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From: CARLOS JESUS BERNARDOS CANO <cjbc@it.uc3m.es>
Date: Mon, 2 Mar 2020 22:31:27 +0100
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To: Carlos Pignataro <cpignata@cisco.com>
Cc: "<int-dir@ietf.org>" <int-dir@ietf.org>, last-call@ietf.org,  draft-ietf-dmm-distributed-mobility-anchoring.all@ietf.org,  dmm <dmm@ietf.org>
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Subject: Re: [Int-dir] Intdir telechat review of draft-ietf-dmm-distributed-mobility-anchoring-14
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Dear Carlos,

Thanks a lot for your review. Please see inline below.


On Sat, Feb 29, 2020 at 4:05 AM Carlos Pignataro via Datatracker <
noreply@ietf.org> wrote:

> Reviewer: Carlos Pignataro
> Review result: Ready with Nits
>
> I am an assigned INT directorate reviewer for this Internet-Draft.  These
> comments were written primarily for the benefit of the Internet Area
> Directors.
> Document editors and shepherd(s) should treat these comments just like th=
ey
> would treat comments from any other IETF contributors and resolve them
> along
> with any other Last Call comments that have been received. For more
> details on
> the INT Directorate, see http://www.ietf.org/iesg/directorate.html.
>
> I hope these comments are clear and useful.
>
> As requested, from the Internet area Directorate review, these two DMM
> documents are being reviewed together:
> * draft-ietf-dmm-distributed-mobility-anchoring-14
> * draft-ietf-dmm-pmipv6-dlif-05
>
> This document defines distributed mobility anchoring, in terms of the
> different configurations and functions to provide IP mobility support,
> including network-based or host-based mobility support.
>
> The intended status is Informational. It is a very well written and
> comprehensive document. It is technically sound.
>
> No major or minor issues.
>
> Nits:
>
> A set of small nits for your consideration.
>
> 1.  Introduction
>
>    As a Mobile Node (MN) attaches to an access router and establishes a
>    link between them, a /64 IPv6 prefix anchored to the router may be
>    assigned to the link for exclusive use by the MN [RFC6459].  The MN
>    may then configure a global IPv6 address from this prefix and use it
>    as the source IP address in a flow to communicate with its
>    correspondent node (CN).
>
> Capitalize:
> s/correspondent node/Correspondent Node/
>

[CB] OK, fixed in -15 (to be submitted).


>
> 2.  Conventions and Terminology
>
>    These include terms such as mobile node (MN), correspondent node
>    (CN), home agent (HA), home address (HoA), care-of-address (CoA),
>    local mobility anchor (LMA), and mobile access gateway (MAG).
>
> Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCore=
spondent Node=E2=80=9D, etc.
>

[CB] OK, fixed in -15 (to be submitted).


> Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.
> Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=E2=
=80=9D)
>

[CB] OK, fixed in -15 (to be submitted).


>
> 4.3.  Mobility case, anchor relocation
>
>    The IP prefix/address anchoring may move without changing the IP
>    prefix/address of the flow.  Here the LM and FM functions in Figure 1
>    in Section 3.1 are implemented as shown in Figure 7.
>
> =E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D
>

[CB] OK, fixed in -15 (to be submitted).


>
>                          Figure 7: Anchor mobility
>
> Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=9D=
 instead of =E2=80=98Anchor
> mobility=E2=80=9D?
>

[CB] OK, makes sense. Fixed in -15 (to be submitted).


> 5.  Security Considerations
>
>    As stated in [RFC7333], "a DMM solution MUST supportany security
>
> s/supportany/support any/
>

[CB] OK, fixed in -15 (to be submitted).


>
> 8.2. Informative References
>
> The relationship of this document and draft-ietf-dmm-deployment-models is
> mostly clear, thank you for that.
>

[CB] Related to this, we got a comment from Mirja. Since
draft-ietf-dmm-deployment-models is not going to progress any further,
we'll try to remove the reference and incorporate the needed content to
make our document self contained without the reference.


>
> I hope you fid these comments useful.
>

[CB] Very much indeed. Thanks a lot!

Carlos


>
> Carlos Pignataro.
>
>
>
>

--000000000000e21a70059fe5e92d
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Dear Carlos,<div><br></div><div>Thanks a =
lot for your review. Please see inline below.</div><div><br></div></div><br=
><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, F=
eb 29, 2020 at 4:05 AM Carlos Pignataro via Datatracker &lt;<a href=3D"mail=
to:noreply@ietf.org">noreply@ietf.org</a>&gt; wrote:<br></div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px soli=
d rgb(204,204,204);padding-left:1ex">Reviewer: Carlos Pignataro<br>
Review result: Ready with Nits<br>
<br>
I am an assigned INT directorate reviewer for this Internet-Draft.=C2=A0 Th=
ese<br>
comments were written primarily for the benefit of the Internet Area Direct=
ors.<br>
Document editors and shepherd(s) should treat these comments just like they=
<br>
would treat comments from any other IETF contributors and resolve them alon=
g<br>
with any other Last Call comments that have been received. For more details=
 on<br>
the INT Directorate, see <a href=3D"http://www.ietf.org/iesg/directorate.ht=
ml" rel=3D"noreferrer" target=3D"_blank">http://www.ietf.org/iesg/directora=
te.html</a>.<br>
<br>
I hope these comments are clear and useful.<br>
<br>
As requested, from the Internet area Directorate review, these two DMM<br>
documents are being reviewed together:<br>
* draft-ietf-dmm-distributed-mobility-anchoring-14<br>
* draft-ietf-dmm-pmipv6-dlif-05<br>
<br>
This document defines distributed mobility anchoring, in terms of the<br>
different configurations and functions to provide IP mobility support,<br>
including network-based or host-based mobility support.<br>
<br>
The intended status is Informational. It is a very well written and<br>
comprehensive document. It is technically sound.<br>
<br>
No major or minor issues.<br>
<br>
Nits:<br>
<br>
A set of small nits for your consideration.<br>
<br>
1.=C2=A0 Introduction<br>
<br>
=C2=A0 =C2=A0As a Mobile Node (MN) attaches to an access router and establi=
shes a<br>
=C2=A0 =C2=A0link between them, a /64 IPv6 prefix anchored to the router ma=
y be<br>
=C2=A0 =C2=A0assigned to the link for exclusive use by the MN [RFC6459].=C2=
=A0 The MN<br>
=C2=A0 =C2=A0may then configure a global IPv6 address from this prefix and =
use it<br>
=C2=A0 =C2=A0as the source IP address in a flow to communicate with its<br>
=C2=A0 =C2=A0correspondent node (CN).<br>
<br>
Capitalize:<br>
s/correspondent node/Correspondent Node/<br></blockquote><div><br></div><di=
v>[CB] OK, fixed in -15 (to be submitted).=C2=A0</div><div>=C2=A0</div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
:1px solid rgb(204,204,204);padding-left:1ex">
<br>
2.=C2=A0 Conventions and Terminology<br>
<br>
=C2=A0 =C2=A0These include terms such as mobile node (MN), correspondent no=
de<br>
=C2=A0 =C2=A0(CN), home agent (HA), home address (HoA), care-of-address (Co=
A),<br>
=C2=A0 =C2=A0local mobility anchor (LMA), and mobile access gateway (MAG).<=
br>
<br>
Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCoresp=
ondent Node=E2=80=9D, etc.<br></blockquote><div><br></div><div>[CB] OK, fix=
ed in -15 (to be submitted).</div><div><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">
<br>
Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.<br=
>
Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=E2=
=80=9D)<br></blockquote><div><br></div><div>[CB] OK, fixed in -15 (to be su=
bmitted).=C2=A0</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex">
<br>
4.3.=C2=A0 Mobility case, anchor relocation<br>
<br>
=C2=A0 =C2=A0The IP prefix/address anchoring may move without changing the =
IP<br>
=C2=A0 =C2=A0prefix/address of the flow.=C2=A0 Here the LM and FM functions=
 in Figure 1<br>
=C2=A0 =C2=A0in Section 3.1 are implemented as shown in Figure 7.<br>
<br>
=E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D<br></blockquote=
><div><br></div><div>[CB] OK, fixed in -15 (to be submitted).=C2=A0</div><d=
iv>=C2=A0</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">
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0Figure 7: Anchor mobility<br>
<br>
Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=9D i=
nstead of =E2=80=98Anchor mobility=E2=80=9D?<br></blockquote><div><br></div=
><div>[CB] OK, makes sense. Fixed in -15 (to be submitted).=C2=A0=C2=A0</di=
v><div><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">
<br>
5.=C2=A0 Security Considerations<br>
<br>
=C2=A0 =C2=A0As stated in [RFC7333], &quot;a DMM solution MUST supportany s=
ecurity<br>
<br>
s/supportany/support any/<br></blockquote><div><br></div><div>[CB] OK, fixe=
d in -15 (to be submitted).=C2=A0</div><div>=C2=A0</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">
<br>
8.2. Informative References<br>
<br>
The relationship of this document and draft-ietf-dmm-deployment-models is<b=
r>
mostly clear, thank you for that.<br></blockquote><div><br></div><div>[CB] =
Related to this, we got a comment from Mirja. Since draft-ietf-dmm-deployme=
nt-models is not going to progress any further, we&#39;ll try to remove the=
 reference and incorporate the needed content to make our document self con=
tained without the reference.</div><div>=C2=A0</div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex">
<br>
I hope you fid these comments useful.<br></blockquote><div><br></div><div>[=
CB] Very much indeed. Thanks a lot!</div><div><br></div><div>Carlos</div><d=
iv>=C2=A0</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">
<br>
Carlos Pignataro.<br>
<br>
<br>
<br>
</blockquote></div></div>

--000000000000e21a70059fe5e92d--


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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: CARLOS JESUS BERNARDOS CANO <cjbc@it.uc3m.es>
CC: "<int-dir@ietf.org>" <int-dir@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>, "draft-ietf-dmm-distributed-mobility-anchoring.all@ietf.org" <draft-ietf-dmm-distributed-mobility-anchoring.all@ietf.org>, dmm <dmm@ietf.org>
Thread-Topic: Intdir telechat review of draft-ietf-dmm-distributed-mobility-anchoring-14
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Date: Mon, 2 Mar 2020 22:26:33 +0000
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Subject: Re: [Int-dir] Intdir telechat review of draft-ietf-dmm-distributed-mobility-anchoring-14
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--_000_F767356C1ED44957B32A92B32587772Aciscocom_--


From nobody Mon Mar  2 18:27:57 2020
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From: Bernie Volz via Datatracker <noreply@ietf.org>
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Cc: draft-cheshire-sudn-ipv4only-dot-arpa.all@ietf.org, last-call@ietf.org
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Date: Mon, 02 Mar 2020 18:27:54 -0800
Archived-At: <https://mailarchive.ietf.org/arch/msg/int-dir/qVAi6wDQ7YlYFxoAZgmrHW5s1Os>
Subject: [Int-dir] Intdir telechat review of draft-cheshire-sudn-ipv4only-dot-arpa-16
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Reviewer: Bernie Volz
Review result: Ready

I read this document as the IntDir review deadline is up and it looks good. I
did not find any issues and recommend moving forward with it.



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From: "Bernie Volz (volz)" <volz@cisco.com>
To: "int-dir@ietf.org" <int-dir@ietf.org>
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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
To: "Bernie Volz (volz)" <volz=40cisco.com@dmarc.ietf.org>, "int-dir@ietf.org" <int-dir@ietf.org>
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Subject: Re: [Int-dir] Intdir telechat review of draft-cheshire-sudn-ipv4only-dot-arpa-16
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From: CARLOS JESUS BERNARDOS CANO <cjbc@it.uc3m.es>
Date: Sun, 8 Mar 2020 19:43:00 +0100
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To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: "int-dir@ietf.org" <int-dir@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>,  "draft-ietf-dmm-pmipv6-dlif.all@ietf.org" <draft-ietf-dmm-pmipv6-dlif.all@ietf.org>, "dmm@ietf.org" <dmm@ietf.org>
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Hi Carlos,

Thanks for your review. Please find inline below my comments.

On Sat, Feb 29, 2020 at 4:15 AM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Reviewer: Carlos Pignataro
> Review result: Ready with Nits
>
> I am an assigned INT directorate reviewer for this Internet-Draft.  These
> comments were written primarily for the benefit of the Internet Area
> Directors.
> Document editors and shepherd(s) should treat these comments just like th=
ey
> would treat comments from any other IETF contributors and resolve them
> along
> with any other Last Call comments that have been received. For more
> details on
> the INT Directorate, see http://www.ietf.org/iesg/directorate.html.
>
> I hope these comments are clear and useful.
>
> As requested, from the Internet area Directorate review, these two DMM
> documents are being reviewed together:
> * draft-ietf-dmm-distributed-mobility-anchoring-14
> * draft-ietf-dmm-pmipv6-dlif-05
>
> This document defines distributed mobility anchoring, in terms of the
> different configurations and functions to provide IP mobility support,
> including network-based or host-based mobility support.
>
> The intended status is Informational. It is a very well written and
> comprehensive
> document. It is technically sound.
>
> No major or minor issues.
>
> Nits:
>
> A set of small nits for your consideration.
>
> 1.  Introduction
>
>    As a Mobile Node (MN) attaches to an access router and establishes a
>    link between them, a /64 IPv6 prefix anchored to the router may be
>    assigned to the link for exclusive use by the MN [RFC6459].  The MN
>    may then configure a global IPv6 address from this prefix and use it
>    as the source IP address in a flow to communicate with its
>    correspondent node (CN).
>
> Capitalize:
> s/correspondent node/Correspondent Node/
>
> 2.  Conventions and Terminology
>
>    These include terms such as mobile node (MN), correspondent node
>    (CN), home agent (HA), home address (HoA), care-of-address (CoA),
>    local mobility anchor (LMA), and mobile access gateway (MAG).
>
> Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCore=
spondent Node=E2=80=9D, etc.
>
> Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.
> Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=E2=
=80=9D)
>
> 4.3.  Mobility case, anchor relocation
>
>    The IP prefix/address anchoring may move without changing the IP
>    prefix/address of the flow.  Here the LM and FM functions in Figure 1
>    in Section 3.1 are implemented as shown in Figure 7.
>
> =E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D
>
>                          Figure 7: Anchor mobility
>
> Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=9D=
 instead of =E2=80=98Anchor
> mobility=E2=80=9D?
>
> 5.  Security Considerations
>
>    As stated in [RFC7333], "a DMM solution MUST supportany security
>
> s/supportany/support any/
>
> 8.2. Informative References
>
> The relationship of this document and draft-ietf-dmm-deployment-models is
> mostly clear, thank you for that.
>
> I hope you fid these comments useful.
>
> Carlos Pignataro.
>
>
> https://tools.ietf.org/html/draft-ietf-dmm-pmipv6-dlif-05
>
> I am an assigned INT directorate reviewer for this Internet-Draft.  These
> comments were written primarily for the benefit of the Internet Area
> Directors.
> Document editors and shepherd(s) should treat these comments just like th=
ey
> would treat comments from any other IETF contributors and resolve them
> along
> with any other Last Call comments that have been received. For more
> details on
> the INT Directorate, see http://www.ietf.org/iesg/directorate.html.
>
> I hope these comments are clear and useful.
>
> As requested, from the Internet area Directorate review, these two DMM
> documents are being reviewed together:
> * draft-ietf-dmm-distributed-mobility-anchoring-14
> * draft-ietf-dmm-pmipv6-dlif-05
>
> This document provides an approach to distributed mobility management
> by extending network-based mobility protocols (like Proxy Mobile IPv6). I=
n
> this solution, mobility sessions are anchored at the last IP hop router.
>
> This document=E2=80=99s intended status is Experimental. It is well writt=
en for
> such a complex comprehensive document, and technically complete and
> sensible.
>
> No major or minor issues.
>
> Nits:
>
> Please find some small comments for your consideration:
>
>
> 4.1.  Proxy Binding Update
>
>    A new flag (D) is included in the Proxy Binding Update to indicate
>    that the Proxy Binding Update is coming from a Mobility Anchor and
>    Access Router and not from a mobile access gateway.  The rest of the
>    Proxy Binding Update format remains the same as defined in [RFC5213].
>
>    0               1               2               3
>    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
>                                    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                                    |            Sequence #         |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>    |A|H|L|K|M|R|P|F|T|B|S|D| Reser |            Lifetime           |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> However, for RFC 5213 S 8.1:
>
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>       |A|H|L|K|M|R|P|  Reserved       |            Lifetime           |
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> So, therefore, seems like:
> 1. The definition of Flags F, T, B, and S is missing.
> 2. =E2=80=9CReser=E2=80=9D is not really clear and =E2=80=9CRsrvd=E2=80=
=9D seems to fit and be more
> unambiguous.
>

[CB] I've replaced "Reser" with "Rsrvd". The other flags are defined in
other RFCs, published after RFC 5213. Do I need to explain what each of
these flags do in this document? In any case, there might be additional
flags defined in the future, so I think it is not needed.


>
> 4.2.  Proxy Binding Acknowledgment
>
> =E2=80=A6
>   The rest of the Proxy Binding Acknowledgment format
>    remains the same as defined in [RFC5213].
>
>    0                   1                   2                   3
>    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
>                                    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                                    |   Status      |K|R|P|T|B|S|D| |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> However, from RFC 5213:
>
>        0                   1                   2                   3
>        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
>                                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>                                       |   Status      |K|R|P|Reserved |
>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> And thus, Flags T, B, S are not defined.
>

[CB] Same as before. Additional flags were defined and added to IANA
registry after RFC 5213 was published. I refer to RFC 5213 as it is where
the actual PBU/PBA format was specified (although they are basically BU/BA
with P flag set to 1).


> 4.3.  Anchored Prefix Option
>
>    Anchored Prefix
>
>       A sixteen-byte field containing the mobile node's IPv6 Anchored
>       Prefix.  Only the first Prefix Length bytes are valid for the
>       Anchored Prefix.  The rest of the bytes MUST be ignored.
>
> Not being pedantic, but:
> s/byte/octet/g // throughout.
> Or=E2=80=A6 "128-bit=E2=80=9D instead of =E2=80=9Csixteen-octet=E2=80=9D.
>

[CB] OK, I see that RFC 6275 uses only "octet", while RFC 5213 uses both
"octet" and "byte". But I agree that using only one is the right thing to
do. I've chosen "octet" as you suggested.


>
> 5.  IANA Considerations
>
>    This document defines six new mobility options that need to be
>    registered in the Mobility Options registry on the Mobile IPv6
>    parameters registry.  The required IANA actions are marked as IANA-1
>    to IANA-6.
>
> It would be useful to breakout the specific IANA requests in a table,
> sections, or other structure detailing how it should look in the IANA
> registries.
>

[CB] I've added some additional text, but following the approach of RFC
5213, which keeps it simple. I hope this is sufficient.


> 6. Security Considerations
>
> Is there underlying protection against spoofing that can be called out?
> This should be addressed in the Security Dir review, so I will not mentio=
n
> it here =F0=9F=99=82
>

[CB] We assume that using the mechanisms described for RFC 5213 is enough.
We have added some additional considerations for the risks/procedures that
are specific to the distributed solution.


> 8.2.  Informative References
>
>    [I-D.ietf-dmm-deployment-models]
>               Gundavelli, S. and S. Jeon, "DMM Deployment Models and
>               Architectural Considerations", draft-ietf-dmm-deployment-
>               models-04 (work in progress), May 2018.
>
> Since there are key definitions from this document, should this be
> Normative?
>

[CB] Since this document is not going to be progressed any further, we have
included the relevant terms in the terminology section and remove the
reference.


>
>    [RFC7333]  Chan, H., Ed., Liu, D., Seite, P., Yokota, H., and J.
>               Korhonen, "Requirements for Distributed Mobility
>               Management", RFC 7333, DOI 10.17487/RFC7333, August 2014,
>               <https://www.rfc-editor.org/info/rfc7333>.
>
> Similarly, should this reference be Normative instead of Informative?
>

[CB] I don't have a strong opinion here. I've moved it to Normative, but I
think it could stay as Informative as well.


> Appendix B.  Implementation experience
>
> Should this really be an Implementation Status section [RFC7942], as it
> describes a point in time rather than learnings?
>
> Should the Appendices clarify they make no normative specs?
>

[CB] Based also on other comments we have remove both appendixes.


> I hope these comments are useful.
>

[CB] Yes, they are indeed. Thanks!

Carlos


>
> Thank you very much,
>
> Carlos Pignataro.

--0000000000008472f305a05c429d
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi Carlos,<div><br></div><div>Thanks for =
your review. Please find inline below my comments.</div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, Feb 29, 202=
0 at 4:15 AM Carlos Pignataro (cpignata) &lt;<a href=3D"mailto:cpignata@cis=
co.com">cpignata@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex">Reviewer: Carlos Pignataro<br>
Review result: Ready with Nits<br>
<br>
I am an assigned INT directorate reviewer for this Internet-Draft.=C2=A0 Th=
ese<br>
comments were written primarily for the benefit of the Internet Area Direct=
ors.<br>
Document editors and shepherd(s) should treat these comments just like they=
<br>
would treat comments from any other IETF contributors and resolve them alon=
g<br>
with any other Last Call comments that have been received. For more details=
 on<br>
the INT Directorate, see <a href=3D"http://www.ietf.org/iesg/directorate.ht=
ml" rel=3D"noreferrer" target=3D"_blank">http://www.ietf.org/iesg/directora=
te.html</a>.<br>
<br>
I hope these comments are clear and useful.<br>
<br>
As requested, from the Internet area Directorate review, these two DMM <br>
documents are being reviewed together: <br>
* draft-ietf-dmm-distributed-mobility-anchoring-14<br>
* draft-ietf-dmm-pmipv6-dlif-05<br>
<br>
This document defines distributed mobility anchoring, in terms of the <br>
different configurations and functions to provide IP mobility support, <br>
including network-based or host-based mobility support.<br>
<br>
The intended status is Informational. It is a very well written and compreh=
ensive<br>
document. It is technically sound.<br>
<br>
No major or minor issues.<br>
<br>
Nits:<br>
<br>
A set of small nits for your consideration.<br>
<br>
1.=C2=A0 Introduction<br>
<br>
=C2=A0 =C2=A0As a Mobile Node (MN) attaches to an access router and establi=
shes a<br>
=C2=A0 =C2=A0link between them, a /64 IPv6 prefix anchored to the router ma=
y be<br>
=C2=A0 =C2=A0assigned to the link for exclusive use by the MN [RFC6459].=C2=
=A0 The MN<br>
=C2=A0 =C2=A0may then configure a global IPv6 address from this prefix and =
use it<br>
=C2=A0 =C2=A0as the source IP address in a flow to communicate with its<br>
=C2=A0 =C2=A0correspondent node (CN).<br>
<br>
Capitalize:<br>
s/correspondent node/Correspondent Node/<br>
<br>
2.=C2=A0 Conventions and Terminology<br>
<br>
=C2=A0 =C2=A0These include terms such as mobile node (MN), correspondent no=
de<br>
=C2=A0 =C2=A0(CN), home agent (HA), home address (HoA), care-of-address (Co=
A),<br>
=C2=A0 =C2=A0local mobility anchor (LMA), and mobile access gateway (MAG).<=
br>
<br>
Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCoresp=
ondent Node=E2=80=9D, etc.<br>
<br>
Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.<br=
>
Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=E2=
=80=9D)<br>
<br>
4.3.=C2=A0 Mobility case, anchor relocation<br>
<br>
=C2=A0 =C2=A0The IP prefix/address anchoring may move without changing the =
IP<br>
=C2=A0 =C2=A0prefix/address of the flow.=C2=A0 Here the LM and FM functions=
 in Figure 1<br>
=C2=A0 =C2=A0in Section 3.1 are implemented as shown in Figure 7.<br>
<br>
=E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0Figure 7: Anchor mobility<br>
<br>
Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=9D i=
nstead of =E2=80=98Anchor mobility=E2=80=9D?<br>
<br>
5.=C2=A0 Security Considerations<br>
<br>
=C2=A0 =C2=A0As stated in [RFC7333], &quot;a DMM solution MUST supportany s=
ecurity<br>
<br>
s/supportany/support any/<br>
<br>
8.2. Informative References<br>
<br>
The relationship of this document and draft-ietf-dmm-deployment-models is m=
ostly clear, thank you for that.<br>
<br>
I hope you fid these comments useful.<br>
<br>
Carlos Pignataro.<br>
<br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-dmm-pmipv6-dlif-05" rel=
=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-ietf-dm=
m-pmipv6-dlif-05</a><br>
<br>
I am an assigned INT directorate reviewer for this Internet-Draft.=C2=A0 Th=
ese<br>
comments were written primarily for the benefit of the Internet Area Direct=
ors.<br>
Document editors and shepherd(s) should treat these comments just like they=
<br>
would treat comments from any other IETF contributors and resolve them alon=
g<br>
with any other Last Call comments that have been received. For more details=
 on<br>
the INT Directorate, see <a href=3D"http://www.ietf.org/iesg/directorate.ht=
ml" rel=3D"noreferrer" target=3D"_blank">http://www.ietf.org/iesg/directora=
te.html</a>.<br>
<br>
I hope these comments are clear and useful.<br>
<br>
As requested, from the Internet area Directorate review, these two DMM <br>
documents are being reviewed together: <br>
* draft-ietf-dmm-distributed-mobility-anchoring-14<br>
* draft-ietf-dmm-pmipv6-dlif-05<br>
<br>
This document provides an approach to distributed mobility management<br>
by extending network-based mobility protocols (like Proxy Mobile IPv6). In<=
br>
this solution, mobility sessions are anchored at the last IP hop router. <b=
r>
<br>
This document=E2=80=99s intended status is Experimental. It is well written=
 for such a complex comprehensive document, and technically complete and se=
nsible.<br>
<br>
No major or minor issues.<br>
<br>
Nits:<br>
<br>
Please find some small comments for your consideration:<br>
<br>
<br>
4.1.=C2=A0 Proxy Binding Update<br>
<br>
=C2=A0 =C2=A0A new flag (D) is included in the Proxy Binding Update to indi=
cate<br>
=C2=A0 =C2=A0that the Proxy Binding Update is coming from a Mobility Anchor=
 and<br>
=C2=A0 =C2=A0Access Router and not from a mobile access gateway.=C2=A0 The =
rest of the<br>
=C2=A0 =C2=A0Proxy Binding Update format remains the same as defined in [RF=
C5213].<br>
<br>
=C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A01=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A03<br>
=C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 Sequence #=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
=C2=A0 =C2=A0|A|H|L|K|M|R|P|F|T|B|S|D| Reser |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 Lifetime=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
<br>
However, for RFC 5213 S 8.1:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 |A|H|L|K|M|R|P|=C2=A0 Reserved=C2=A0 =C2=A0 =C2=A0 =C2=
=A0|=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Lifetime=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
<br>
So, therefore, seems like:<br>
1. The definition of Flags F, T, B, and S is missing.<br>
2. =E2=80=9CReser=E2=80=9D is not really clear and =E2=80=9CRsrvd=E2=80=9D =
seems to fit and be more unambiguous.<br></blockquote><div><br></div><div>[=
CB] I&#39;ve replaced &quot;Reser&quot; with &quot;Rsrvd&quot;. The other f=
lags are defined in other RFCs, published after RFC 5213. Do I need to expl=
ain what each of these flags do in this document? In any case, there might =
be additional flags defined in the future, so I think it is not needed.</di=
v><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0p=
x 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
4.2.=C2=A0 Proxy Binding Acknowledgment<br>
<br>
=E2=80=A6<br>
=C2=A0 The rest of the Proxy Binding Acknowledgment format<br>
=C2=A0 =C2=A0remains the same as defined in [RFC5213].<br>
<br>
=C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A01=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A02=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A03<br>
=C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0Status=C2=
=A0 =C2=A0 =C2=A0 |K|R|P|T|B|S|D| |<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
<br>
However, from RFC 5213:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A01=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A02=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A03<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0S=
tatus=C2=A0 =C2=A0 =C2=A0 |K|R|P|Reserved |<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
<br>
And thus, Flags T, B, S are not defined.<br></blockquote><div><br></div><di=
v>[CB] Same as before. Additional flags were defined and added to IANA regi=
stry after RFC 5213 was published. I refer to RFC 5213 as it is where the a=
ctual=C2=A0PBU/PBA format was specified (although they are basically BU/BA =
with P flag set to 1).</div><div><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">
<br>
4.3.=C2=A0 Anchored Prefix Option<br>
<br>
=C2=A0 =C2=A0Anchored Prefix<br>
<br>
=C2=A0 =C2=A0 =C2=A0 A sixteen-byte field containing the mobile node&#39;s =
IPv6 Anchored<br>
=C2=A0 =C2=A0 =C2=A0 Prefix.=C2=A0 Only the first Prefix Length bytes are v=
alid for the<br>
=C2=A0 =C2=A0 =C2=A0 Anchored Prefix.=C2=A0 The rest of the bytes MUST be i=
gnored.<br>
<br>
Not being pedantic, but:<br>
s/byte/octet/g // throughout.<br>
Or=E2=80=A6 &quot;128-bit=E2=80=9D instead of =E2=80=9Csixteen-octet=E2=80=
=9D.<br></blockquote><div><br></div><div>[CB] OK, I see that RFC 6275 uses =
only &quot;octet&quot;, while RFC 5213 uses both &quot;octet&quot; and &quo=
t;byte&quot;. But I agree that using only one is the right thing to do. I&#=
39;ve chosen &quot;octet&quot; as you suggested.</div><div><br></div><block=
quote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1=
px solid rgb(204,204,204);padding-left:1ex">
<br>
<br>
5.=C2=A0 IANA Considerations<br>
<br>
=C2=A0 =C2=A0This document defines six new mobility options that need to be=
<br>
=C2=A0 =C2=A0registered in the Mobility Options registry on the Mobile IPv6=
<br>
=C2=A0 =C2=A0parameters registry.=C2=A0 The required IANA actions are marke=
d as IANA-1<br>
=C2=A0 =C2=A0to IANA-6.<br>
<br>
It would be useful to breakout the specific IANA requests in a table, secti=
ons, or other structure detailing how it should look in the IANA registries=
.<br></blockquote><div><br></div><div>[CB] I&#39;ve added some additional t=
ext, but following the approach of RFC 5213, which keeps it simple. I hope =
this is sufficient.</div><div><br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex">
<br>
6. Security Considerations<br>
<br>
Is there underlying protection against spoofing that can be called out? Thi=
s should be addressed in the Security Dir review, so I will not mention it =
here =F0=9F=99=82<br></blockquote><div><br></div><div>[CB] We assume that u=
sing the mechanisms described for RFC 5213 is enough. We have added some ad=
ditional considerations for the risks/procedures that are specific to the=
=C2=A0distributed solution.</div><div><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">
<br>
8.2.=C2=A0 Informative References<br>
<br>
=C2=A0 =C2=A0[I-D.ietf-dmm-deployment-models]<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Gundavelli, S. and S. Jeon=
, &quot;DMM Deployment Models and<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Architectural Consideratio=
ns&quot;, draft-ietf-dmm-deployment-<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 models-04 (work in progres=
s), May 2018.<br>
<br>
Since there are key definitions from this document, should this be Normativ=
e?<br></blockquote><div><br></div><div>[CB] Since this document is not goin=
g to be progressed any further, we have included the relevant terms in the =
terminology section and remove the reference.</div><div>=C2=A0</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">
<br>
=C2=A0 =C2=A0[RFC7333]=C2=A0 Chan, H., Ed., Liu, D., Seite, P., Yokota, H.,=
 and J.<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Korhonen, &quot;Requiremen=
ts for Distributed Mobility<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Management&quot;, RFC 7333=
, DOI 10.17487/RFC7333, August 2014,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;<a href=3D"https://www=
.rfc-editor.org/info/rfc7333" rel=3D"noreferrer" target=3D"_blank">https://=
www.rfc-editor.org/info/rfc7333</a>&gt;.<br>
<br>
Similarly, should this reference be Normative instead of Informative?<br></=
blockquote><div><br></div><div>[CB] I don&#39;t have a strong opinion here.=
 I&#39;ve moved it to Normative, but I think it could stay as Informative a=
s well.</div><div><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">
<br>
Appendix B.=C2=A0 Implementation experience<br>
<br>
Should this really be an Implementation Status section [RFC7942], as it des=
cribes a point in time rather than learnings?<br>
<br>
Should the Appendices clarify they make no normative specs?<br></blockquote=
><div><br></div><div>[CB] Based also on other comments we have remove both =
appendixes.</div><div><br></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">
<br>
I hope these comments are useful.<br></blockquote><div><br></div><div>[CB] =
Yes, they are indeed. Thanks!</div><div><br></div><div>Carlos</div><div>=C2=
=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
Thank you very much,<br>
<br>
Carlos Pignataro.</blockquote></div></div>

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Reviewer: Jean-Michel Combes
Review result: Ready with Issues

Hi,

Please find my review, as member of the INT Area Directorate, of the following
document:

dprive                                                     S. Bortzmeyer
Internet-Draft                                                     AFNIC
Obsoletes: 7626 (if approved)                               S. Dickinson
Intended status: Informational                                Sinodun IT
Expires: July 19, 2020                                  January 16, 2020

                       DNS Privacy Considerations
                    draft-ietf-dprive-rfc7626-bis-04

<snip>

1.  Introduction

<snip>

   Let us begin with a simplified reminder of how the DNS works (See
   also [RFC8499]).  A client, the stub resolver, issues a DNS query to
   a server, called the recursive resolver (also called caching resolver
   or full resolver or recursive name server).  Let's use the query
   "What are the AAAA records for www.example.com?" as an example.  AAAA
   is the QTYPE (Query Type), and www.example.com is the QNAME (Query
   Name).  (The description that follows assumes a cold cache, for
   instance, because the server just started.)  The recursive resolver
   will first query the root name servers.  In most cases, the root name
   servers will send a referral.  In this example, the referral will be
   to the .com name servers.  The resolver repeats the query to one of
   the .com name servers.  The .com name servers, in turn, will refer to
   the example.com name servers.  The example.com name server will then
   return the answer.  The root name servers, the name servers of .com,
   and the name servers of example.com are called authoritative name
   servers.  It is important, when analyzing the privacy issues, to
   remember that the question asked to all these name servers is always
   the original question, not a derived question.  The question sent to
   the root name servers is "What are the AAAA records for
   www.example.com?", not "What are the name servers of .com?".  By
   repeating the full question, instead of just the relevant part of the
   question to the next in line, the DNS provides more information than
   necessary to the name server.  In this simplified description,
   recursive resolvers do not implement QNAME minimization as described
   in [RFC7816], which will only send the relevant part of the question
   to the upstream name server.

<JMC>
IMHO, that would be clearer to split the previous paragraph into 2 paragraphs:
- one explaining the general DNS process
- one showing the privacy issue related to the fact the question is not derived
BTW, the construction of the end of the previous paragraph suggests that
question derivation and QNAME minimization are two different things. </JMC>

<snip>

   At the time of writing, almost all this DNS traffic is currently sent
   in clear (i.e., unencrypted).  However there is increasing deployment
   of DNS-over-TLS (DoT) [RFC7858] and DNS-over-HTTPS (DoH) [RFC8484],
   particularly in mobile devices, browsers, and by providers of anycast
   recursive DNS resolution services.  There are a few cases where there
   is some alternative channel encryption, for instance, in an IPsec VPN
   tunnel, at least between the stub resolver and the resolver.

<JMC>
IPsec: a reference is missing.
</JMC>

<snip>

   o  Tertiary requests: these are the additional requests performed by
      the DNS system itself.  For instance, if the answer to a query is
      a referral to a set of name servers, and the glue records are not
      returned, the resolver will have to do additional requests to turn
      the name servers' names into IP addresses.  Similarly, even if
      glue records are returned, a careful recursive server will do
      tertiary requests to verify the IP addresses of those records.

<JMC>
“glue records”: IMHO, either a reference or a definition is needed.
</JMC>

<snip>

2.  Scope

   This document focuses mostly on the study of privacy risks for the
   end user (the one performing DNS requests).  We consider the risks of
   pervasive surveillance [RFC7258] as well as risks coming from a more
   focused surveillance.

<JMC>
>From my point of view, but maybe I am wrong, this document is the “Problem
Statement” document regarding DNS Privacy mechanisms. If so, I regret that
there is no text about impact(s), in a security context, when privacy policy
(e.g., DoT, DoH) is deployed. Please, find more comments on such a point inside
Security Considerations section. </JMC>

<snip>

3.2.  Data in the DNS Request

<snip>

   For the communication between the stub resolver and the recursive
   resolver, the source IP address is the address of the user's machine.
   Therefore, all the issues and warnings about collection of IP
   addresses apply here.  For the communication between the recursive
   resolver and the authoritative name servers, the source IP address
   has a different meaning; it does not have the same status as the
   source address in an HTTP connection.  It is typically the IP address
   of the recursive resolver that, in a way, "hides" the real user.
   However, hiding does not always work.  Sometimes EDNS(0) Client
   subnet [RFC7871] is used (see its privacy analysis in
   [denis-edns-client-subnet]).  Sometimes the end user has a personal
   recursive resolver on her machine.  In both cases, the IP address is
   as sensitive as it is for HTTP [sidn-entrada].

   A note about IP addresses: there is currently no IETF document that
   describes in detail all the privacy issues around IP addressing in
   general, although [RFC7721] does discuss privacy considerations for
   IPv6 address generation mechanisms.  In the meantime, the discussion
   here is intended to include both IPv4 and IPv6 source addresses.  For
   a number of reasons, their assignment and utilization characteristics
   are different, which may have implications for details of information
   leakage associated with the collection of source addresses.  (For
   example, a specific IPv6 source address seen on the public Internet
   is less likely than an IPv4 address to originate behind an address
   sharing scheme.)  However, for both IPv4 and IPv6 addresses, it is
   important to note that source addresses are propagated with queries
   and comprise metadata about the host, user, or application that
   originated them.

<JMC>
“It is typically the IP address of the recursive resolver that, in a way,
"hides" the real user.” “... it is important to note that source addresses are
propagated with queries and comprise metadata about the host, user, or
application that originated them.”

IMHO, with such a construction, a reader may be misled (i.e., finally, a
recursive resolver propagates the end-user’s source address). Maybe, the last
paragraph should be at the beginning of the section. </JMC>

<snip>

3.4.  On the Wire

3.4.1.  Unencrypted Transports

<snip>

   o  The recursive resolver can be in the IAP network.  For most
      residential users and potentially other networks, the typical case
      is for the end user's device to be configured (typically
      automatically through DHCP or RA options) with the addresses of
      the DNS proxy in the CPE, which in turns points to the DNS
      recursive resolvers at the IAP.  The attack surface for on-the-
      wire attacks is therefore from the end user system across the
      local network and across the IAP network to the IAP's recursive
      resolvers.

<JMC>
IMHO, it should be: “The best attack surface for on-the wire attacks is
therefore from the end user system to the CPE (i.e., DNS Proxy). From the CPE
to the IAP’s recursive resolvers, the eavesdropping is more complex as the
end-user’s source address may be “hidden”, as explained in Section 3.2”. </JMC>

<snip>

   It is also noted that typically a device connected _only_ to a modern
   cellular network is

   o  directly configured with only the recursive resolvers of the IAP
      and

   o  afforded some level of protection against some types of
      eavesdropping for all traffic (including DNS traffic) due to the
      cellular network link-layer encryption.

<JMC>
Sorry but I don’t agree except if the recursive resolvers are located inside
mobile antennas :) More seriously, AFAIK, even there is L2 encryption on
cellular network, either L2 encryption (e.g., MACSEC) or L3 encryption (e.g.,
IPsec) on fixed networks from RAN to recursive resolvers, this encryption is
not E2E with the recursive resolvers. BTW, the recursive resolvers may be the
same for “Mobile” customers and “Fixed” (e.g., DSL, Fiber) customers. </JMC>

<snip>

4.  Actual "Attacks"

   Many research papers about malware detection use DNS traffic to
   detect "abnormal" behavior that can be traced back to the activity of
   malware on infected machines.  Yes, this research was done for the
   good, but technically it is a privacy attack and it demonstrates the
   power of the observation of DNS traffic.  See [dns-footprint],
   [dagon-malware], and [darkreading-dns].

<JMC>
“... but technically, it is a privacy attack”
Please, add either a definition of what is a “privacy attack” inside the
document or a reference of an existing definition. By the way, I am curious to
check with the definition whether anti-virus software is also considered as a
privacy attacker. </JMC>

<snip>

6.  Security Considerations

   This document is entirely about security, more precisely privacy.  It
   just lays out the problem; it does not try to set requirements (with
   the choices and compromises they imply), much less define solutions.
   Possible solutions to the issues described here are discussed in
   other documents (currently too many to all be mentioned); see, for
   instance, 'Recommendations for DNS Privacy Operators'
   [I-D.ietf-dprive-bcp-op].

<JMC>
As I mentioned inside Section 2, in case this document is considered as a
“Problem Statement” document, IMHO, impact(s) from privacy on security is (are)
missing inside this document. Indeed, there is no text about, at least for me –
but maybe there are other points, the following points: - DNS Tunneling As,
generally, DNS flows are not filtered/blocked, this technique may be used for
malicious activities (e.g., botnet C&C, malware propagation, data extraction
from compromised devices, fraud). One way to mitigate such malicious activities
is the monitoring of DNS flows. The encryption of DNS flows may encourage the
filtering/blocking of encrypted DNS flows (cf. Section 3.5.1.3. topic) - DDoS
attacks based on DNS amplification I am not a DDoS expert, but I am wondering
on potential detection mechanisms, closed to the sources, of DDoS attacks based
on DNS amplification: is there any potential impact to have DoH/DoT deployed?
</JMC>

Thanks in advance for your replies.

Best regards,

JMC.




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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: CARLOS JESUS BERNARDOS CANO <cjbc@it.uc3m.es>
CC: "int-dir@ietf.org" <int-dir@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>, "draft-ietf-dmm-pmipv6-dlif.all@ietf.org" <draft-ietf-dmm-pmipv6-dlif.all@ietf.org>, "dmm@ietf.org" <dmm@ietf.org>
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From: CARLOS JESUS BERNARDOS CANO <cjbc@it.uc3m.es>
Date: Thu, 12 Mar 2020 09:56:09 +0100
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To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: "int-dir@ietf.org" <int-dir@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>,  "draft-ietf-dmm-pmipv6-dlif.all@ietf.org" <draft-ietf-dmm-pmipv6-dlif.all@ietf.org>, "dmm@ietf.org" <dmm@ietf.org>
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Subject: Re: [Int-dir] [Last-Call] Intdir telechat review of draft-ietf-dmm-pmipv6-dlif -05
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Hi Carlos,

Thanks again. Short comment below.

On Thu, Mar 12, 2020 at 6:00 AM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Hi, Carlos,
>
> Thanks for the response! Please see inline, prefaced with CMP.
>
> 2020/03/08 =E5=8D=88=E5=BE=8C0:43=E3=80=81CARLOS JESUS BERNARDOS CANO <cj=
bc@it.uc3m.es>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
> Hi Carlos,
>
> Thanks for your review. Please find inline below my comments.
>
> On Sat, Feb 29, 2020 at 4:15 AM Carlos Pignataro (cpignata) <
> cpignata@cisco.com> wrote:
>
>> Reviewer: Carlos Pignataro
>> Review result: Ready with Nits
>>
>> I am an assigned INT directorate reviewer for this Internet-Draft.  Thes=
e
>> comments were written primarily for the benefit of the Internet Area
>> Directors.
>> Document editors and shepherd(s) should treat these comments just like
>> they
>> would treat comments from any other IETF contributors and resolve them
>> along
>> with any other Last Call comments that have been received. For more
>> details on
>> the INT Directorate, see http://www.ietf.org/iesg/directorate.html.
>>
>> I hope these comments are clear and useful.
>>
>> As requested, from the Internet area Directorate review, these two DMM
>> documents are being reviewed together:
>> * draft-ietf-dmm-distributed-mobility-anchoring-14
>> * draft-ietf-dmm-pmipv6-dlif-05
>>
>> This document defines distributed mobility anchoring, in terms of the
>> different configurations and functions to provide IP mobility support,
>> including network-based or host-based mobility support.
>>
>> The intended status is Informational. It is a very well written and
>> comprehensive
>> document. It is technically sound.
>>
>> No major or minor issues.
>>
>> Nits:
>>
>> A set of small nits for your consideration.
>>
>> 1.  Introduction
>>
>>    As a Mobile Node (MN) attaches to an access router and establishes a
>>    link between them, a /64 IPv6 prefix anchored to the router may be
>>    assigned to the link for exclusive use by the MN [RFC6459].  The MN
>>    may then configure a global IPv6 address from this prefix and use it
>>    as the source IP address in a flow to communicate with its
>>    correspondent node (CN).
>>
>> Capitalize:
>> s/correspondent node/Correspondent Node/
>>
>> 2.  Conventions and Terminology
>>
>>    These include terms such as mobile node (MN), correspondent node
>>    (CN), home agent (HA), home address (HoA), care-of-address (CoA),
>>    local mobility anchor (LMA), and mobile access gateway (MAG).
>>
>> Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCor=
espondent Node=E2=80=9D, etc.
>>
>> Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.
>> Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=
=E2=80=9D)
>>
>> 4.3.  Mobility case, anchor relocation
>>
>>    The IP prefix/address anchoring may move without changing the IP
>>    prefix/address of the flow.  Here the LM and FM functions in Figure 1
>>    in Section 3.1 are implemented as shown in Figure 7.
>>
>> =E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D
>>
>>                          Figure 7: Anchor mobility
>>
>> Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=
=9D instead of =E2=80=98Anchor
>> mobility=E2=80=9D?
>>
>> 5.  Security Considerations
>>
>>    As stated in [RFC7333], "a DMM solution MUST supportany security
>>
>> s/supportany/support any/
>>
>> 8.2. Informative References
>>
>> The relationship of this document and draft-ietf-dmm-deployment-models i=
s
>> mostly clear, thank you for that.
>>
>> I hope you fid these comments useful.
>>
>> Carlos Pignataro.
>>
>>
>> https://tools.ietf.org/html/draft-ietf-dmm-pmipv6-dlif-05
>>
>> I am an assigned INT directorate reviewer for this Internet-Draft.  Thes=
e
>> comments were written primarily for the benefit of the Internet Area
>> Directors.
>> Document editors and shepherd(s) should treat these comments just like
>> they
>> would treat comments from any other IETF contributors and resolve them
>> along
>> with any other Last Call comments that have been received. For more
>> details on
>> the INT Directorate, see http://www.ietf.org/iesg/directorate.html.
>>
>> I hope these comments are clear and useful.
>>
>> As requested, from the Internet area Directorate review, these two DMM
>> documents are being reviewed together:
>> * draft-ietf-dmm-distributed-mobility-anchoring-14
>> * draft-ietf-dmm-pmipv6-dlif-05
>>
>> This document provides an approach to distributed mobility management
>> by extending network-based mobility protocols (like Proxy Mobile IPv6). =
In
>> this solution, mobility sessions are anchored at the last IP hop router.
>>
>> This document=E2=80=99s intended status is Experimental. It is well writ=
ten for
>> such a complex comprehensive document, and technically complete and
>> sensible.
>>
>> No major or minor issues.
>>
>> Nits:
>>
>> Please find some small comments for your consideration:
>>
>>
>> 4.1.  Proxy Binding Update
>>
>>    A new flag (D) is included in the Proxy Binding Update to indicate
>>    that the Proxy Binding Update is coming from a Mobility Anchor and
>>    Access Router and not from a mobile access gateway.  The rest of the
>>    Proxy Binding Update format remains the same as defined in [RFC5213].
>>
>>    0               1               2               3
>>    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
>>                                    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>                                    |            Sequence #         |
>>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>    |A|H|L|K|M|R|P|F|T|B|S|D| Reser |            Lifetime           |
>>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>> However, for RFC 5213 S 8.1:
>>
>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>       |A|H|L|K|M|R|P|  Reserved       |            Lifetime           |
>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>> So, therefore, seems like:
>> 1. The definition of Flags F, T, B, and S is missing.
>> 2. =E2=80=9CReser=E2=80=9D is not really clear and =E2=80=9CRsrvd=E2=80=
=9D seems to fit and be more
>> unambiguous.
>>
>
> [CB] I've replaced "Reser" with "Rsrvd". The other flags are defined in
> other RFCs, published after RFC 5213. Do I need to explain what each of
> these flags do in this document? In any case, there might be additional
> flags defined in the future, so I think it is not needed.
>
>
>
> CMP: The problem I see is that the document currently says:
>    The rest of the
>    Proxy Binding Update format remains the same as defined in [RFC5213]
>
> But based on what you write, that is not the case.
>
> No, you do not need to explain what each flag does =E2=80=94 but I=E2=80=
=99d suggest
> either not say where they are defined, or include the other RFCs.
>
> I checked IANA and found:
>
> https://www.iana.org/assignments/mobility-parameters/mobility-parameters.=
xhtml#mobility-parameters-11
>
> [CB] OK, I was referring to the rest of the PBU format in general. I can
add that a note referring to the IANA registry for the definition and
references of the flags. Would that work?

Thanks,

Carlos


>
>
>> 4.2.  Proxy Binding Acknowledgment
>>
>> =E2=80=A6
>>   The rest of the Proxy Binding Acknowledgment format
>>    remains the same as defined in [RFC5213].
>>
>>    0                   1                   2                   3
>>    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
>>                                    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>                                    |   Status      |K|R|P|T|B|S|D| |
>>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>> However, from RFC 5213:
>>
>>        0                   1                   2                   3
>>        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
>>                                       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>                                       |   Status      |K|R|P|Reserved |
>>       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>
>> And thus, Flags T, B, S are not defined.
>>
>
> [CB] Same as before. Additional flags were defined and added to IANA
> registry after RFC 5213 was published. I refer to RFC 5213 as it is where
> the actual PBU/PBA format was specified (although they are basically BU/B=
A
> with P flag set to 1).
>
>
> THanks, I understand. I was commenting on the text that says =E2=80=9Cthe=
 rest is
> defined in RFC5213=E2=80=9D.
>
>
>> 4.3.  Anchored Prefix Option
>>
>>    Anchored Prefix
>>
>>       A sixteen-byte field containing the mobile node's IPv6 Anchored
>>       Prefix.  Only the first Prefix Length bytes are valid for the
>>       Anchored Prefix.  The rest of the bytes MUST be ignored.
>>
>> Not being pedantic, but:
>> s/byte/octet/g // throughout.
>> Or=E2=80=A6 "128-bit=E2=80=9D instead of =E2=80=9Csixteen-octet=E2=80=9D=
.
>>
>
> [CB] OK, I see that RFC 6275 uses only "octet", while RFC 5213 uses both
> "octet" and "byte". But I agree that using only one is the right thing to
> do. I've chosen "octet" as you suggested.
>
>
> Thanks! As strictly there can be non-octet bytes.
>
>
>>
>> 5.  IANA Considerations
>>
>>    This document defines six new mobility options that need to be
>>    registered in the Mobility Options registry on the Mobile IPv6
>>    parameters registry.  The required IANA actions are marked as IANA-1
>>    to IANA-6.
>>
>> It would be useful to breakout the specific IANA requests in a table,
>> sections, or other structure detailing how it should look in the IANA
>> registries.
>>
>
> [CB] I've added some additional text, but following the approach of RFC
> 5213, which keeps it simple. I hope this is sufficient.
>
>
> Thank you.
>
>
>> 6. Security Considerations
>>
>> Is there underlying protection against spoofing that can be called out?
>> This should be addressed in the Security Dir review, so I will not menti=
on
>> it here =F0=9F=99=82
>>
>
> [CB] We assume that using the mechanisms described for RFC 5213 is enough=
.
> We have added some additional considerations for the risks/procedures tha=
t
> are specific to the distributed solution.
>
>
> Ack.
>
>
>> 8.2.  Informative References
>>
>>    [I-D.ietf-dmm-deployment-models]
>>               Gundavelli, S. and S. Jeon, "DMM Deployment Models and
>>               Architectural Considerations", draft-ietf-dmm-deployment-
>>               models-04 (work in progress), May 2018.
>>
>> Since there are key definitions from this document, should this be
>> Normative?
>>
>
> [CB] Since this document is not going to be progressed any further, we
> have included the relevant terms in the terminology section and remove th=
e
> reference.
>
>
> Got it.
>
>
>
>>
>>    [RFC7333]  Chan, H., Ed., Liu, D., Seite, P., Yokota, H., and J.
>>               Korhonen, "Requirements for Distributed Mobility
>>               Management", RFC 7333, DOI 10.17487/RFC7333, August 2014,
>>               <https://www.rfc-editor.org/info/rfc7333>.
>>
>> Similarly, should this reference be Normative instead of Informative?
>>
>
> [CB] I don't have a strong opinion here. I've moved it to Normative, but =
I
> think it could stay as Informative as well.
>
>
> Your call. Thanks for considering.
>
>
>> Appendix B.  Implementation experience
>>
>> Should this really be an Implementation Status section [RFC7942], as it
>> describes a point in time rather than learnings?
>>
>> Should the Appendices clarify they make no normative specs?
>>
>
> [CB] Based also on other comments we have remove both appendixes.
>
>
> Ack.
>
>
>> I hope these comments are useful.
>>
>
> [CB] Yes, they are indeed. Thanks!
>
>
> :-) Super.
>
> (Another) Carlos.
>
>
> Carlos
>
>
>>
>> Thank you very much,
>>
>> Carlos Pignataro.
>
>
>

--00000000000018bfac05a0a48796
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Hi Carlos,<div><br></div><div>Thanks agai=
n. Short comment below.</div></div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">On Thu, Mar 12, 2020 at 6:00 AM Carlos Pignat=
aro (cpignata) &lt;<a href=3D"mailto:cpignata@cisco.com">cpignata@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 style=3D"overflow-wrap: break-word;">
Hi, Carlos,
<div><br>
</div>
<div>Thanks for the response! Please see inline, prefaced with CMP.<br>
<div><br>
<blockquote type=3D"cite">
<div>2020/03/08 =E5=8D=88=E5=BE=8C0:43=E3=80=81CARLOS JESUS BERNARDOS CANO =
&lt;<a href=3D"mailto:cjbc@it.uc3m.es" target=3D"_blank">cjbc@it.uc3m.es</a=
>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:</div>
<br>
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div dir=3D"ltr">Hi Carlos,
<div><br>
</div>
<div>Thanks for your review. Please find inline below my comments.</div>
</div>
<br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Sat, Feb 29, 2020 at 4:15 AM Carlo=
s Pignataro (cpignata) &lt;<a href=3D"mailto:cpignata@cisco.com" target=3D"=
_blank">cpignata@cisco.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" class=3D"gmail_quote">
Reviewer: Carlos Pignataro<br>
Review result: Ready with Nits<br>
<br>
I am an assigned INT directorate reviewer for this Internet-Draft.=C2=A0 Th=
ese<br>
comments were written primarily for the benefit of the Internet Area Direct=
ors.<br>
Document editors and shepherd(s) should treat these comments just like they=
<br>
would treat comments from any other IETF contributors and resolve them alon=
g<br>
with any other Last Call comments that have been received. For more details=
 on<br>
the INT Directorate, see<span>=C2=A0</span><a href=3D"http://www.ietf.org/i=
esg/directorate.html" rel=3D"noreferrer" target=3D"_blank">http://www.ietf.=
org/iesg/directorate.html</a>.<br>
<br>
I hope these comments are clear and useful.<br>
<br>
As requested, from the Internet area Directorate review, these two DMM<span=
>=C2=A0</span><br>
documents are being reviewed together:<span>=C2=A0</span><br>
* draft-ietf-dmm-distributed-mobility-anchoring-14<br>
* draft-ietf-dmm-pmipv6-dlif-05<br>
<br>
This document defines distributed mobility anchoring, in terms of the<span>=
=C2=A0</span><br>
different configurations and functions to provide IP mobility support,<span=
>=C2=A0</span><br>
including network-based or host-based mobility support.<br>
<br>
The intended status is Informational. It is a very well written and compreh=
ensive<br>
document. It is technically sound.<br>
<br>
No major or minor issues.<br>
<br>
Nits:<br>
<br>
A set of small nits for your consideration.<br>
<br>
1.=C2=A0 Introduction<br>
<br>
=C2=A0 =C2=A0As a Mobile Node (MN) attaches to an access router and establi=
shes a<br>
=C2=A0 =C2=A0link between them, a /64 IPv6 prefix anchored to the router ma=
y be<br>
=C2=A0 =C2=A0assigned to the link for exclusive use by the MN [RFC6459].=C2=
=A0 The MN<br>
=C2=A0 =C2=A0may then configure a global IPv6 address from this prefix and =
use it<br>
=C2=A0 =C2=A0as the source IP address in a flow to communicate with its<br>
=C2=A0 =C2=A0correspondent node (CN).<br>
<br>
Capitalize:<br>
s/correspondent node/Correspondent Node/<br>
<br>
2.=C2=A0 Conventions and Terminology<br>
<br>
=C2=A0 =C2=A0These include terms such as mobile node (MN), correspondent no=
de<br>
=C2=A0 =C2=A0(CN), home agent (HA), home address (HoA), care-of-address (Co=
A),<br>
=C2=A0 =C2=A0local mobility anchor (LMA), and mobile access gateway (MAG).<=
br>
<br>
Capitalize =E2=80=9CMobile Node=E2=80=9D (as per =C2=A7 1), =E2=80=9CCoresp=
ondent Node=E2=80=9D, etc.<br>
<br>
Similar within this same =C2=A7 2, =E2=80=9Cmobile router=E2=80=9D, etc.<br=
>
Same throughout the document (e.g., =E2=80=9Crouter advertisement (RA)=E2=
=80=9D)<br>
<br>
4.3.=C2=A0 Mobility case, anchor relocation<br>
<br>
=C2=A0 =C2=A0The IP prefix/address anchoring may move without changing the =
IP<br>
=C2=A0 =C2=A0prefix/address of the flow.=C2=A0 Here the LM and FM functions=
 in Figure 1<br>
=C2=A0 =C2=A0in Section 3.1 are implemented as shown in Figure 7.<br>
<br>
=E2=80=9CFigure 1 in Section 3.1.1 are implemented=E2=80=9D<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0Figure 7: Anchor mobility<br>
<br>
Should this figure=E2=80=99s label be =E2=80=9CAnchor Relocation=E2=80=9D i=
nstead of =E2=80=98Anchor mobility=E2=80=9D?<br>
<br>
5.=C2=A0 Security Considerations<br>
<br>
=C2=A0 =C2=A0As stated in [RFC7333], &quot;a DMM solution MUST supportany s=
ecurity<br>
<br>
s/supportany/support any/<br>
<br>
8.2. Informative References<br>
<br>
The relationship of this document and draft-ietf-dmm-deployment-models is m=
ostly clear, thank you for that.<br>
<br>
I hope you fid these comments useful.<br>
<br>
Carlos Pignataro.<br>
<br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-dmm-pmipv6-dlif-05" rel=
=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-ietf-dm=
m-pmipv6-dlif-05</a><br>
<br>
I am an assigned INT directorate reviewer for this Internet-Draft.=C2=A0 Th=
ese<br>
comments were written primarily for the benefit of the Internet Area Direct=
ors.<br>
Document editors and shepherd(s) should treat these comments just like they=
<br>
would treat comments from any other IETF contributors and resolve them alon=
g<br>
with any other Last Call comments that have been received. For more details=
 on<br>
the INT Directorate, see<span>=C2=A0</span><a href=3D"http://www.ietf.org/i=
esg/directorate.html" rel=3D"noreferrer" target=3D"_blank">http://www.ietf.=
org/iesg/directorate.html</a>.<br>
<br>
I hope these comments are clear and useful.<br>
<br>
As requested, from the Internet area Directorate review, these two DMM<span=
>=C2=A0</span><br>
documents are being reviewed together:<span>=C2=A0</span><br>
* draft-ietf-dmm-distributed-mobility-anchoring-14<br>
* draft-ietf-dmm-pmipv6-dlif-05<br>
<br>
This document provides an approach to distributed mobility management<br>
by extending network-based mobility protocols (like Proxy Mobile IPv6). In<=
br>
this solution, mobility sessions are anchored at the last IP hop router.<sp=
an>=C2=A0</span><br>
<br>
This document=E2=80=99s intended status is Experimental. It is well written=
 for such a complex comprehensive document, and technically complete and se=
nsible.<br>
<br>
No major or minor issues.<br>
<br>
Nits:<br>
<br>
Please find some small comments for your consideration:<br>
<br>
<br>
4.1.=C2=A0 Proxy Binding Update<br>
<br>
=C2=A0 =C2=A0A new flag (D) is included in the Proxy Binding Update to indi=
cate<br>
=C2=A0 =C2=A0that the Proxy Binding Update is coming from a Mobility Anchor=
 and<br>
=C2=A0 =C2=A0Access Router and not from a mobile access gateway.=C2=A0 The =
rest of the<br>
=C2=A0 =C2=A0Proxy Binding Update format remains the same as defined in [RF=
C5213].<br>
<br>
=C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A01=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A03<br>
=C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 Sequence #=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
=C2=A0 =C2=A0|A|H|L|K|M|R|P|F|T|B|S|D| Reser |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 Lifetime=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
<br>
However, for RFC 5213 S 8.1:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 |A|H|L|K|M|R|P|=C2=A0 Reserved=C2=A0 =C2=A0 =C2=A0 =C2=
=A0|=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Lifetime=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0|<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
<br>
So, therefore, seems like:<br>
1. The definition of Flags F, T, B, and S is missing.<br>
2. =E2=80=9CReser=E2=80=9D is not really clear and =E2=80=9CRsrvd=E2=80=9D =
seems to fit and be more unambiguous.<br>
</blockquote>
<div><br>
</div>
<div>[CB] I&#39;ve replaced &quot;Reser&quot; with &quot;Rsrvd&quot;. The o=
ther flags are defined in other RFCs, published after RFC 5213. Do I need t=
o explain what each of these flags do in this document? In any case, there =
might be additional flags defined in the future,
 so I think it is not needed.</div>
<div>=C2=A0</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>CMP: The problem I see is that the document currently says:</div>
<div>=C2=A0 =C2=A0The rest of the<br>
=C2=A0 =C2=A0Proxy Binding Update format remains the same as defined in [RF=
C5213]</div>
<div><br>
</div>
<div>But based on what you write, that is not the case.</div>
<div><br>
</div>
<div>No, you do not need to explain what each flag does =E2=80=94 but I=E2=
=80=99d suggest either not say where they are defined, or include the other=
 RFCs.</div>
<div><br>
</div>
<div>I checked IANA and found:</div>
<div><a href=3D"https://www.iana.org/assignments/mobility-parameters/mobili=
ty-parameters.xhtml#mobility-parameters-11" target=3D"_blank">https://www.i=
ana.org/assignments/mobility-parameters/mobility-parameters.xhtml#mobility-=
parameters-11</a></div>
<div><br></div></div></div></div></blockquote><div>[CB] OK, I was referring=
 to the rest of the PBU format in general. I can add that a note referring =
to the IANA registry for the definition and references of the flags. Would =
that work?</div><div><br></div><div>Thanks,</div><div><br></div><div>Carlos=
</div><div>=C2=A0</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"><d=
iv style=3D"overflow-wrap: break-word;"><div><div><div>
</div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
4.2.=C2=A0 Proxy Binding Acknowledgment<br>
<br>
=E2=80=A6<br>
=C2=A0 The rest of the Proxy Binding Acknowledgment format<br>
=C2=A0 =C2=A0remains the same as defined in [RFC5213].<br>
<br>
=C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A01=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A02=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A03<br>
=C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0Status=C2=
=A0 =C2=A0 =C2=A0 |K|R|P|T|B|S|D| |<br>
=C2=A0 =C2=A0+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+<br>
<br>
However, from RFC 5213:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A01=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A02=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A03<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A00 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<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0S=
tatus=C2=A0 =C2=A0 =C2=A0 |K|R|P|Reserved |<br>
=C2=A0 =C2=A0 =C2=A0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+<br>
<br>
And thus, Flags T, B, S are not defined.<br>
</blockquote>
<div><br>
</div>
<div>[CB] Same as before. Additional flags were defined and added to IANA r=
egistry after RFC 5213 was published. I refer to RFC 5213 as it is where th=
e actual=C2=A0PBU/PBA format was specified (although they are basically BU/=
BA with P flag set to 1).</div>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>THanks, I understand. I was commenting on the text that says =E2=80=9C=
the rest is defined in RFC5213=E2=80=9D.</div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
4.3.=C2=A0 Anchored Prefix Option<br>
<br>
=C2=A0 =C2=A0Anchored Prefix<br>
<br>
=C2=A0 =C2=A0 =C2=A0 A sixteen-byte field containing the mobile node&#39;s =
IPv6 Anchored<br>
=C2=A0 =C2=A0 =C2=A0 Prefix.=C2=A0 Only the first Prefix Length bytes are v=
alid for the<br>
=C2=A0 =C2=A0 =C2=A0 Anchored Prefix.=C2=A0 The rest of the bytes MUST be i=
gnored.<br>
<br>
Not being pedantic, but:<br>
s/byte/octet/g // throughout.<br>
Or=E2=80=A6 &quot;128-bit=E2=80=9D instead of =E2=80=9Csixteen-octet=E2=80=
=9D.<br>
</blockquote>
<div><br>
</div>
<div>[CB] OK, I see that RFC 6275 uses only &quot;octet&quot;, while RFC 52=
13 uses both &quot;octet&quot; and &quot;byte&quot;. But I agree that using=
 only one is the right thing to do. I&#39;ve chosen &quot;octet&quot; as yo=
u suggested.</div>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>Thanks! As strictly there can be non-octet bytes.</div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
<br>
5.=C2=A0 IANA Considerations<br>
<br>
=C2=A0 =C2=A0This document defines six new mobility options that need to be=
<br>
=C2=A0 =C2=A0registered in the Mobility Options registry on the Mobile IPv6=
<br>
=C2=A0 =C2=A0parameters registry.=C2=A0 The required IANA actions are marke=
d as IANA-1<br>
=C2=A0 =C2=A0to IANA-6.<br>
<br>
It would be useful to breakout the specific IANA requests in a table, secti=
ons, or other structure detailing how it should look in the IANA registries=
.<br>
</blockquote>
<div><br>
</div>
<div>[CB] I&#39;ve added some additional text, but following the approach o=
f RFC 5213, which keeps it simple. I hope this is sufficient.</div>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
Thank you.</div>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
6. Security Considerations<br>
<br>
Is there underlying protection against spoofing that can be called out? Thi=
s should be addressed in the Security Dir review, so I will not mention it =
here =F0=9F=99=82<br>
</blockquote>
<div><br>
</div>
<div>[CB] We assume that using the mechanisms described for RFC 5213 is eno=
ugh. We have added some additional considerations for the risks/procedures =
that are specific to the=C2=A0distributed solution.</div>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
Ack.</div>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
8.2.=C2=A0 Informative References<br>
<br>
=C2=A0 =C2=A0[I-D.ietf-dmm-deployment-models]<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Gundavelli, S. and S. Jeon=
, &quot;DMM Deployment Models and<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Architectural Consideratio=
ns&quot;, draft-ietf-dmm-deployment-<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 models-04 (work in progres=
s), May 2018.<br>
<br>
Since there are key definitions from this document, should this be Normativ=
e?<br>
</blockquote>
<div><br>
</div>
<div>[CB] Since this document is not going to be progressed any further, we=
 have included the relevant terms in the terminology section and remove the=
 reference.</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
Got it.</div>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<div>=C2=A0</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
=C2=A0 =C2=A0[RFC7333]=C2=A0 Chan, H., Ed., Liu, D., Seite, P., Yokota, H.,=
 and J.<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Korhonen, &quot;Requiremen=
ts for Distributed Mobility<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Management&quot;, RFC 7333=
, DOI 10.17487/RFC7333, August 2014,<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;<a href=3D"https://www=
.rfc-editor.org/info/rfc7333" rel=3D"noreferrer" target=3D"_blank">https://=
www.rfc-editor.org/info/rfc7333</a>&gt;.<br>
<br>
Similarly, should this reference be Normative instead of Informative?<br>
</blockquote>
<div><br>
</div>
<div>[CB] I don&#39;t have a strong opinion here. I&#39;ve moved it to Norm=
ative, but I think it could stay as Informative as well.</div>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>Your call. Thanks for considering.</div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
Appendix B.=C2=A0 Implementation experience<br>
<br>
Should this really be an Implementation Status section [RFC7942], as it des=
cribes a point in time rather than learnings?<br>
<br>
Should the Appendices clarify they make no normative specs?<br>
</blockquote>
<div><br>
</div>
<div>[CB] Based also on other comments we have remove both appendixes.</div=
>
<div><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>Ack.</div>
<div><br>
</div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
I hope these comments are useful.<br>
</blockquote>
<div><br>
</div>
<div>[CB] Yes, they are indeed. Thanks!</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
:-) Super.</div>
<div><br>
</div>
<div>(Another) Carlos.</div>
<div><br>
</div>
<div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr" style=3D"font-family:Helvetica;font-size:12px;font-style:n=
ormal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;tex=
t-align:start;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none">
<div class=3D"gmail_quote">
<div><br>
</div>
<div>Carlos</div>
<div>=C2=A0</div>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex" class=3D"gmail_quote">
<br>
Thank you very much,<br>
<br>
Carlos Pignataro.</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>

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

--00000000000018bfac05a0a48796--


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Thread-Topic: [Last-Call] Intdir telechat review of draft-ietf-dmm-pmipv6-dlif -05 
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Subject: Re: [Int-dir] [Last-Call] Intdir telechat review of draft-ietf-dmm-pmipv6-dlif -05
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From nobody Tue Mar 17 12:22:06 2020
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From: Carlos Bernardos via Datatracker <noreply@ietf.org>
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Subject: [Int-dir] Intdir telechat review of draft-ietf-regext-data-escrow-05
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Reviewer: Carlos Bernardos
Review result: Ready with Nits

Reviewer: Carlos J. Bernardos
Review result: Ready with nits

I am an assigned INT directorate reviewer for draft-ietf-regext-data-escrow 
These comments were written primarily for the benefit of the Internet Area
Directors. Document editors and shepherd(s) should treat these comments just
like they would treat comments from any other IETF contributors and resolve
them along with any other Last Call comments that have been received. For more
details on the INT Directorate, see http://www.ietf.org/iesg/directorate.html.

I hope these comments are clear and useful.

>From an INT directorate point of view the document is ready, as it does not
deal with the mechanisms used to actually transfer the data escrow deposits. I
have some comments regarding the security and privacy sections. - In section 10
(Security considerations):

"Depending on local policies, some elements or, most likely, the whole deposit
will be considered confidential. As such, the registry transmitting the data to
the escrow agent should take all the necessary precautions such as encrypting
the data itself and/or the transport channel to avoid inadvertent disclosure of
private data."

I'd assume the should in "escrow agent should take" should be UPPER case, right?

"Authentication of the parties passing data escrow deposit files is also of the
utmost importance. The escrow agent SHOULD properly authenticate the identity
of the registry before accepting data escrow deposits. In a similar manner, the
registry SHOULD authenticate the identity of the escrow agent before submitting
any data.

Additionally, the registry and the escrow agent SHOULD use integrity checking
mechanisms to ensure the data transmitted is what the source intended.
Validation of the contents by the escrow agent is RECOMMENDED to ensure not
only that the file was transmitted correctly from the registry, but also that
the contents are "meaningful"."

In general, I wonder why not all the SHOULDs in this section are not MUST. But
this should be probably better assessed by the SECDIR.

- In section 11 (Privacy considerations):

"This specification defines a format that may be used to escrow personal data.
The process of data escrow is governed by a legal document agreed by the
parties, and such legal document must regulate the particularities regarding
the protection of personal data."

I'd assume the must should be in UPPER case, no?

Thanks,

Carlos



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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
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Subject: [Int-dir] Intdir telechat review of draft-ietf-dnsop-no-response-issue-17
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Reviewer: Carlos Pignataro
Review result: Ready with Nits

I am an assigned INT directorate reviewer for this Internet-Draft.  These
comments were written primarily for the benefit of the Internet Area Directors.
Document editors and shepherd(s) should treat these comments just like they
would treat comments from any other IETF contributors and resolve them along
with any other Last Call comments that have been received. For more details on
the INT Directorate, see http://www.ietf.org/iesg/directorate.html.

I hope these comments are clear and useful.

Document: draft-ietf-dnsop-no-response-issue
Reviewer: Carlos Pignataro
Intended Status: BCP

This is a very comprehensive and well written document, for which I have no
concerns from an Internet Directorate perspective.

This document is effectively Ready, modulo a couple of Nits for the author's
consideration:

 A Common Operational Problem in DNS Servers - Failure To Communicate.

Is there an extraneous "." at the end of the title?

   o  administrative or technical contacts listed in the registration
      information for the parent domain of the name of the misbehaving
      server, or for zones   for which the name server is authoritative

Spacing at "zones   for" -> "zones for"

Thanks,

Carlos Pignataro.



