUL draf=
t to carry a 6LoWPAN ND status inside a RPL status so we can avoid duplicat=
ing DAR/DAC and DAO/DAO-ACK through the network. This also allows async com=
munication
 down the DODAG through DCO (efficient NPDAO).</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Alvaro pointed out that mapping=
 one =C2=A0status in the other as proposed so far was not too clean. The ch=
ange proposed herein addresses this concern. The change would be adding ano=
ther control
 bit in the RPL status and formalizing the format as follows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">7.=C2=A0 Updated RPL Status</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 The RPL Status is defined in sec=
tion 6.5.1. of [RFC6550] for use in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 the DAO-Ack message and values a=
re assigned as follows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+------=
---------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | Range=C2=A0=C2=
=A0 | Meaning=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +=3D=3D=3D=3D=3D=
=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 | RFC 6550=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+------=
---------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 1-127=C2=A0=C2=
=A0 | Not an outright rejection |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+------=
---------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| 128-255 | Rej=
ection=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 +---------+------=
---------------------+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 Table 1: RPL Status per RFC 6550</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 This specification extends the s=
cope of the RPL status to be used in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 RPL DCO messages.=C2=A0 Furtherm=
ore, this specification enables to carry</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 the status values defined for us=
e in the IPv6 ND Extended Address</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 Registration Option (EARO) and l=
isted in table 1 of [RFC8505].=C2=A0 Only</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 EARO status values in the range =
0-63 can be transported.=C2=A0
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 The resulting RPL status is as f=
ollows:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A00 1 2 3 4 5 6 7</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0+-+-+-+-+-+-+-+-+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0|E|A|=C2=A0 Value=C2=A0=C2=A0=C2=A0 |</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0+-+-+-+-+-+-+-+-+</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 Figure 2: RPL status Format</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 RPL Status subfields:</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 E:=C2=A0 1-bit flag.=C2=A0 Set t=
o indicate a rejection.=C2=A0 When not set, a value</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 of 0 indicates=
 success and other values indicate an non-outright-</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 rejection as p=
er RFC 6550.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 A:=C2=A0 1-bit flag.=C2=A0 Indic=
ates the type of the status value.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 Status Value:=C2=A0 6-bit unsign=
ed integer.=C2=A0 If the &#39;A&#39; flag is set this</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 field transpor=
ts a status value defined for IPv6 ND EARO.=C2=A0 When</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 the &#39;A&#39=
; flag is reset, the status value is defined in a RPL</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 extension</spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 When building a DCO message upon=
 an IPv6 ND NA or DAC message, the</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 root MUST place the ARO status u=
nchanged in a mapped DCO with the &#39;A&#39;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 bit set.=C2=A0 Conversely the 6L=
R MUST place the ARO status unchanged in</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">=C2=A0=C2=A0 the NA(EARO) that is built upon =
a DCO with the &#39;A&#39; bit set.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Comments welcome (and urgent!).=
 Unless I see opposition I plan to publish before cutoff so we can discuss =
it at IETF 106.</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best;</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span></p>
<div style=3D"border-top:none;border-right:none;border-bottom:none;border-l=
eft:1.5pt solid blue;padding:0cm 0cm 0cm 4pt">
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Alvaro Retana &lt;<a href=3D"mailto:aretana.ietf@gmail.com" tar=
get=3D"_blank">aretana.ietf@gmail.com</a>&gt;
<br>
<b>Sent:</b> mardi 29 octobre 2019 23:10<br>
<b>To:</b> Pascal Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.c=
om" target=3D"_blank">pthubert@cisco.com</a>&gt;; <a href=3D"mailto:draft-i=
etf-roll-efficient-npdao@ietf.org" target=3D"_blank">draft-ietf-roll-effici=
ent-npdao@ietf.org</a><br>
<b>Cc:</b> <a href=3D"mailto:roll-chairs@ietf.org" target=3D"_blank">roll-c=
hairs@ietf.org</a>; roll &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_bl=
ank">roll@ietf.org</a>&gt;; Peter van der Stok &lt;<a href=3D"mailto:consul=
tancy@vanderstok.org" target=3D"_blank">consultancy@vanderstok.org</a>&gt;<=
br>
<b>Subject:</b> RE: AD Review of draft-ietf-roll-efficient-npdao-16</span><=
/p>
</div>
</div>
<p class=3D"MsoNormal">=C2=A0</p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">Hi!</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">I=E2=80=99m fine with the changes proposed to=C2=A0draft-ietf-r=
oll-efficient-npdao.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">I want to see the WG reach consensus on the changes related to=
=C2=A0draft-ietf-roll-unaware-leaves.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">Thanks!</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">=C2=A0</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">Alvaro.</span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:Helvetica,=
sans-serif">=C2=A0</span></p>
<p><span style=3D"font-size:10pt;font-family:Helvetica,sans-serif">On Octob=
er 29, 2019 at 5:52:13 AM, Pascal Thubert (pthubert) (<a href=3D"mailto:pth=
ubert@cisco.com" target=3D"_blank">pthubert@cisco.com</a>) wrote:</span></p=
>
<blockquote style=3D"margin-top:5pt;margin-bottom:5pt">
<div>
<p class=3D"MsoNormal"><span><span style=3D"font-size:10.5pt;font-family:&q=
uot;Helvetica Neue&quot;;color:black;background:white">=C2=A0</span></span>=
<span style=3D"font-size:10.5pt;font-family:&quot;Helvetica Neue&quot;;colo=
r:black;background:white">If you
 agree with the proposed line above I&#39;ll make editions and come back to=
 you for more comments and/or approval.<span>=C2=A0</span></span><span styl=
e=3D"font-size:10pt;font-family:Helvetica,sans-serif"></span></p>
</div>
</blockquote>
</div>
</div>


</div></div></span></blockquote> <div></div></div>
_______________________________________________<br>
Roll mailing list<br>
<a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>

--0000000000005ba0e70596338e74--


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>, Rahul Jadhav <rahul.ietf@gmail.com>, "'Ines Robles (mariainesrobles@googlemail.com)'" <mariainesrobles@googlemail.com>
CC: Michael Richardson <mcr+ietf@sandelman.ca>, Alvaro Retana <aretana.ietf@gmail.com>
Thread-Topic: [Roll] Making RUL draft normative reference in useofrplinfo
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Date: Thu, 31 Oct 2019 13:44:34 +0000
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Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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It's getting urgent to publish with the coming freeze. As for the RUL draft=
 I'm suggesting a clearer language to address the below:

"
6.2.  External Routes and RPL Artifacts

   Section 4.1. of [USEofRPLinfo] provides a set of rules that MUST be
   followed when forwarding packets over an external route:

  ...

   Non-Storing Mode DAO messages are used to signal external routes to
   the Root, even if the DODAG is operated in Storing Mode.  This
   enables to advertise the 6LR that injects the route for use as tunnel
   endpoint in the data path.  For all external routes, the Root should
   use an IP-in-IP tunnel to that 6LR, with the RPL artifacts in the
   outer header to be stripped by the 6LR.  The IP-in-IP encapsulation
   may be avoided in storing mode if the path to the external
   destination beyond the 6LR is known to handle or ignore the RPL
   artifacts properly [RFC8200].  A RUL is an example of a destination
   that is reachable via an external (host) route for which IP-in-IP
   tunneling may be avoided as it ignores the RPI and the consumed SRH
   artifacts.  The use of Non-Storing mode signaling in Storing Mode and
   the associated IP-in-IP encapsulation are transparent to intermediate
   routers that only see packets back and forth between the Root and the
   6LR and do not need a special support for external routes.

...

"

I'll also make a PR for the change below in useofrplinfo.

All the best,

Pascal

From: Pascal Thubert (pthubert)
Sent: mercredi 30 octobre 2019 13:59
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Cc: Michael Richardson <mcr+ietf@sandelman.ca>
Subject: RE: [Roll] Making RUL draft normative reference in useofrplinfo

Hello Rahul, all

From: Roll <roll-bounces@ietf.org<mailto:roll-bounces@ietf.org>> On Behalf =
Of Rahul Jadhav
Sent: dimanche 27 octobre 2019 05:48
To: roll <roll@ietf.org<mailto:roll@ietf.org>>
Cc: Michael Richardson <mcr+ietf@sandelman.ca<mailto:mcr+ietf@sandelman.ca>=
>
Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo

Thank you for clarifying the thoughts in the mail. I am sure I would not ha=
ve caught a drift if this would have been talked about directly (without a =
mail) during the 106-session.

Specifically, I want to talk about the following text:

"

This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel.
"
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h the external target is attaching) handle the external target in non-stori=
ng mode.
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching. The text opens u=
p a lot of room for interpretations and uncovered-scenarios. I am apprehens=
ive of adding such text to useofrplinfo.


<Pascal>
( : Misunderstanding warning : )

The 'signaling' discussed in that text is the control plane, more specifica=
lly the DAO that is sent by the 6LR directly to the root as opposed to perc=
olating child to parent like other internal DAO message in storing mode. In=
 the data plane you have IP in IP to the 6LR and no RH, so the intermediate=
 routers just see a packet to the 6LR and need not worry whether there's an=
 IP packet inside.

We certainly need to clarify. What about:

"

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode DAO messaging even in a

Storing-Mode network. This way, external routes are not advertised within

the DODAG and all packets to an external target reach the Root like normal

non-storing mode traffic. The Non-Storing Mode DAO informs the Root of the

address of the 6LR that injects the external route, and the root uses IP-in=
-IP

encapsulation to that 6LR, which terminates the IP-in-IP tunnel and forward=
s

the original packet outside the RPL domain.

"
</Pascal>




Regarding following, "Do we limit to the ground common with the RUL draft f=
or which there is a defined RPL behavior, or do we define a new different t=
hing where Use-Of-RPL-Info handles an unclear superset of the nodes that su=
pport the RUL draft and for which there is a defined RPL operation? "

I certainly feel that we should limit the ground common for which there is =
a defined RPL behavior.

In general, unaware-leaves seem to have a much broader impact than I initia=
lly thought.


<Pascal>
Cool, we agree : )
</Pascal>

Regards,
Rahul


________________________________
Then that text was stripped off the RUL draft and placed it in the Use-Of-R=
PL-Info because it was really text on the forwarding behavior, which is dif=
ferent if some assumptions cannot be made on the external destination (need=
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a  new section. the  text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet, please find that text inline be=
low:



"



4.1. Updates to RFC6550: Advertise External Routes with Non-Storing


Mode Signaling.



Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to


indicate that the 6LR that generates the DAO redistributes external


targets into the RPL network. An external Target is a Target that


has been learned through an alternate protocol, for instance a route


to a prefix that is outside the RPL domain but reachable via a 6LR.


Being outside of the RPL domain, a node that is reached via an


external target cannot be guaranteed to ignore the RPL artifacts and


cannot be expected to process the [RFC8138] compression correctly.


This means that the RPL artifacts should be contained in an IP-in-IP


encapsulation that is removed by the 6LR, and that any remaining


compression should be expanded by the 6LR before it forwards a packet


outside the RPL domain.



This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel. In case


of an external target, the Root SHOULD use the same IP-in-IP


encapsulation for packets that it generates or that are originated


within the RPL domain as if the packets were coming from the


Internet.



A RUL is a special case of external target when the target is


actually a host and it is known to support a consumed Routing Header


and to ignore a HbH header as prescribed by [RFC8200].. The target


may have been learned through as a host route or may have been


registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be


avoided for Root to RUL communication if the RUL is known to process


the packets as forwarded by the parent 6LR without decapsulation.



In order to enable IP-in-IP all the way to a 6LN, it is beneficial


that the 6LN supports decapsulating IP-in-IP, but that is not assumed


by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a


packet SHOULD terminate the tunnel at a parent 6LR unless it is aware


that the RUL supports IP-in-IP decapsulation.



A node that is reachable over an external route is not expected to


support [RFC8138]. Whether a decapsulation took place or not and


even when the 6LR is delivering the packet to a RUL, the 6LR that


injected an external route MUST uncompress the packet before


forwarding over that external route.

"



So where are we?



We need to agree on what we place in the definition of a RUL for which Use-=
Of-RPL-Info presents a special behavior. Do we limit to the ground common w=
ith the RUL draft for which there is a defined RPL behavior, or do we defin=
e a new different thing where Use-Of-RPL-Info handles an unclear superset o=
f the nodes that support the RUL draft and for which there is a defined RPL=
 operation? I do not see the need because if (ever, though doubtful) a new =
draft defines the RPL operation for one version of "that guy" then is can a=
lso say whether "that guy" should be handled as a RUL or as an "external de=
stination" in Use-Of-RPL-Info.



Thus the proposal to that that the operation of a "RUL" in Use-Of-RPL-Info =
is for a node that supports the RUL draft, and make the RUL draft a normati=
ve reference to define what that exactly mean. If we do so, MISSREF will pl=
ay its guardian role to ensure that Use-Of-RPL-Info is consistent with the =
RUL draft till the last minute because it is not published too hastly.



Looking forward to your reactions,



Ines, Pascal and Michael.









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<body lang=3D"FR" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">It&#8217;s getting urgent to publish with the coming freeze. As for t=
he RUL draft I&#8217;m suggesting a clearer language to address the below:<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">6.2.&nbsp; External Routes and RPL Artifacts<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; Section 4.1. of [USEofRPLinfo] provides a set of rules t=
hat MUST be<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; followed when forwarding packets over an external route:=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp; &#8230;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; <span style=3D"background:yellow;mso-highlight:yellow">
Non-Storing Mode DAO messages are used to signal external routes to<o:p></o=
:p></span></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; the Root, even if=
 the DODAG is operated in Storing Mode.&nbsp; This<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; enables to advert=
ise the 6LR that injects the route for use as tunnel<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; endpoint in the d=
ata path.&nbsp; For all external routes, the Root should<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; use an IP-in-IP t=
unnel to that 6LR, with the RPL artifacts in the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; outer header to b=
e stripped by the 6LR.&nbsp; The IP-in-IP encapsulation<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; may be avoided in=
 storing mode if the path to the external<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; destination beyon=
d the 6LR is known to handle or ignore the RPL<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; artifacts properl=
y [RFC8200].&nbsp; A RUL is an example of a destination<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; that is reachable=
 via an external (host) route for which IP-in-IP<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; tunneling may be =
avoided as it ignores the RPI and the consumed SRH<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; artifacts.&nbsp; =
The use of Non-Storing mode signaling in Storing Mode and<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; the associated IP=
-in-IP encapsulation are transparent to intermediate<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; routers that only=
 see packets back and forth between the Root and the<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"background:yellow;mso-=
highlight:yellow;mso-fareast-language:EN-US">&nbsp;&nbsp; 6LR and do not ne=
ed a special support for external routes.</span><span lang=3D"EN-US" style=
=3D"mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&#8230;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">I&#8217;ll also make a PR for the change below in useofrplinfo.<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">All the best,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Pascal<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Pascal Thubert (pthubert)
<br>
<b>Sent:</b> mercredi 30 octobre 2019 13:59<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;roll@ietf.org&gt;<=
br>
<b>Cc:</b> Michael Richardson &lt;mcr&#43;ietf@sandelman.ca&gt;<br>
<b>Subject:</b> RE: [Roll] Making RUL draft normative reference in useofrpl=
info<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Hello Rah=
ul, all<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org">roll-bounces@=
ietf.org</a>&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> dimanche 27 octobre 2019 05:48<br>
<b>To:</b> roll &lt;<a href=3D"mailto:roll@ietf.org">roll@ietf.org</a>&gt;<=
br>
<b>Cc:</b> Michael Richardson &lt;<a href=3D"mailto:mcr&#43;ietf@sandelman.=
ca">mcr&#43;ietf@sandelman.ca</a>&gt;<br>
<b>Subject:</b> Re: [Roll] Making RUL draft normative reference in useofrpl=
info<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Thank y=
ou for clarifying the thoughts in the mail. I am sure I would not have caug=
ht a drift if this would have been talked about directly (without a mail) d=
uring the 106-session.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Specifi=
cally, I want to talk about the following text:&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot; =
<o:p></o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">This specification updates RPL [RFC6550] to RECOM=
MEND that external</span><span style=3D"font-family:&quot;Segoe UI&quot;,sa=
ns-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">targets are advertised using Non-Storing Mode sig=
naling even in a</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">Storing-Mode network. This way, all packets to an=
 external target</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">reach the Root that can encapsulate them, and the=
 Root is informed of</span><span style=3D"font-family:&quot;Segoe UI&quot;,=
sans-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">the address of the 6LR that terminates the IP-in-=
IP tunnel.</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans-serif=
;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot;<=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I under=
stand the reason why we need IP-in-IP tunnel terminating at the 6LR adverti=
sing the external-target. But when we say that only external targets are ad=
vertised using non-storing mode signaling
 even in a storing MOP, what we are asking is that all the 6LRs en-route (a=
nd not only the 6LR to which the external target is attaching) handle the e=
xternal target in non-storing mode.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">This me=
ans that all 6LRs in the network need to be capable of non-storing and stor=
ing mode even though the MOP advertised was for storing MOP only. This has =
implications for behaviour during parent
 switching.&nbsp;The text opens up a lot of room for interpretations and un=
covered-scenarios. I am apprehensive of adding such text to useofrplinfo.<o=
:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt; <o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">( : Misunderstanding warning : =
) <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The &#8216;signaling&#8217; dis=
cussed in that text is the control plane, more specifically the DAO that is=
 sent by the 6LR directly to the root as opposed to percolating child to pa=
rent like other internal DAO message in storing
 mode. In the data plane you have IP in IP to the 6LR and no RH, so the int=
ermediate routers just see a packet to the 6LR and need not worry whether t=
here&#8217;s an IP packet inside.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We certainly need to clarify. W=
hat about:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">This specifica=
tion updates RPL [RFC6550] to RECOMMEND that external<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">targets are ad=
vertised using Non-Storing Mode DAO messaging even in a<o:p></o:p></span></=
p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">Storing-Mode n=
etwork. This way, external routes are not advertised within<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">the DODAG and =
all packets to an external target reach the Root like normal<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span style=3D"font-siz=
e:10.0pt;font-family:&quot;Courier New&quot;">non-storing mode traffic.
</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">The Non-Storing Mode DAO informs the Root of the<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">address of the=
 6LR that injects the external route, and the root uses IP-in-IP<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">encapsulation to that 6LR, which terminates=
 the IP-in-IP tunnel and forwards<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:9.85pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">the original packet outside the RPL domain<=
/span><span lang=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Regardi=
ng following, &quot;</span><span style=3D"font-size:12.0pt;font-family:&quo=
t;Segoe UI&quot;,sans-serif;color:#323130;background:white">Do we limit to =
the ground common with the RUL draft for which there
 is a defined RPL behavior, or do we define a new different thing where Use=
-Of-RPL-Info handles an unclear superset of the nodes that support the RUL =
draft and for which there is a defined RPL operation?&nbsp;&quot;</span><sp=
an style=3D"font-size:12.0pt;color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I certa=
inly feel that we should limit the ground common for which there is a defin=
ed RPL behavior.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">In gene=
ral, unaware-leaves seem to have a much broader impact than I initially tho=
ught.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt;<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Cool, we agree&nbsp;: ) <o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt"><o:p=
>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt;color=
:black">Regards,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Rahul<o=
:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal">Then that text was stripped off the RUL draft and pl=
aced it in the Use-Of-RPL-Info because it was really text on the forwarding=
 behavior, which is different if some assumptions cannot be made on the ext=
ernal destination (need to encaps
 to the parent when it is not necessarily needed for a RUL). That new text =
also fills a gap in Use-Of-RPL-Info and is completely localized in a&nbsp; =
new section. the&nbsp; text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet,
 please find that text inline below:<o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt">&nb=
sp;</span><o:p></o:p></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">4.1. Updates to RFC6550: Advertise Externa=
l Routes with Non-Storing</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Mode Signaling.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Section 6.7.8. of [RFC6550] introduces the=
 'E' flag that is set to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">indicate that the 6LR that generates the D=
AO redistributes external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets into the RPL network. An external =
Target is a Target that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">has been learned through an alternate prot=
ocol, for instance a route</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">to a prefix that is outside the RPL domain=
 but reachable via a 6LR.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Being outside of the RPL domain, a node th=
at is reached via an</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">external target cannot be guaranteed to ig=
nore the RPL artifacts and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">cannot be expected to process the [RFC8138=
] compression correctly.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This means that the RPL artifacts should b=
e contained in an IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation that is removed by the 6LR, =
and that any remaining</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">compression should be expanded by the 6LR =
before it forwards a packet</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">outside the RPL domain.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This specification updates RPL [RFC6550] t=
o RECOMMEND that external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets are advertised using Non-Storing M=
ode signaling even in a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Storing-Mode network. This way, all packet=
s to an external target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">reach the Root that can encapsulate them, =
and the Root is informed of</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the address of the 6LR that terminates the=
 IP-in-IP tunnel.&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&=
quot;Courier New&quot;">In case</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">of an external target, the Root SHOULD use=
 the same IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation for packets that it generate=
s or that are originated</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">within the RPL domain as if the packets we=
re coming from the</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Internet.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A RUL is a special case of external target=
 when the target is</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:0cm 0cm 0cm 0cm"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">actually a host and it is known to support=
 a consumed Routing Header</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">and to ignore a HbH header as prescribed b=
y [RFC8200]..&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&quot=
;Courier New&quot;">The target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">may have been learned through as a host ro=
ute or may have been</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">registered to the 6LR using [RFC8505]. IP-=
in-IP encapsulation MAY be</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">avoided for Root to RUL communication if t=
he RUL is known to process</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the packets as forwarded by the parent 6LR=
 without decapsulation.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">In order to enable IP-in-IP all the way to=
 a 6LN, it is beneficial</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the 6LN supports decapsulating IP-in-=
IP, but that is not assumed</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">by [RFC8504]. If the 6LN is a RUL, the Roo=
t that encapsulates a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">packet SHOULD terminate the tunnel at a pa=
rent 6LR unless it is aware</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the RUL supports IP-in-IP decapsulati=
on.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A node that is reachable over an external =
route is not expected to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">support [RFC8138]. Whether a decapsulation=
 took place or not and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">even when the 6LR is delivering the packet=
 to a RUL, the 6LR that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">injected an external route MUST uncompress=
 the packet before</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">forwarding over that external route.</span=
><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">So where are we?</span><o:p></=
o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">We need to agree on what we pl=
ace in the definition of a RUL for which&nbsp;Use-Of-RPL-Info presents a sp=
ecial behavior. Do we limit to the ground common with the RUL draft for whi=
ch there is a defined RPL behavior, or do
 we define a new different thing where Use-Of-RPL-Info handles an unclear s=
uperset of the nodes that support the RUL draft and for which there is a de=
fined RPL operation? I do not see the need because if (ever, though doubtfu=
l) a new draft defines the RPL operation
 for one version of &#8220;that guy&#8221; then is can also say whether &#8=
220;that guy&#8221; should be handled as a RUL or as an &#8220;external des=
tination&#8221;&nbsp;in&nbsp;Use-Of-RPL-Info.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Thus the proposal to that that=
 the operation of a &#8220;RUL&#8221; in Use-Of-RPL-Info is for a node that=
 supports the RUL draft, and make the RUL draft a normative reference to de=
fine what that exactly mean. If we do so, MISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Looking forward to your reacti=
ons,</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Ines, Pascal and Michael.</spa=
n><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
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Subject: [Roll] I-D Action: draft-ietf-roll-unaware-leaves-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Routing Over Low power and Lossy networks WG of the IETF.

        Title           : Eliding and Querying RPL Information
        Authors         : Pascal Thubert
                          Michael C. Richardson
	Filename        : draft-ietf-roll-unaware-leaves-05.txt
	Pages           : 31
	Date            : 2019-10-31

Abstract:
   This specification extends RFC6550 and RFC8505 to provide unicast and
   multicast routing services in a RPL domain to 6LNs that are plain
   hosts and do not participate to RPL.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-roll-unaware-leaves/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-05
https://datatracker.ietf.org/doc/html/draft-ietf-roll-unaware-leaves-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-unaware-leaves-05


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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To: Ines Robles <mariainesrobles@googlemail.com>, "Routing Over Low power and Lossy networks" <roll@ietf.org>
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
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Subject: Re: [Roll] I-D Action: draft-ietf-roll-unaware-leaves-05.txt
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Dear chairs and all:

I just published RUL 05. I'd like to hear if people wish to add stuff / fea=
tures, or if we have the expectations covered.=20

Unless something shows up soon, I'd say that the work on the RUL draft is c=
omplete. It has been stable apart for the changes / text moves done in rela=
tion with pulling usrofrplinfo and npdao from RFC editor queue.

All items appear sorted out now, and this draft is now blocking the above o=
nes in MISS REF, so I'd see value in moving forward with the RUL draft soon=
 to WGLC. Reviews before IETF 106 would be great to assess the readiness of=
 the draft.

What do you think?

Pascal

> -----Original Message-----
> From: Roll <roll-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> Sent: jeudi 31 octobre 2019 14:47
> To: i-d-announce@ietf.org
> Cc: roll@ietf.org
> Subject: [Roll] I-D Action: draft-ietf-roll-unaware-leaves-05.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> This draft is a work item of the Routing Over Low power and Lossy network=
s
> WG of the IETF.
>=20
>         Title           : Eliding and Querying RPL Information
>         Authors         : Pascal Thubert
>                           Michael C. Richardson
> 	Filename        : draft-ietf-roll-unaware-leaves-05.txt
> 	Pages           : 31
> 	Date            : 2019-10-31
>=20
> Abstract:
>    This specification extends RFC6550 and RFC8505 to provide unicast and
>    multicast routing services in a RPL domain to 6LNs that are plain
>    hosts and do not participate to RPL.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-roll-unaware-leaves/
>=20
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-05
> https://datatracker.ietf.org/doc/html/draft-ietf-roll-unaware-leaves-05
>=20
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-roll-unaware-leaves-05
>=20
>=20
> Please note that it may take a couple of minutes from the time of submiss=
ion
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>, Rahul Jadhav <rahul.ietf@gmail.com>, "'Ines Robles (mariainesrobles@googlemail.com)'" <mariainesrobles@googlemail.com>
CC: Michael Richardson <mcr+ietf@sandelman.ca>, Alvaro Retana <aretana.ietf@gmail.com>
Thread-Topic: [Roll] Making RUL draft normative reference in useofrplinfo
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Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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Dear Ines and all

I made a PR as promised https://github.com/roll-wg/useofrplinfo/pull/4

You'll find that the proposed change clarifies the issue that Rahul was rai=
sing:
"
   This specification updates [RFC6550] to RECOMMEND that external
   targets are advertised using Non-Storing Mode DAO messaging even in a
   Storing-Mode network.  This way, external routes are not advertised
   within the DODAG and all packets to an external target reach the Root
   like normal Non-Storing Mode traffic.  The Non-Storing Mode DAO
   informs the Root of the address of the 6LR that injects the external
   route, and the root uses IP-in-IP encapsulation to that 6LR, which
   terminates the IP-in-IP tunnel and forwards the original packet
   outside the RPL domain free of RPL artifacts.  This whole operation
   is transparent to intermediate routers that only see traffic between
   the 6LR and the Root, and only the Root and the 6LRs that inject
   external routes in the network need to be upgraded to add this
   function to the network.
<

I hope this helps.  Can you please consider publishing before cutoff?

All the best

Pascal



From: Pascal Thubert (pthubert)
Sent: mercredi 30 octobre 2019 13:59
To: Routing Over Low power and Lossy networks <roll@ietf.org<mailto:roll@ie=
tf.org>>
Cc: Michael Richardson <mcr+ietf@sandelman.ca<mailto:mcr+ietf@sandelman.ca>=
>
Subject: RE: [Roll] Making RUL draft normative reference in useofrplinfo

Hello Rahul, all

From: Roll <roll-bounces@ietf.org<mailto:roll-bounces@ietf.org>> On Behalf =
Of Rahul Jadhav
Sent: dimanche 27 octobre 2019 05:48
To: roll <roll@ietf.org<mailto:roll@ietf.org>>
Cc: Michael Richardson <mcr+ietf@sandelman.ca<mailto:mcr+ietf@sandelman.ca>=
>
Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo

Thank you for clarifying the thoughts in the mail. I am sure I would not ha=
ve caught a drift if this would have been talked about directly (without a =
mail) during the 106-session.

Specifically, I want to talk about the following text:

"

This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel.
"
I understand the reason why we need IP-in-IP tunnel terminating at the 6LR =
advertising the external-target. But when we say that only external targets=
 are advertised using non-storing mode signaling even in a storing MOP, wha=
t we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h the external target is attaching) handle the external target in non-stori=
ng mode.
This means that all 6LRs in the network need to be capable of non-storing a=
nd storing mode even though the MOP advertised was for storing MOP only. Th=
is has implications for behaviour during parent switching. The text opens u=
p a lot of room for interpretations and uncovered-scenarios. I am apprehens=
ive of adding such text to useofrplinfo.


<Pascal>
( : Misunderstanding warning : )

The 'signaling' discussed in that text is the control plane, more specifica=
lly the DAO that is sent by the 6LR directly to the root as opposed to perc=
olating child to parent like other internal DAO message in storing mode. In=
 the data plane you have IP in IP to the 6LR and no RH, so the intermediate=
 routers just see a packet to the 6LR and need not worry whether there's an=
 IP packet inside.

We certainly need to clarify. What about:

"

This specification updates RPL [RFC6550] to RECOMMEND that external

targets are advertised using Non-Storing Mode DAO messaging even in a

Storing-Mode network. This way, external routes are not advertised within

the DODAG and all packets to an external target reach the Root like normal

non-storing mode traffic. The Non-Storing Mode DAO informs the Root of the

address of the 6LR that injects the external route, and the root uses IP-in=
-IP

encapsulation to that 6LR, which terminates the IP-in-IP tunnel and forward=
s

the original packet outside the RPL domain.

"
</Pascal>




Regarding following, "Do we limit to the ground common with the RUL draft f=
or which there is a defined RPL behavior, or do we define a new different t=
hing where Use-Of-RPL-Info handles an unclear superset of the nodes that su=
pport the RUL draft and for which there is a defined RPL operation? "

I certainly feel that we should limit the ground common for which there is =
a defined RPL behavior.

In general, unaware-leaves seem to have a much broader impact than I initia=
lly thought.


<Pascal>
Cool, we agree : )
</Pascal>

Regards,
Rahul


________________________________
Then that text was stripped off the RUL draft and placed it in the Use-Of-R=
PL-Info because it was really text on the forwarding behavior, which is dif=
ferent if some assumptions cannot be made on the external destination (need=
 to encaps to the parent when it is not necessarily needed for a RUL). That=
 new text also fills a gap in Use-Of-RPL-Info and is completely localized i=
n a  new section. the  text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet, please find that text inline be=
low:



"



4.1. Updates to RFC6550: Advertise External Routes with Non-Storing


Mode Signaling.



Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to


indicate that the 6LR that generates the DAO redistributes external


targets into the RPL network. An external Target is a Target that


has been learned through an alternate protocol, for instance a route


to a prefix that is outside the RPL domain but reachable via a 6LR.


Being outside of the RPL domain, a node that is reached via an


external target cannot be guaranteed to ignore the RPL artifacts and


cannot be expected to process the [RFC8138] compression correctly.


This means that the RPL artifacts should be contained in an IP-in-IP


encapsulation that is removed by the 6LR, and that any remaining


compression should be expanded by the 6LR before it forwards a packet


outside the RPL domain.



This specification updates RPL [RFC6550] to RECOMMEND that external


targets are advertised using Non-Storing Mode signaling even in a


Storing-Mode network. This way, all packets to an external target


reach the Root that can encapsulate them, and the Root is informed of


the address of the 6LR that terminates the IP-in-IP tunnel. In case


of an external target, the Root SHOULD use the same IP-in-IP


encapsulation for packets that it generates or that are originated


within the RPL domain as if the packets were coming from the


Internet.



A RUL is a special case of external target when the target is


actually a host and it is known to support a consumed Routing Header


and to ignore a HbH header as prescribed by [RFC8200].. The target


may have been learned through as a host route or may have been


registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be


avoided for Root to RUL communication if the RUL is known to process


the packets as forwarded by the parent 6LR without decapsulation.



In order to enable IP-in-IP all the way to a 6LN, it is beneficial


that the 6LN supports decapsulating IP-in-IP, but that is not assumed


by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a


packet SHOULD terminate the tunnel at a parent 6LR unless it is aware


that the RUL supports IP-in-IP decapsulation.



A node that is reachable over an external route is not expected to


support [RFC8138]. Whether a decapsulation took place or not and


even when the 6LR is delivering the packet to a RUL, the 6LR that


injected an external route MUST uncompress the packet before


forwarding over that external route.

"



So where are we?



We need to agree on what we place in the definition of a RUL for which Use-=
Of-RPL-Info presents a special behavior. Do we limit to the ground common w=
ith the RUL draft for which there is a defined RPL behavior, or do we defin=
e a new different thing where Use-Of-RPL-Info handles an unclear superset o=
f the nodes that support the RUL draft and for which there is a defined RPL=
 operation? I do not see the need because if (ever, though doubtful) a new =
draft defines the RPL operation for one version of "that guy" then is can a=
lso say whether "that guy" should be handled as a RUL or as an "external de=
stination" in Use-Of-RPL-Info.



Thus the proposal to that that the operation of a "RUL" in Use-Of-RPL-Info =
is for a node that supports the RUL draft, and make the RUL draft a normati=
ve reference to define what that exactly mean. If we do so, MISSREF will pl=
ay its guardian role to ensure that Use-Of-RPL-Info is consistent with the =
RUL draft till the last minute because it is not published too hastly.



Looking forward to your reactions,



Ines, Pascal and Michael.









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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Dear Ines and all<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">I made a PR as promised
<a href=3D"https://github.com/roll-wg/useofrplinfo/pull/4">https://github.c=
om/roll-wg/useofrplinfo/pull/4</a>
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">You&#8217;ll find that the proposed change clarifies the issue that R=
ahul was raising:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; This specification updates [RFC6550] to RECOMMEND that e=
xternal<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; targets are advertised using Non-Storing Mode DAO messag=
ing even in a<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; Storing-Mode network.&nbsp; This way, external routes ar=
e not advertised<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; within the DODAG and all packets to an external target r=
each the Root<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; like normal Non-Storing Mode traffic.&nbsp; The Non-Stor=
ing Mode DAO<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; informs the Root of the address of the 6LR that injects =
the external<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; route, and the root uses IP-in-IP encapsulation to that =
6LR, which<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; terminates the IP-in-IP tunnel and forwards the original=
 packet<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; outside the RPL domain free of RPL artifacts.&nbsp; This=
 whole operation<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; is transparent to intermediate routers that only see tra=
ffic between<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; the 6LR and the Root, and only the Root and the 6LRs tha=
t inject<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; external routes in the network need to be upgraded to ad=
d this<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">&nbsp;&nbsp; </span>
<span style=3D"mso-fareast-language:EN-US">function to the network.<o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">&laquo;&n=
bsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">I hope this helps. &nbsp;Can you please consider publishing before cu=
toff?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">All the best<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US">Pascal<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"mso-fareast-language:E=
N-US"><o:p>&nbsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Pascal Thubert (pthubert)
<br>
<b>Sent:</b> mercredi 30 octobre 2019 13:59<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;<a href=3D"mailto:=
roll@ietf.org">roll@ietf.org</a>&gt;<br>
<b>Cc:</b> Michael Richardson &lt;<a href=3D"mailto:mcr&#43;ietf@sandelman.=
ca">mcr&#43;ietf@sandelman.ca</a>&gt;<br>
<b>Subject:</b> RE: [Roll] Making RUL draft normative reference in useofrpl=
info<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Hello Rah=
ul, all<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org">roll-bounces@=
ietf.org</a>&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> dimanche 27 octobre 2019 05:48<br>
<b>To:</b> roll &lt;<a href=3D"mailto:roll@ietf.org">roll@ietf.org</a>&gt;<=
br>
<b>Cc:</b> Michael Richardson &lt;<a href=3D"mailto:mcr&#43;ietf@sandelman.=
ca">mcr&#43;ietf@sandelman.ca</a>&gt;<br>
<b>Subject:</b> Re: [Roll] Making RUL draft normative reference in useofrpl=
info<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Thank y=
ou for clarifying the thoughts in the mail. I am sure I would not have caug=
ht a drift if this would have been talked about directly (without a mail) d=
uring the 106-session.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Specifi=
cally, I want to talk about the following text:&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot; =
<o:p></o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">This specification updates RPL [RFC6550] to RECOM=
MEND that external</span><span style=3D"font-family:&quot;Segoe UI&quot;,sa=
ns-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">targets are advertised using Non-Storing Mode sig=
naling even in a</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">Storing-Mode network. This way, all packets to an=
 external target</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans=
-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">reach the Root that can encapsulate them, and the=
 Root is informed of</span><span style=3D"font-family:&quot;Segoe UI&quot;,=
sans-serif;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black;display:=
none"><o:p>&nbsp;</o:p></span></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0" style=3D"bac=
kground:white">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;;color:#323130">the address of the 6LR that terminates the IP-in-=
IP tunnel.</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans-serif=
;color:#323130"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">&quot;<=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I under=
stand the reason why we need IP-in-IP tunnel terminating at the 6LR adverti=
sing the external-target. But when we say that only external targets are ad=
vertised using non-storing mode signaling
 even in a storing MOP, what we are asking is that all the 6LRs en-route (a=
nd not only the 6LR to which the external target is attaching) handle the e=
xternal target in non-storing mode.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">This me=
ans that all 6LRs in the network need to be capable of non-storing and stor=
ing mode even though the MOP advertised was for storing MOP only. This has =
implications for behaviour during parent
 switching.&nbsp;The text opens up a lot of room for interpretations and un=
covered-scenarios. I am apprehensive of adding such text to useofrplinfo.<o=
:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt; <o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">( : Misunderstanding warning : =
) <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The &#8216;signaling&#8217; dis=
cussed in that text is the control plane, more specifically the DAO that is=
 sent by the 6LR directly to the root as opposed to percolating child to pa=
rent like other internal DAO message in storing
 mode. In the data plane you have IP in IP to the 6LR and no RH, so the int=
ermediate routers just see a packet to the 6LR and need not worry whether t=
here&#8217;s an IP packet inside.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We certainly need to clarify. W=
hat about:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">This specifica=
tion updates RPL [RFC6550] to RECOMMEND that external<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">targets are ad=
vertised using Non-Storing Mode DAO messaging even in a<o:p></o:p></span></=
p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">Storing-Mode n=
etwork. This way, external routes are not advertised within<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">the DODAG and =
all packets to an external target reach the Root like normal<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span style=3D"font-siz=
e:10.0pt;font-family:&quot;Courier New&quot;">non-storing mode traffic.
</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">The Non-Storing Mode DAO informs the Root of the<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">address of the=
 6LR that injects the external route, and the root uses IP-in-IP<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">encapsulation to that 6LR, which terminates=
 the IP-in-IP tunnel and forwards<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:9.85pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>&nbsp;</o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">the original packet outside the RPL domain<=
/span><span lang=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Regardi=
ng following, &quot;</span><span style=3D"font-size:12.0pt;font-family:&quo=
t;Segoe UI&quot;,sans-serif;color:#323130;background:white">Do we limit to =
the ground common with the RUL draft for which there
 is a defined RPL behavior, or do we define a new different thing where Use=
-Of-RPL-Info handles an unclear superset of the nodes that support the RUL =
draft and for which there is a defined RPL operation?&nbsp;&quot;</span><sp=
an style=3D"font-size:12.0pt;color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">I certa=
inly feel that we should limit the ground common for which there is a defin=
ed RPL behavior.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">In gene=
ral, unaware-leaves seem to have a much broader impact than I initially tho=
ught.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt;<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Cool, we agree&nbsp;: ) <o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<o:p></o:p></spa=
n></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt"><o:p=
>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12.0pt;color=
:black">Regards,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black">Rahul<o=
:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"divRplyFwdMsg">
<p class=3D"MsoNormal">Then that text was stripped off the RUL draft and pl=
aced it in the Use-Of-RPL-Info because it was really text on the forwarding=
 behavior, which is different if some assumptions cannot be made on the ext=
ernal destination (need to encaps
 to the parent when it is not necessarily needed for a RUL). That new text =
also fills a gap in Use-Of-RPL-Info and is completely localized in a&nbsp; =
new section. the&nbsp; text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet,
 please find that text inline below:<o:p></o:p></p>
</div>
<div>
<div>
<div>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt">&nb=
sp;</span><o:p></o:p></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">4.1. Updates to RFC6550: Advertise Externa=
l Routes with Non-Storing</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Mode Signaling.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Section 6.7.8. of [RFC6550] introduces the=
 'E' flag that is set to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">indicate that the 6LR that generates the D=
AO redistributes external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets into the RPL network. An external =
Target is a Target that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">has been learned through an alternate prot=
ocol, for instance a route</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">to a prefix that is outside the RPL domain=
 but reachable via a 6LR.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Being outside of the RPL domain, a node th=
at is reached via an</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">external target cannot be guaranteed to ig=
nore the RPL artifacts and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">cannot be expected to process the [RFC8138=
] compression correctly.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This means that the RPL artifacts should b=
e contained in an IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation that is removed by the 6LR, =
and that any remaining</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">compression should be expanded by the 6LR =
before it forwards a packet</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">outside the RPL domain.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">This specification updates RPL [RFC6550] t=
o RECOMMEND that external</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">targets are advertised using Non-Storing M=
ode signaling even in a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">Storing-Mode network. This way, all packet=
s to an external target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">reach the Root that can encapsulate them, =
and the Root is informed of</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the address of the 6LR that terminates the=
 IP-in-IP tunnel.&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&=
quot;Courier New&quot;">In case</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">of an external target, the Root SHOULD use=
 the same IP-in-IP</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">encapsulation for packets that it generate=
s or that are originated</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">within the RPL domain as if the packets we=
re coming from the</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span style=3D"font-size:10.0pt;font-family:&quot;C=
ourier New&quot;">Internet.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A RUL is a special case of external target=
 when the target is</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:0cm 0cm 0cm 0cm"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">actually a host and it is known to support=
 a consumed Routing Header</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">and to ignore a HbH header as prescribed b=
y [RFC8200]..&nbsp;</span><span style=3D"font-size:10.0pt;font-family:&quot=
;Courier New&quot;">The target</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">may have been learned through as a host ro=
ute or may have been</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">registered to the 6LR using [RFC8505]. IP-=
in-IP encapsulation MAY be</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">avoided for Root to RUL communication if t=
he RUL is known to process</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">the packets as forwarded by the parent 6LR=
 without decapsulation.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">In order to enable IP-in-IP all the way to=
 a 6LN, it is beneficial</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the 6LN supports decapsulating IP-in-=
IP, but that is not assumed</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">by [RFC8504]. If the 6LN is a RUL, the Roo=
t that encapsulates a</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">packet SHOULD terminate the tunnel at a pa=
rent 6LR unless it is aware</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">that the RUL supports IP-in-IP decapsulati=
on.</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">A node that is reachable over an external =
route is not expected to</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">support [RFC8138]. Whether a decapsulation=
 took place or not and</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">even when the 6LR is delivering the packet=
 to a RUL, the 6LR that</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">injected an external route MUST uncompress=
 the packet before</span><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><o:p>&nbsp;</o:p></span=
></p>
<table class=3D"MsoNormalTable" border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt">
<p class=3D"xmsonormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font=
-family:&quot;Courier New&quot;">forwarding over that external route.</span=
><o:p></o:p></p>
</td>
</tr>
<tr>
<td style=3D"padding:.75pt .75pt .75pt .75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&#8220;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">So where are we?</span><o:p></=
o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">We need to agree on what we pl=
ace in the definition of a RUL for which&nbsp;Use-Of-RPL-Info presents a sp=
ecial behavior. Do we limit to the ground common with the RUL draft for whi=
ch there is a defined RPL behavior, or do
 we define a new different thing where Use-Of-RPL-Info handles an unclear s=
uperset of the nodes that support the RUL draft and for which there is a de=
fined RPL operation? I do not see the need because if (ever, though doubtfu=
l) a new draft defines the RPL operation
 for one version of &#8220;that guy&#8221; then is can also say whether &#8=
220;that guy&#8221; should be handled as a RUL or as an &#8220;external des=
tination&#8221;&nbsp;in&nbsp;Use-Of-RPL-Info.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Thus the proposal to that that=
 the operation of a &#8220;RUL&#8221; in Use-Of-RPL-Info is for a node that=
 supports the RUL draft, and make the RUL draft a normative reference to de=
fine what that exactly mean. If we do so, MISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Looking forward to your reacti=
ons,</span><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">Ines, Pascal and Michael.</spa=
n><o:p></o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><o:p>&nbsp;</o:p></p>
<p class=3D"xmsonormal"><span lang=3D"EN-US">&nbsp;</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Thu, 31 Oct 2019 17:09:59 +0200
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To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
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Subject: [Roll] Reviews request for draft-ietf-roll-unaware-leaves
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Pascal,

I agree, this draft has high impact and we need indeed WG reviews

Dear all, could you please review this draft and sent your comments?

Thank you very much,

Ines, Dominique and Peter.


On Thu, Oct 31, 2019 at 4:06 PM Pascal Thubert (pthubert) <
pthubert@cisco.com> wrote:

> Dear chairs and all:
>
> I just published RUL 05. I'd like to hear if people wish to add stuff /
> features, or if we have the expectations covered.
>
> Unless something shows up soon, I'd say that the work on the RUL draft is
> complete. It has been stable apart for the changes / text moves done in
> relation with pulling usrofrplinfo and npdao from RFC editor queue.
>
> All items appear sorted out now, and this draft is now blocking the above
> ones in MISS REF, so I'd see value in moving forward with the RUL draft
> soon to WGLC. Reviews before IETF 106 would be great to assess the
> readiness of the draft.
>
> What do you think?
>
> Pascal
>
> > -----Original Message-----
> > From: Roll <roll-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> > Sent: jeudi 31 octobre 2019 14:47
> > To: i-d-announce@ietf.org
> > Cc: roll@ietf.org
> > Subject: [Roll] I-D Action: draft-ietf-roll-unaware-leaves-05.txt
> >
> >
> > A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> > This draft is a work item of the Routing Over Low power and Lossy
> networks
> > WG of the IETF.
> >
> >         Title           : Eliding and Querying RPL Information
> >         Authors         : Pascal Thubert
> >                           Michael C. Richardson
> >       Filename        : draft-ietf-roll-unaware-leaves-05.txt
> >       Pages           : 31
> >       Date            : 2019-10-31
> >
> > Abstract:
> >    This specification extends RFC6550 and RFC8505 to provide unicast and
> >    multicast routing services in a RPL domain to 6LNs that are plain
> >    hosts and do not participate to RPL.
> >
> >
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-roll-unaware-leaves/
> >
> > There are also htmlized versions available at:
> > https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-05
> > https://datatracker.ietf.org/doc/html/draft-ietf-roll-unaware-leaves-05
> >
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=draft-ietf-roll-unaware-leaves-05
> >
> >
> > Please note that it may take a couple of minutes from the time of
> submission
> > until the htmlized version and diff are available at tools.ietf.org.
> >
> > Internet-Drafts are also available by anonymous FTP at:
> > ftp://ftp.ietf.org/internet-drafts/
> >
> > _______________________________________________
> > Roll mailing list
> > Roll@ietf.org
> > https://www.ietf.org/mailman/listinfo/roll
>

--0000000000006399830596364027
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Pascal,=C2=A0</div><div><br></div><div>I agree, this =
draft has high impact and we need indeed WG reviews</div><div><br></div><di=
v>Dear all, could you please review this draft and sent your comments?=C2=
=A0</div><div><br></div><div>Thank you very much,</div><div><br></div><div>=
Ines, Dominique and Peter.=C2=A0</div><div>=C2=A0</div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 31, 2019 at 4:=
06 PM Pascal Thubert (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.com">p=
thubert@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex">Dear chairs and all:<br>
<br>
I just published RUL 05. I&#39;d like to hear if people wish to add stuff /=
 features, or if we have the expectations covered. <br>
<br>
Unless something shows up soon, I&#39;d say that the work on the RUL draft =
is complete. It has been stable apart for the changes / text moves done in =
relation with pulling usrofrplinfo and npdao from RFC editor queue.<br>
<br>
All items appear sorted out now, and this draft is now blocking the above o=
nes in MISS REF, so I&#39;d see value in moving forward with the RUL draft =
soon to WGLC. Reviews before IETF 106 would be great to assess the readines=
s of the draft.<br>
<br>
What do you think?<br>
<br>
Pascal<br>
<br>
&gt; -----Original Message-----<br>
&gt; From: Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_bla=
nk">roll-bounces@ietf.org</a>&gt; On Behalf Of <a href=3D"mailto:internet-d=
rafts@ietf.org" target=3D"_blank">internet-drafts@ietf.org</a><br>
&gt; Sent: jeudi 31 octobre 2019 14:47<br>
&gt; To: <a href=3D"mailto:i-d-announce@ietf.org" target=3D"_blank">i-d-ann=
ounce@ietf.org</a><br>
&gt; Cc: <a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll@ietf.org</=
a><br>
&gt; Subject: [Roll] I-D Action: draft-ietf-roll-unaware-leaves-05.txt<br>
&gt; <br>
&gt; <br>
&gt; A New Internet-Draft is available from the on-line Internet-Drafts dir=
ectories.<br>
&gt; This draft is a work item of the Routing Over Low power and Lossy netw=
orks<br>
&gt; WG of the IETF.<br>
&gt; <br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0: Eliding and Querying RPL Information<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0: Pascal Thubert<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0Michael C. Richardson<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-=
ietf-roll-unaware-leaves-05.txt<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0: 31<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 : 2019-10-31<br>
&gt; <br>
&gt; Abstract:<br>
&gt;=C2=A0 =C2=A0 This specification extends RFC6550 and RFC8505 to provide=
 unicast and<br>
&gt;=C2=A0 =C2=A0 multicast routing services in a RPL domain to 6LNs that a=
re plain<br>
&gt;=C2=A0 =C2=A0 hosts and do not participate to RPL.<br>
&gt; <br>
&gt; <br>
&gt; The IETF datatracker status page for this draft is:<br>
&gt; <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-roll-unaware-le=
aves/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/do=
c/draft-ietf-roll-unaware-leaves/</a><br>
&gt; <br>
&gt; There are also htmlized versions available at:<br>
&gt; <a href=3D"https://tools.ietf.org/html/draft-ietf-roll-unaware-leaves-=
05" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-=
ietf-roll-unaware-leaves-05</a><br>
&gt; <a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-roll-unawa=
re-leaves-05" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf=
.org/doc/html/draft-ietf-roll-unaware-leaves-05</a><br>
&gt; <br>
&gt; A diff from the previous version is available at:<br>
&gt; <a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-roll-unaware=
-leaves-05" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/rfcdi=
ff?url2=3Ddraft-ietf-roll-unaware-leaves-05</a><br>
&gt; <br>
&gt; <br>
&gt; Please note that it may take a couple of minutes from the time of subm=
ission<br>
&gt; until the htmlized version and diff are available at <a href=3D"http:/=
/tools.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<b=
r>
&gt; <br>
&gt; Internet-Drafts are also available by anonymous FTP at:<br>
&gt; <a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" tar=
get=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
&gt; <br>
&gt; _______________________________________________<br>
&gt; Roll mailing list<br>
&gt; <a href=3D"mailto:Roll@ietf.org" target=3D"_blank">Roll@ietf.org</a><b=
r>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferr=
er" target=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div></div>

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From: Ines  Robles <mariainesrobles@googlemail.com>
Date: Thu, 31 Oct 2019 17:20:27 +0200
Message-ID: <CAP+sJUd3Ux463wRsfH7OSLqcpOCgBzdfxk-H_-vsoUv+9N8fMQ@mail.gmail.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, Rahul Jadhav <rahul.ietf@gmail.com>,  Michael Richardson <mcr+ietf@sandelman.ca>, Alvaro Retana <aretana.ietf@gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/2uw236YUf_yEaQo0XTm-kv4mnKs>
Subject: Re: [Roll] Making RUL draft normative reference in useofrplinfo
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Thank you Pascal for adding the clarification.

I will add the modifications to the use cases related: 1- Storing Mode:
Example of Flow from Internet to RUL. and 2- Storing Mode: Example of Flow
from RUL to RUL. and publish it.

Best,

Ines.

On Thu, Oct 31, 2019 at 4:20 PM Pascal Thubert (pthubert) <
pthubert@cisco.com> wrote:

> Dear Ines and all
>
>
>
> I made a PR as promised https://github.com/roll-wg/useofrplinfo/pull/4
>
>
>
> You=E2=80=99ll find that the proposed change clarifies the issue that Rah=
ul was
> raising:
>
> =E2=80=9C
>
>    This specification updates [RFC6550] to RECOMMEND that external
>
>    targets are advertised using Non-Storing Mode DAO messaging even in a
>
>    Storing-Mode network.  This way, external routes are not advertised
>
>    within the DODAG and all packets to an external target reach the Root
>
>    like normal Non-Storing Mode traffic.  The Non-Storing Mode DAO
>
>    informs the Root of the address of the 6LR that injects the external
>
>    route, and the root uses IP-in-IP encapsulation to that 6LR, which
>
>    terminates the IP-in-IP tunnel and forwards the original packet
>
>    outside the RPL domain free of RPL artifacts.  This whole operation
>
>    is transparent to intermediate routers that only see traffic between
>
>    the 6LR and the Root, and only the Root and the 6LRs that inject
>
>    external routes in the network need to be upgraded to add this
>
>    function to the network.
>
> =C2=AB
>
>
>
> I hope this helps.  Can you please consider publishing before cutoff?
>
>
>
> All the best
>
>
>
> Pascal
>
>
>
>
>
>
>
> *From:* Pascal Thubert (pthubert)
> *Sent:* mercredi 30 octobre 2019 13:59
> *To:* Routing Over Low power and Lossy networks <roll@ietf.org>
> *Cc:* Michael Richardson <mcr+ietf@sandelman.ca>
> *Subject:* RE: [Roll] Making RUL draft normative reference in useofrplinf=
o
>
>
>
> Hello Rahul, all
>
>
>
> *From:* Roll <roll-bounces@ietf.org> *On Behalf Of *Rahul Jadhav
> *Sent:* dimanche 27 octobre 2019 05:48
> *To:* roll <roll@ietf.org>
> *Cc:* Michael Richardson <mcr+ietf@sandelman.ca>
> *Subject:* Re: [Roll] Making RUL draft normative reference in useofrplinf=
o
>
>
>
> Thank you for clarifying the thoughts in the mail. I am sure I would not
> have caught a drift if this would have been talked about directly (withou=
t
> a mail) during the 106-session.
>
>
>
> Specifically, I want to talk about the following text:
>
>
>
> "
>
> This specification updates RPL [RFC6550] to RECOMMEND that external
>
>
>
> targets are advertised using Non-Storing Mode signaling even in a
>
>
>
> Storing-Mode network. This way, all packets to an external target
>
>
>
> reach the Root that can encapsulate them, and the Root is informed of
>
>
>
> the address of the 6LR that terminates the IP-in-IP tunnel.
>
> "
>
> I understand the reason why we need IP-in-IP tunnel terminating at the 6L=
R
> advertising the external-target. But when we say that only external targe=
ts
> are advertised using non-storing mode signaling even in a storing MOP, wh=
at
> we are asking is that all the 6LRs en-route (and not only the 6LR to whic=
h
> the external target is attaching) handle the external target in non-stori=
ng
> mode.
>
> This means that all 6LRs in the network need to be capable of non-storing
> and storing mode even though the MOP advertised was for storing MOP only.
> This has implications for behaviour during parent switching. The text ope=
ns
> up a lot of room for interpretations and uncovered-scenarios. I am
> apprehensive of adding such text to useofrplinfo.
>
>
>
>
>
> <Pascal>
>
> ( : Misunderstanding warning : )
>
>
>
> The =E2=80=98signaling=E2=80=99 discussed in that text is the control pla=
ne, more
> specifically the DAO that is sent by the 6LR directly to the root as
> opposed to percolating child to parent like other internal DAO message in
> storing mode. In the data plane you have IP in IP to the 6LR and no RH, s=
o
> the intermediate routers just see a packet to the 6LR and need not worry
> whether there=E2=80=99s an IP packet inside.
>
>
>
> We certainly need to clarify. What about:
>
>
>
> =E2=80=9C
>
>
>
> This specification updates RPL [RFC6550] to RECOMMEND that external
>
>
>
> targets are advertised using Non-Storing Mode DAO messaging even in a
>
>
>
> Storing-Mode network. This way, external routes are not advertised within
>
>
>
> the DODAG and all packets to an external target reach the Root like norma=
l
>
>
>
> non-storing mode traffic. The Non-Storing Mode DAO informs the Root of th=
e
>
>
>
> address of the 6LR that injects the external route, and the root uses
> IP-in-IP
>
>
>
> encapsulation to that 6LR, which terminates the IP-in-IP tunnel and
> forwards
>
>
>
> the original packet outside the RPL domain.
>
>
>
> =E2=80=9C
>
> </Pascal>
>
>
>
>
>
>
>
>
>
> Regarding following, "Do we limit to the ground common with the RUL draft
> for which there is a defined RPL behavior, or do we define a new differen=
t
> thing where Use-Of-RPL-Info handles an unclear superset of the nodes that
> support the RUL draft and for which there is a defined RPL operation? "
>
>
>
> I certainly feel that we should limit the ground common for which there i=
s
> a defined RPL behavior.
>
>
>
> In general, unaware-leaves seem to have a much broader impact than I
> initially thought.
>
>
>
>
>
> <Pascal>
>
> Cool, we agree : )
>
> </Pascal>
>
>
>
> Regards,
>
> Rahul
>
>
>
>
> ------------------------------
>
> Then that text was stripped off the RUL draft and placed it in the
> Use-Of-RPL-Info because it was really text on the forwarding behavior,
> which is different if some assumptions cannot be made on the external
> destination (need to encaps to the parent when it is not necessarily need=
ed
> for a RUL). That new text also fills a gap in Use-Of-RPL-Info and is
> completely localized in a  new section. the  text was moved about routing
> from the RUL draft to that section. Since it is not published yet, please
> find that text inline below:
>
>
>
> =E2=80=9C
>
>
>
> 4.1. Updates to RFC6550: Advertise External Routes with Non-Storing
>
>
>
> Mode Signaling.
>
>
>
>
>
> Section 6.7.8. of [RFC6550] introduces the 'E' flag that is set to
>
>
>
> indicate that the 6LR that generates the DAO redistributes external
>
>
>
> targets into the RPL network. An external Target is a Target that
>
>
>
> has been learned through an alternate protocol, for instance a route
>
>
>
> to a prefix that is outside the RPL domain but reachable via a 6LR.
>
>
>
> Being outside of the RPL domain, a node that is reached via an
>
>
>
> external target cannot be guaranteed to ignore the RPL artifacts and
>
>
>
> cannot be expected to process the [RFC8138] compression correctly.
>
>
>
> This means that the RPL artifacts should be contained in an IP-in-IP
>
>
>
> encapsulation that is removed by the 6LR, and that any remaining
>
>
>
> compression should be expanded by the 6LR before it forwards a packet
>
>
>
> outside the RPL domain.
>
>
>
>
>
> This specification updates RPL [RFC6550] to RECOMMEND that external
>
>
>
> targets are advertised using Non-Storing Mode signaling even in a
>
>
>
> Storing-Mode network. This way, all packets to an external target
>
>
>
> reach the Root that can encapsulate them, and the Root is informed of
>
>
>
> the address of the 6LR that terminates the IP-in-IP tunnel. In case
>
>
>
> of an external target, the Root SHOULD use the same IP-in-IP
>
>
>
> encapsulation for packets that it generates or that are originated
>
>
>
> within the RPL domain as if the packets were coming from the
>
>
>
> Internet.
>
>
>
>
>
> A RUL is a special case of external target when the target is
>
>
>
> actually a host and it is known to support a consumed Routing Header
>
>
>
> and to ignore a HbH header as prescribed by [RFC8200].. The target
>
>
>
> may have been learned through as a host route or may have been
>
>
>
> registered to the 6LR using [RFC8505]. IP-in-IP encapsulation MAY be
>
>
>
> avoided for Root to RUL communication if the RUL is known to process
>
>
>
> the packets as forwarded by the parent 6LR without decapsulation.
>
>
>
>
>
> In order to enable IP-in-IP all the way to a 6LN, it is beneficial
>
>
>
> that the 6LN supports decapsulating IP-in-IP, but that is not assumed
>
>
>
> by [RFC8504]. If the 6LN is a RUL, the Root that encapsulates a
>
>
>
> packet SHOULD terminate the tunnel at a parent 6LR unless it is aware
>
>
>
> that the RUL supports IP-in-IP decapsulation.
>
>
>
>
>
> A node that is reachable over an external route is not expected to
>
>
>
> support [RFC8138]. Whether a decapsulation took place or not and
>
>
>
> even when the 6LR is delivering the packet to a RUL, the 6LR that
>
>
>
> injected an external route MUST uncompress the packet before
>
>
>
> forwarding over that external route.
>
> =E2=80=9C
>
>
>
> So where are we?
>
>
>
> We need to agree on what we place in the definition of a RUL for
> which Use-Of-RPL-Info presents a special behavior. Do we limit to the
> ground common with the RUL draft for which there is a defined RPL behavio=
r,
> or do we define a new different thing where Use-Of-RPL-Info handles an
> unclear superset of the nodes that support the RUL draft and for which
> there is a defined RPL operation? I do not see the need because if (ever,
> though doubtful) a new draft defines the RPL operation for one version of
> =E2=80=9Cthat guy=E2=80=9D then is can also say whether =E2=80=9Cthat guy=
=E2=80=9D should be handled as a
> RUL or as an =E2=80=9Cexternal destination=E2=80=9D in Use-Of-RPL-Info.
>
>
>
> Thus the proposal to that that the operation of a =E2=80=9CRUL=E2=80=9D i=
n Use-Of-RPL-Info
> is for a node that supports the RUL draft, and make the RUL draft a
> normative reference to define what that exactly mean. If we do so, MISSRE=
F
> will play its guardian role to ensure that Use-Of-RPL-Info is consistent
> with the RUL draft till the last minute because it is not published too
> hastly.
>
>
>
> Looking forward to your reactions,
>
>
>
> Ines, Pascal and Michael.
>
>
>
>
>
>
>
>
>
>
>

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<div dir=3D"ltr">Thank you Pascal for adding the clarification.=C2=A0<div><=
br></div><div>I will add the modifications to the use cases related: 1-=C2=
=A0<span style=3D"color:rgb(36,41,46);font-family:SFMono-Regular,Consolas,&=
quot;Liberation Mono&quot;,Menlo,monospace;font-size:12px;white-space:pre-w=
rap">Storing Mode: Example of Flow from Internet to RUL. and </span>2-=C2=
=A0<span style=3D"color:rgb(36,41,46);font-family:SFMono-Regular,Consolas,&=
quot;Liberation Mono&quot;,Menlo,monospace;font-size:12px;white-space:pre-w=
rap">Storing Mode: Example of Flow from RUL to RUL. and publish it.</span><=
/div><div><span style=3D"color:rgb(36,41,46);font-family:SFMono-Regular,Con=
solas,&quot;Liberation Mono&quot;,Menlo,monospace;font-size:12px;white-spac=
e:pre-wrap"><br></span></div><div><span style=3D"color:rgb(36,41,46);font-f=
amily:SFMono-Regular,Consolas,&quot;Liberation Mono&quot;,Menlo,monospace;f=
ont-size:12px;white-space:pre-wrap">Best,</span></div><div><span style=3D"c=
olor:rgb(36,41,46);font-family:SFMono-Regular,Consolas,&quot;Liberation Mon=
o&quot;,Menlo,monospace;font-size:12px;white-space:pre-wrap"><br></span></d=
iv><div><span style=3D"color:rgb(36,41,46);font-family:SFMono-Regular,Conso=
las,&quot;Liberation Mono&quot;,Menlo,monospace;font-size:12px;white-space:=
pre-wrap">Ines.</span></div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Thu, Oct 31, 2019 at 4:20 PM Pascal Thuber=
t (pthubert) &lt;<a href=3D"mailto:pthubert@cisco.com">pthubert@cisco.com</=
a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





<div lang=3D"FR">
<div class=3D"gmail-m_-3889915712851529246WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dear Ines and all<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I made a PR as promised
<a href=3D"https://github.com/roll-wg/useofrplinfo/pull/4" target=3D"_blank=
">https://github.com/roll-wg/useofrplinfo/pull/4</a>
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">You=E2=80=99ll find that the pr=
oposed change clarifies the issue that Rahul was raising:<u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=E2=80=9C<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 This specification=
 updates [RFC6550] to RECOMMEND that external<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 targets are advert=
ised using Non-Storing Mode DAO messaging even in a<u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 Storing-Mode netwo=
rk.=C2=A0 This way, external routes are not advertised<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 within the DODAG a=
nd all packets to an external target reach the Root<u></u><u></u></span></p=
>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 like normal Non-St=
oring Mode traffic.=C2=A0 The Non-Storing Mode DAO<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 informs the Root o=
f the address of the 6LR that injects the external<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 route, and the roo=
t uses IP-in-IP encapsulation to that 6LR, which<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 terminates the IP-=
in-IP tunnel and forwards the original packet<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 outside the RPL do=
main free of RPL artifacts.=C2=A0 This whole operation<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 is transparent to =
intermediate routers that only see traffic between<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 the 6LR and the Ro=
ot, and only the Root and the 6LRs that inject<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 external routes in=
 the network need to be upgraded to add this<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0=C2=A0 </span>
<span>function to the network.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span>=C2=AB=C2=A0<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I hope this helps.=C2=A0 Can yo=
u please consider publishing before cutoff?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">All the best<u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Pascal<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<div style=3D"border-top:none;border-right:none;border-bottom:none;border-l=
eft:1.5pt solid blue;padding:0cm 0cm 0cm 4pt">
<div style=3D"border-top:none;border-right:none;border-bottom:none;border-l=
eft:1.5pt solid blue;padding:0cm 0cm 0cm 4pt">
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Pascal Thubert (pthubert)
<br>
<b>Sent:</b> mercredi 30 octobre 2019 13:59<br>
<b>To:</b> Routing Over Low power and Lossy networks &lt;<a href=3D"mailto:=
roll@ietf.org" target=3D"_blank">roll@ietf.org</a>&gt;<br>
<b>Cc:</b> Michael Richardson &lt;<a href=3D"mailto:mcr+ietf@sandelman.ca" =
target=3D"_blank">mcr+ietf@sandelman.ca</a>&gt;<br>
<b>Subject:</b> RE: [Roll] Making RUL draft normative reference in useofrpl=
info<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span>Hello Rahul, all<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p>
<div style=3D"border-top:none;border-right:none;border-bottom:none;border-l=
eft:1.5pt solid blue;padding:0cm 0cm 0cm 4pt">
<div>
<div style=3D"border-right:none;border-bottom:none;border-left:none;border-=
top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> Roll &lt;<a href=3D"mailto:roll-bounces@ietf.org" target=3D"_bl=
ank">roll-bounces@ietf.org</a>&gt;
<b>On Behalf Of </b>Rahul Jadhav<br>
<b>Sent:</b> dimanche 27 octobre 2019 05:48<br>
<b>To:</b> roll &lt;<a href=3D"mailto:roll@ietf.org" target=3D"_blank">roll=
@ietf.org</a>&gt;<br>
<b>Cc:</b> Michael Richardson &lt;<a href=3D"mailto:mcr+ietf@sandelman.ca" =
target=3D"_blank">mcr+ietf@sandelman.ca</a>&gt;<br>
<b>Subject:</b> Re: [Roll] Making RUL draft normative reference in useofrpl=
info<u></u><u></u></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Thank you=
 for clarifying the thoughts in the mail. I am sure I would not have caught=
 a drift if this would have been talked about directly (without a mail) dur=
ing the 106-session.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Specifica=
lly, I want to talk about the following text:=C2=A0<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">&quot; <u=
></u><u></u></span></p>
<table border=3D"0" cellpadding=3D"0" style=3D"background:white">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;;color:rgb(50,49,48)">This specification updates RPL [RFC6550] to R=
ECOMMEND that external</span><span style=3D"font-family:&quot;Segoe UI&quot=
;,sans-serif;color:rgb(50,49,48)"><u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black;display:no=
ne"><u></u>=C2=A0<u></u></span></p>
<table border=3D"0" cellpadding=3D"0" style=3D"background:white">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;;color:rgb(50,49,48)">targets are advertised using Non-Storing Mode=
 signaling even in a</span><span style=3D"font-family:&quot;Segoe UI&quot;,=
sans-serif;color:rgb(50,49,48)"><u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black;display:no=
ne"><u></u>=C2=A0<u></u></span></p>
<table border=3D"0" cellpadding=3D"0" style=3D"background:white">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;;color:rgb(50,49,48)">Storing-Mode network. This way, all packets t=
o an external target</span><span style=3D"font-family:&quot;Segoe UI&quot;,=
sans-serif;color:rgb(50,49,48)"><u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black;display:no=
ne"><u></u>=C2=A0<u></u></span></p>
<table border=3D"0" cellpadding=3D"0" style=3D"background:white">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;;color:rgb(50,49,48)">reach the Root that can encapsulate them, and=
 the Root is informed of</span><span style=3D"font-family:&quot;Segoe UI&qu=
ot;,sans-serif;color:rgb(50,49,48)"><u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black;display:no=
ne"><u></u>=C2=A0<u></u></span></p>
<table border=3D"0" cellpadding=3D"0" style=3D"background:white">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Courier N=
ew&quot;;color:rgb(50,49,48)">the address of the 6LR that terminates the IP=
-in-IP tunnel.</span><span style=3D"font-family:&quot;Segoe UI&quot;,sans-s=
erif;color:rgb(50,49,48)"><u></u><u></u></span></p>
</td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">&quot;<u>=
</u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">I underst=
and the reason why we need IP-in-IP tunnel terminating at the 6LR advertisi=
ng the external-target. But when we say that only external targets are adve=
rtised using non-storing mode signaling
 even in a storing MOP, what we are asking is that all the 6LRs en-route (a=
nd not only the 6LR to which the external target is attaching) handle the e=
xternal target in non-storing mode.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">This mean=
s that all 6LRs in the network need to be capable of non-storing and storin=
g mode even though the MOP advertised was for storing MOP only. This has im=
plications for behaviour during parent
 switching.=C2=A0The text opens up a lot of room for interpretations and un=
covered-scenarios. I am apprehensive of adding such text to useofrplinfo.<u=
></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt"><u></u>=C2=A0<u></u><=
/span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt; <u></u><u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">( : Misunderstanding warning : =
) <u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The =E2=80=98signaling=E2=80=99=
 discussed in that text is the control plane, more specifically the DAO tha=
t is sent by the 6LR directly to the root as opposed to percolating child t=
o parent like other internal DAO message in storing
 mode. In the data plane you have IP in IP to the 6LR and no RH, so the int=
ermediate routers just see a packet to the 6LR and need not worry whether t=
here=E2=80=99s an IP packet inside.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We certainly need to clarify. W=
hat about:<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=E2=80=9C<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">This specificati=
on updates RPL [RFC6550] to RECOMMEND that external<u></u><u></u></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">targets are adve=
rtised using Non-Storing Mode DAO messaging even in a<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Storing-Mode net=
work. This way, external routes are not advertised within<u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">the DODAG and al=
l packets to an external target reach the Root like normal<u></u><u></u></s=
pan></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span style=3D"font-siz=
e:10pt;font-family:&quot;Courier New&quot;">non-storing mode traffic.
</span><span lang=3D"EN-US" style=3D"font-size:10pt;font-family:&quot;Couri=
er New&quot;">The Non-Storing Mode DAO informs the Root of the<u></u><u></u=
></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">address of the 6=
LR that injects the external route, and the root uses IP-in-IP<u></u><u></u=
></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:5.25pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">encapsulation to that 6LR, which terminates t=
he IP-in-IP tunnel and forwards<u></u><u></u></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:9.85pt"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;"><u></u>=C2=A0<u>=
</u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10pt;font-fa=
mily:&quot;Courier New&quot;">the original packet outside the RPL domain</s=
pan><span lang=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">.<u>=
</u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">=E2=80=9C<u></u><u></u></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<u></u><u></u></=
span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Regarding=
 following, &quot;</span><span style=3D"font-size:12pt;font-family:&quot;Se=
goe UI&quot;,sans-serif;color:rgb(50,49,48);background:white">Do we limit t=
o the ground common with the RUL draft for which there
 is a defined RPL behavior, or do we define a new different thing where Use=
-Of-RPL-Info handles an unclear superset of the nodes that support the RUL =
draft and for which there is a defined RPL operation?=C2=A0&quot;</span><sp=
an style=3D"font-size:12pt;color:black"><u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">I certain=
ly feel that we should limit the ground common for which there is a defined=
 RPL behavior.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">In genera=
l, unaware-leaves seem to have a much broader impact than I initially thoug=
ht.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt"><u></u>=C2=A0<u></u><=
/span></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;Pascal&gt;<u></u><u></u></s=
pan></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Cool, we agree=C2=A0: ) <u></u>=
<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&lt;/Pascal&gt;<u></u><u></u></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12pt"><u></u=
>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:12pt;color:b=
lack">Regards,<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black">Rahul<u><=
/u><u></u></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:12pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center">
<hr size=3D"2" width=3D"98%" align=3D"center">
</div>
<div id=3D"gmail-m_-3889915712851529246divRplyFwdMsg">
<p class=3D"MsoNormal">Then that text was stripped off the RUL draft and pl=
aced it in the Use-Of-RPL-Info because it was really text on the forwarding=
 behavior, which is different if some assumptions cannot be made on the ext=
ernal destination (need to encaps
 to the parent when it is not necessarily needed for a RUL). That new text =
also fills a gap in Use-Of-RPL-Info and is completely localized in a=C2=A0 =
new section. the=C2=A0 text was moved about routing from the RUL draft to t=
hat section. Since it is not published yet,
 please find that text inline below:<u></u><u></u></p>
</div>
<div>
<div>
<div>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=C2=A0</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=E2=80=9C</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt">=C2=A0</span><u></u><u></u></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">4.1. Updates to =
RFC6550: Advertise External Routes with Non-Storing</span><u></u><u></u></p=
>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span style=3D"font-siz=
e:10pt;font-family:&quot;Courier New&quot;">Mode Signaling.</span><u></u><u=
></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Section 6.7.8. o=
f [RFC6550] introduces the &#39;E&#39; flag that is set to</span><u></u><u>=
</u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">indicate that th=
e 6LR that generates the DAO redistributes external</span><u></u><u></u></p=
>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">targets into the=
 RPL network. An external Target is a Target that</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">has been learned=
 through an alternate protocol, for instance a route</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">to a prefix that=
 is outside the RPL domain but reachable via a 6LR.</span><u></u><u></u></p=
>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Being outside of=
 the RPL domain, a node that is reached via an</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">external target =
cannot be guaranteed to ignore the RPL artifacts and</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">cannot be expect=
ed to process the [RFC8138] compression correctly.</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">This means that =
the RPL artifacts should be contained in an IP-in-IP</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">encapsulation th=
at is removed by the 6LR, and that any remaining</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">compression shou=
ld be expanded by the 6LR before it forwards a packet</span><u></u><u></u><=
/p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span style=3D"font-siz=
e:10pt;font-family:&quot;Courier New&quot;">outside the RPL domain.</span><=
u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">This specificati=
on updates RPL [RFC6550] to RECOMMEND that external</span><u></u><u></u></p=
>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">targets are adve=
rtised using Non-Storing Mode signaling even in a</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">Storing-Mode net=
work. This way, all packets to an external target</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">reach the Root t=
hat can encapsulate them, and the Root is informed of</span><u></u><u></u><=
/p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">the address of t=
he 6LR that terminates the IP-in-IP tunnel.=C2=A0</span><span style=3D"font=
-size:10pt;font-family:&quot;Courier New&quot;">In case</span><u></u><u></u=
></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">of an external t=
arget, the Root SHOULD use the same IP-in-IP</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">encapsulation fo=
r packets that it generates or that are originated</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">within the RPL d=
omain as if the packets were coming from the</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span style=3D"font-siz=
e:10pt;font-family:&quot;Courier New&quot;">Internet.</span><u></u><u></u><=
/p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">A RUL is a speci=
al case of external target when the target is</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0cm"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">actually a host =
and it is known to support a consumed Routing Header</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">and to ignore a =
HbH header as prescribed by [RFC8200]..=C2=A0</span><span style=3D"font-siz=
e:10pt;font-family:&quot;Courier New&quot;">The target</span><u></u><u></u>=
</p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">may have been le=
arned through as a host route or may have been</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">registered to th=
e 6LR using [RFC8505]. IP-in-IP encapsulation MAY be</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">avoided for Root=
 to RUL communication if the RUL is known to process</span><u></u><u></u></=
p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">the packets as f=
orwarded by the parent 6LR without decapsulation.</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">In order to enab=
le IP-in-IP all the way to a 6LN, it is beneficial</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">that the 6LN sup=
ports decapsulating IP-in-IP, but that is not assumed</span><u></u><u></u><=
/p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">by [RFC8504]. If=
 the 6LN is a RUL, the Root that encapsulates a</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">packet SHOULD te=
rminate the tunnel at a parent 6LR unless it is aware</span><u></u><u></u><=
/p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">that the RUL sup=
ports IP-in-IP decapsulation.</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">A node that is r=
eachable over an external route is not expected to</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">support [RFC8138=
]. Whether a decapsulation took place or not and</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">even when the 6L=
R is delivering the packet to a RUL, the 6LR that</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">injected an exte=
rnal route MUST uncompress the packet before</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"MsoNormal"><span style=3D"display:none"><u></u>=C2=A0<u></u></s=
pan></p>
<table border=3D"0" cellpadding=3D"0">
<tbody>
<tr>
<td style=3D"padding:0.75pt">
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US" st=
yle=3D"font-size:10pt;font-family:&quot;Courier New&quot;">forwarding over =
that external route.</span><u></u><u></u></p>
</td>
</tr>
<tr>
<td style=3D"padding:0.75pt"></td>
</tr>
</tbody>
</table>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=E2=80=9C</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=C2=A0</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">So=
 where are we?</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=C2=A0</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">We=
 need to agree on what we place in the definition of a RUL for which=C2=A0U=
se-Of-RPL-Info presents a special behavior. Do we limit to the ground commo=
n with the RUL draft for which there is a defined RPL behavior, or do
 we define a new different thing where Use-Of-RPL-Info handles an unclear s=
uperset of the nodes that support the RUL draft and for which there is a de=
fined RPL operation? I do not see the need because if (ever, though doubtfu=
l) a new draft defines the RPL operation
 for one version of =E2=80=9Cthat guy=E2=80=9D then is can also say whether=
 =E2=80=9Cthat guy=E2=80=9D should be handled as a RUL or as an =E2=80=9Cex=
ternal destination=E2=80=9D=C2=A0in=C2=A0Use-Of-RPL-Info.</span><u></u><u><=
/u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=C2=A0</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">Th=
us the proposal to that that the operation of a =E2=80=9CRUL=E2=80=9D in Us=
e-Of-RPL-Info is for a node that supports the RUL draft, and make the RUL d=
raft a normative reference to define what that exactly mean. If we do so, M=
ISSREF
 will play its guardian role to ensure that Use-Of-RPL-Info is consistent w=
ith the RUL draft till the last minute because it is not published too hast=
ly.</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><u></u>=C2=A0<u></u></p=
>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">Lo=
oking forward to your reactions,</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><u></u>=C2=A0<u></u></p=
>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">In=
es, Pascal and Michael.</span><u></u><u></u></p>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><u></u>=C2=A0<u></u></p=
>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><u></u>=C2=A0<u></u></p=
>
<p class=3D"gmail-m_-3889915712851529246xmsonormal"><span lang=3D"EN-US">=
=C2=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>

</blockquote></div>

--000000000000d1d5020596366543--


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Subject: [Roll] [ROLL] Projected DAO and Extended MOP
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Hello All

If my understanding is not wrong ID draft-ietf-roll-mopex-cap-00 is
introduced to support Projected DAO. I think Extended MOP is not required
for projected DAO.

Objective of P-DAO is to enable a path computing element (PCE) with global
topological view of the network, knowledge of device capabilities and
various network parameters to compute and install optimized (TE) routes to
meet certain application requirements (Application scenarios requiring P2P
path between devices).

Why Projected DAO is more of a Capability Compare to the Mode of Operation?

1-     The core mesh network will always operate either in Storing or
Non-Storing mode. Projected DAO will use the underlying topology to compute
more efficient p-routes and install them either in storing or non-storing
mode. A new LR, irrespective of it supports projected DAO or not it has to
join the network. This joining decision is completely based on which mode
global network is operating and the new LR supports it or not.


2-     P-DAO is more like a capability. This capability mostly includes if
the LR has enough memory to store the P-Routes and support to do SRH based
packet forwarding.

Let=E2=80=99s consider the below scenarios

1=E2=80=94Global Network is Storing


   - P-Route to be installed in Storing mode

For this to work all the LR need to have P-Route table


   -   P-Route to be installed is non-storing

Just the Ingress node must store the route entry in the P-Route table and
all other intermediate LRs in the P-Route process the SRH header and
forward the packet.

2=E2=80=94Global Network is Non-Storing

               Same requirement as above mentioned in storing mode case.
So P-DAO is independent of global mode of operation of the LLN.

What do you all think?

Thanks
Rabi

--000000000000d4de7305963dfb14
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hello All</div><div><br></div><div><p class=3D"MsoNor=
mal" style=3D"margin:0cm 0cm 8pt;line-height:15.6933px;font-size:11pt;font-=
family:Calibri,sans-serif">If my understanding is not wrong ID draft-ietf-r=
oll-mopex-cap-00 is introduced to support Projected DAO. I think Extended M=
OP is not required for projected DAO.</p><p class=3D"MsoNormal" style=3D"ma=
rgin:0cm 0cm 8pt;text-align:justify;line-height:15.6933px;font-size:11pt;fo=
nt-family:Calibri,sans-serif">Objective of P-DAO is to enable a=C2=A0<span =
lang=3D"EN-US">path computing element (PCE) with global topological view of=
 the network, knowledge of device capabilities and various network paramete=
rs to compute and install optimized (TE) routes to meet certain application=
 requirements (Application scenarios requiring P2P path between devices).</=
span></p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 8pt;text-align:just=
ify;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><s=
pan lang=3D"EN-US">Why Projected DAO is more of a Capability Compare to the=
 Mode of Operation?</span></p><p style=3D"text-align:justify;margin:0cm 0cm=
 0.0001pt 36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,san=
s-serif"><span lang=3D"EN-US">1-<span style=3D"font-variant-numeric:normal;=
font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-heigh=
t:normal;font-family:&quot;Times New Roman&quot;">=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0</span></span><span lang=3D"EN-US">The core mesh network will always =
operate either in Storing or Non-Storing mode. Projected DAO will use the u=
nderlying topology to compute more efficient p-routes and install them eith=
er in storing or non-storing mode. A new LR, irrespective of it supports pr=
ojected DAO or not it has to join the network. This joining decision is com=
pletely based on which mode global network is operating and the new LR supp=
orts it or not.</span></p><p style=3D"text-align:justify;margin:0cm 0cm 0.0=
001pt 36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-se=
rif"><span lang=3D"EN-US"><br></span></p><p style=3D"text-align:justify;mar=
gin:0cm 0cm 8pt 36pt;line-height:15.6933px;font-size:11pt;font-family:Calib=
ri,sans-serif"><span lang=3D"EN-US">2-<span style=3D"font-variant-numeric:n=
ormal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line=
-height:normal;font-family:&quot;Times New Roman&quot;">=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0</span></span><span lang=3D"EN-US">P-DAO is more like a capabil=
ity. This capability mostly includes if the LR has enough memory to store t=
he P-Routes and support to do SRH based packet forwarding.</span></p><p cla=
ss=3D"MsoNormal" style=3D"margin:0cm 0cm 8pt;text-align:justify;text-indent=
:36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif">=
<span lang=3D"EN-US">Let=E2=80=99s consider the below scenarios</span></p><=
p class=3D"MsoNormal" style=3D"margin:0cm 0cm 8pt;text-align:justify;text-i=
ndent:36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-se=
rif"><span lang=3D"EN-US">1=E2=80=94Global Network is Storing</span></p></d=
iv><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 8pt;text-align:justify;te=
xt-indent:36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,san=
s-serif"></p><ul><ul><li><span style=3D"font-size:11pt;text-indent:36pt">P-=
Route to be installed in Storing mode</span></li></ul></ul><p></p><div><p s=
tyle=3D"text-align:justify;text-indent:36pt;margin:0cm 0cm 0.0001pt 36pt;li=
ne-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><span la=
ng=3D"EN-US">For this to work all the LR need to have P-Route table</span><=
/p><p style=3D"text-align:justify;text-indent:36pt;margin:0cm 0cm 0.0001pt =
36pt;line-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><=
/p><ul><li><span lang=3D"EN-US" style=3D"font-size:11pt;text-indent:36pt"><=
span style=3D"font-variant-numeric:normal;font-variant-east-asian:normal;fo=
nt-stretch:normal;font-size:7pt;line-height:normal;font-family:&quot;Times =
New Roman&quot;">=C2=A0=C2=A0</span></span><span lang=3D"EN-US" style=3D"fo=
nt-size:11pt;text-indent:36pt">P-Route to be installed is non-storing</span=
></li></ul><p></p><p style=3D"margin:0cm 0cm 8pt 72pt;text-align:justify;li=
ne-height:15.6933px;font-size:11pt;font-family:Calibri,sans-serif"><span la=
ng=3D"EN-US">Just the Ingress node must store the route entry in the P-Rout=
e table and all other intermediate LRs in the P-Route process the SRH heade=
r and forward the packet.</span></p><p class=3D"MsoNormal" style=3D"margin:=
0cm 0cm 8pt;text-align:justify;text-indent:36pt;line-height:15.6933px;font-=
size:11pt;font-family:Calibri,sans-serif"><span lang=3D"EN-US">2=E2=80=94Gl=
obal Network is Non-Storing</span></p><p class=3D"MsoNormal" style=3D"margi=
n:0cm 0cm 8pt;text-align:justify;text-indent:36pt;line-height:15.6933px;fon=
t-size:11pt;font-family:Calibri,sans-serif"><span lang=3D"EN-US">=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
 Same requirement as above mentioned in storing mode case.</span></p><span =
lang=3D"EN-US" style=3D"font-size:11pt;line-height:15.6933px;font-family:Ca=
libri,sans-serif">So P-DAO is independent of global mode of operation of th=
e LLN.</span>=C2=A0</div><div><br></div><div>What do you all think?</div><d=
iv><br></div><div>Thanks</div><div>Rabi</div><div><br></div></div>

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