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Subject: [dnssd] IETF 99 DNSSD WG Minutes
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Hi everyone,

Thanks to Tim Wicinski for taking minutes!

Below are the draft minutes of DNSSD for IETF 99.
Please take a quick look and let us know via email if you see any =
issues,
or feel free to modify the etherpad directly:
=
https://etherpad.tools.ietf.org/p/notes-ietf-99-dnssd?useMonospaceFont=3Dt=
rue =
<https://etherpad.tools.ietf.org/p/notes-ietf-99-dnssd?useMonospaceFont=3D=
true>

We will be submitting these minutes to the IETF data tracker at the end =
of the week.

Thanks,
David Schinazi


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DNSSD WG

IETF99, Prague
Wednesday 19th July 2017
Athens/Barcelina room 15:20 - 16:50 local time

Chairs=E2=80=99 Introduction                                             =
           Chairs, 5 mins

Status:=20

The dnssd-hybrid draft (now "Discovery Proxy") will be submitted to the =
IESG soon.
The withdrawn IPR statement on the draft needs to be clarified.
The .home reference needs to be updated to .home.arpa.

Ralph Droms is stepping down as co-chair. Looking for a co-chair.=20
The WG thanked Ralph for his excellent contributions to the WG as =
co-chair.

DNS-SD Privacy drafts                                                =
Christian Huitema, 20 mins
https://tools.ietf.org/html/draft-ietf-dnssd-privacy-02

We had detailed WGLC reviews by
- Stephane
- Ted

Issue; Use of PSK

Carsten Boreman (CB): Need secret handshake
Part of same category

Ted Lemon (TL):  Concerned about not load on server but caching behavior =
of dnssd client.=20
    move from 5 minutes to 30 minutes
Unicast - 5 minutes is fine
multicast - want longer

Aanchal Malhotra (AM):  counter or abs time, counter would be better
CH: can not implement=20
Threat Model?=20
AM:  5 minutes
AM: Clock drift? accepts both in a small interval

CH: Counter=20

DT: pulling out into privacy or implementation considerations

SC: Did not understand the comments from AM - did a lot of work in NTP



https://tools.ietf.org/html/draft-ietf-dnssd-pairing-02

split into two drafts
- information analysis
- std track protocol

Privacy Draft passed WGLC, rady
Pairing Draft passed WGLC but
 - split analysis spec and QR code
 - need second WGLC for pairing
=20
TL: did not read sections 2/3, easy to i

Kerry Lynn (KL): dynamic QR codes for network code.=20

Daniel Kaiser: Likes to split drafts

Split into Two documents:
    10 for - 1 against.  Will check on list.=20

QR in separate draft?

DT: three ways
- leave as is
- split into separate documents
- separate chapter

7-1-1 for a separate chapter
   =20
  =20
   =20
DNS-SD Update and New Work Items                                Stuart =
Cheshire, 30 mins
https://tools.ietf.org/html/draft-cheshire-dnssd-roadmap-00

why non-multicast?

all waiting on session-signaling

roadmap

client-config

https://tools.ietf.org/html/draft-sctl-service-registration-00

basically dns update=20

David S (DS): fcfs security and naming
SC: Some manual removal of d

MA: make simple to user
SC: key get erased. concern noted

DT: how to scale to enterprise/campus. If you haven't heard in some =
time, unicast to orignal address asking.
otherwise garbage collection

Juliusz Chroboczek (JC):  Can not be implemented if i do not have write =
able persistent storage
SC: Reg Srvr remember key until reboot. then FCFS
   =20
RD: should be documented in draft

David Schinazi(DS): what do you do with the "David's Macbook1" ?

KL: Persistent identifier that might expose info.=20

https://tools.ietf.org/html/draft-sctl-discovery-broker-00

TP: diff between discovery proxy vs discovery broker. =20
proxy is 1:1 unicast to multicast=20
broker is !:Many unicast to unicast

https://tools.ietf.org/html/draft-cheshire-edns0-owner-option-01

DNS-SD Advertising Proxy and Zone Stitching drafts become unnecessary as =
we move away from Multicast DNS                                        =20=


Toke described his ddns registration implementation

Multicast DNS Discovery Proxy                                        Ted =
Lemon, 15 mins=20
https://tools.ietf.org/html/draft-sctl-dnssd-mdns-relay-00

TL:=20
  =20
  =20
   =20
DNS-SD / CoRE RD interoperability discussion                        =
Kerry Lynn, 15 mins
https://tools.ietf.org/html/draft-ietf-core-rd-dns-sd-00

Resource Discovery and Service Discovery interop
              =20
RD and SD are complementary; RD typically finer-grained
RD work goes back about 6 years.
CoRE WG originally intended to work with dnssd, but decided to go in its =
own direction.
Main output of CoRE is the CoAP protocol
Multicast RESTful applications are possible.
Send query, get back set of links that match the query.
if =3D interface specification
rt =3D resource type
This is what we'd probably want to export to the SD world, from the RD; =
so that's what the draft discusses

SC: in that example, the rt, is that registered in iana service type =
registry?

CB: two registries, entries under if=3D and rt=3D =20

DT: potential problem is rt values could have dots in them.=20
SC: could in principle escape them; iana service type registry says =
letters, digits, hyphens.=20

DT: procedural issue with kerry's example - how safe is it to assume =
that left most label is special
K: mapping agent could handle, or have a convention.

SC: Service is entity, has a protocol. Carsten talks about a Resource, =
it's entity you talk to, it has a protocol. Sounds same! So would help =
to figure out why resource is not a service.

CB: Answer is reason we have the means to identify Resources that are =
worth it=20
                                                       =20
Summary of actions and close                                        =
Chairs, 5 mins

The chairs stated that with only a few people having read the new drafts =
by Stuart and Ted it was too early to consider WG adoption.

1) draft-ietf-dnssd-privacy-02 will be revved from WG feedback to -03 =
and sent to IESG; a document shepherd is needed

2) Confirm the actions on splitting draft-ietf-dnssd-pairing-02 on the =
list, and submit updated draft(s) to include WG feedback

3) Progress discussion of Stuart and Ted's new drafts on the mail list.

4) The dnssd WG chairs will discuss a way forward for the DNS Session =
Signalling draft with the dnsop WG chairs

5) Our AD will solicit expressions of interest for a new co-chair.

Ralph thanked everyone.

Meeting closed at 16:57.

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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"">Hi everyone,<div class=3D""><br class=3D""></div><div =
class=3D"">Thanks to&nbsp;Tim Wicinski for taking minutes!</div><div =
class=3D""><br class=3D""></div><div class=3D"">Below are the draft =
minutes of DNSSD for IETF 99.</div><div class=3D"">Please take a quick =
look and let us know via email if you see any issues,</div><div =
class=3D"">or feel free to modify the etherpad directly:</div><div =
class=3D""><a =
href=3D"https://etherpad.tools.ietf.org/p/notes-ietf-99-dnssd?useMonospace=
Font=3Dtrue" =
class=3D"">https://etherpad.tools.ietf.org/p/notes-ietf-99-dnssd?useMonosp=
aceFont=3Dtrue</a></div><div class=3D""><br class=3D""></div><div =
class=3D"">We will be submitting these minutes to the IETF data tracker =
at the end of the week.</div><div class=3D""><br class=3D""></div><div =
class=3D"">Thanks,</div><div class=3D"">David Schinazi</div><div =
class=3D""><br class=3D""></div><div class=3D""><br class=3D""></div><div =
class=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=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=
=3D=3D=3D=3D=3D=3D</div><div class=3D""><br class=3D""></div><div =
class=3D""><div class=3D"">DNSSD WG</div><div class=3D""><br =
class=3D""></div><div class=3D"">IETF99, Prague</div><div =
class=3D"">Wednesday 19th July 2017</div><div class=3D"">Athens/Barcelina =
room 15:20 - 16:50 local time</div><div class=3D""><br =
class=3D""></div><div class=3D"">Chairs=E2=80=99 Introduction &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Chairs, 5 mins</div><div =
class=3D""><br class=3D""></div><div class=3D"">Status:&nbsp;</div><div =
class=3D""><br class=3D""></div><div class=3D"">The dnssd-hybrid draft =
(now "Discovery Proxy") will be submitted to the IESG soon.</div><div =
class=3D"">The withdrawn IPR statement on the draft needs to be =
clarified.</div><div class=3D"">The .home reference needs to be updated =
to .home.arpa.</div><div class=3D""><br class=3D""></div><div =
class=3D"">Ralph Droms is stepping down as co-chair. Looking for a =
co-chair.&nbsp;</div><div class=3D"">The WG thanked Ralph for his =
excellent contributions to the WG as co-chair.</div><div class=3D""><br =
class=3D""></div><div class=3D"">DNS-SD Privacy drafts &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp;Christian Huitema, 20 mins</div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-ietf-dnssd-privacy-02" =
class=3D"">https://tools.ietf.org/html/draft-ietf-dnssd-privacy-02</a></di=
v><div class=3D""><br class=3D""></div><div class=3D"">We had detailed =
WGLC reviews by</div><div class=3D"">- Stephane</div><div class=3D"">- =
Ted</div><div class=3D""><br class=3D""></div><div class=3D"">Issue; Use =
of PSK</div><div class=3D""><br class=3D""></div><div class=3D"">Carsten =
Boreman (CB): Need secret handshake</div><div class=3D"">Part of same =
category</div><div class=3D""><br class=3D""></div><div class=3D"">Ted =
Lemon (TL): &nbsp;Concerned about not load on server but caching =
behavior of dnssd client.&nbsp;</div><div class=3D"">&nbsp; &nbsp; move =
from 5 minutes to 30 minutes</div><div class=3D"">Unicast - 5 minutes is =
fine</div><div class=3D"">multicast - want longer</div><div class=3D""><br=
 class=3D""></div><div class=3D"">Aanchal Malhotra (AM): &nbsp;counter =
or abs time, counter would be better</div><div class=3D"">CH: can not =
implement&nbsp;</div><div class=3D"">Threat Model?&nbsp;</div><div =
class=3D"">AM: &nbsp;5 minutes</div><div class=3D"">AM: Clock drift? =
accepts both in a small interval</div><div class=3D""><br =
class=3D""></div><div class=3D"">CH: Counter&nbsp;</div><div =
class=3D""><br class=3D""></div><div class=3D"">DT: pulling out into =
privacy or implementation considerations</div><div class=3D""><br =
class=3D""></div><div class=3D"">SC: Did not understand the comments =
from AM - did a lot of work in NTP</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div><div class=3D""><br =
class=3D""></div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-ietf-dnssd-pairing-02" =
class=3D"">https://tools.ietf.org/html/draft-ietf-dnssd-pairing-02</a></di=
v><div class=3D""><br class=3D""></div><div class=3D"">split into two =
drafts</div><div class=3D"">- information analysis</div><div class=3D"">- =
std track protocol</div><div class=3D""><br class=3D""></div><div =
class=3D"">Privacy Draft passed WGLC, rady</div><div class=3D"">Pairing =
Draft passed WGLC but</div><div class=3D"">&nbsp;- split analysis spec =
and QR code</div><div class=3D"">&nbsp;- need second WGLC for =
pairing</div><div class=3D"">&nbsp;</div><div class=3D"">TL: did not =
read sections 2/3, easy to i</div><div class=3D""><br =
class=3D""></div><div class=3D"">Kerry Lynn (KL): dynamic QR codes for =
network code.&nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">Daniel Kaiser: Likes to split drafts</div><div class=3D""><br =
class=3D""></div><div class=3D"">Split into Two documents:</div><div =
class=3D"">&nbsp; &nbsp; 10 for - 1 against. &nbsp;Will check on =
list.&nbsp;</div><div class=3D""><br class=3D""></div><div class=3D"">QR =
in separate draft?</div><div class=3D""><br class=3D""></div><div =
class=3D"">DT: three ways</div><div class=3D"">- leave as is</div><div =
class=3D"">- split into separate documents</div><div class=3D"">- =
separate chapter</div><div class=3D""><br class=3D""></div><div =
class=3D"">7-1-1 for a separate chapter</div><div class=3D"">&nbsp; =
&nbsp;&nbsp;</div><div class=3D"">&nbsp; &nbsp;</div><div =
class=3D"">&nbsp; &nbsp;&nbsp;</div><div class=3D"">DNS-SD Update and =
New Work Items &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Stuart Cheshire, =
30 mins</div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-cheshire-dnssd-roadmap-00" =
class=3D"">https://tools.ietf.org/html/draft-cheshire-dnssd-roadmap-00</a>=
</div><div class=3D""><br class=3D""></div><div class=3D"">why =
non-multicast?</div><div class=3D""><br class=3D""></div><div =
class=3D"">all waiting on session-signaling</div><div class=3D""><br =
class=3D""></div><div class=3D"">roadmap</div><div class=3D""><br =
class=3D""></div><div class=3D"">client-config</div><div class=3D""><br =
class=3D""></div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-sctl-service-registration-00" =
class=3D"">https://tools.ietf.org/html/draft-sctl-service-registration-00<=
/a></div><div class=3D""><br class=3D""></div><div class=3D"">basically =
dns update&nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">David S (DS): fcfs security and naming</div><div class=3D"">SC:=
 Some manual removal of d</div><div class=3D""><br class=3D""></div><div =
class=3D"">MA: make simple to user</div><div class=3D"">SC: key get =
erased. concern noted</div><div class=3D""><br class=3D""></div><div =
class=3D"">DT: how to scale to enterprise/campus. If you haven't heard =
in some time, unicast to orignal address asking.</div><div =
class=3D"">otherwise garbage collection</div><div class=3D""><br =
class=3D""></div><div class=3D"">Juliusz Chroboczek (JC): &nbsp;Can not =
be implemented if i do not have write able persistent storage</div><div =
class=3D"">SC: Reg Srvr remember key until reboot. then FCFS</div><div =
class=3D"">&nbsp; &nbsp;&nbsp;</div><div class=3D"">RD: should be =
documented in draft</div><div class=3D""><br class=3D""></div><div =
class=3D"">David Schinazi(DS): what do you do with the "David's =
Macbook1" ?</div><div class=3D""><br class=3D""></div><div class=3D"">KL: =
Persistent identifier that might expose info.&nbsp;</div><div =
class=3D""><br class=3D""></div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-sctl-discovery-broker-00" =
class=3D"">https://tools.ietf.org/html/draft-sctl-discovery-broker-00</a><=
/div><div class=3D""><br class=3D""></div><div class=3D"">TP: diff =
between discovery proxy vs discovery broker. &nbsp;</div><div =
class=3D"">proxy is 1:1 unicast to multicast&nbsp;</div><div =
class=3D"">broker is !:Many unicast to unicast</div><div class=3D""><br =
class=3D""></div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-cheshire-edns0-owner-option-01" =
class=3D"">https://tools.ietf.org/html/draft-cheshire-edns0-owner-option-0=
1</a></div><div class=3D""><br class=3D""></div><div class=3D"">DNS-SD =
Advertising Proxy and Zone Stitching drafts become unnecessary as we =
move away from Multicast DNS &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</div><div class=3D""><br =
class=3D""></div><div class=3D"">Toke described his ddns registration =
implementation</div><div class=3D""><br class=3D""></div><div =
class=3D"">Multicast DNS Discovery Proxy &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Ted Lemon, 15 =
mins&nbsp;</div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-sctl-dnssd-mdns-relay-00" =
class=3D"">https://tools.ietf.org/html/draft-sctl-dnssd-mdns-relay-00</a><=
/div><div class=3D""><br class=3D""></div><div =
class=3D"">TL:&nbsp;</div><div class=3D"">&nbsp; &nbsp;</div><div =
class=3D"">&nbsp; &nbsp;</div><div class=3D"">&nbsp; =
&nbsp;&nbsp;</div><div class=3D"">DNS-SD / CoRE RD interoperability =
discussion &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp;Kerry Lynn, 15 mins</div><div class=3D""><a =
href=3D"https://tools.ietf.org/html/draft-ietf-core-rd-dns-sd-00" =
class=3D"">https://tools.ietf.org/html/draft-ietf-core-rd-dns-sd-00</a></d=
iv><div class=3D""><br class=3D""></div><div class=3D"">Resource =
Discovery and Service Discovery interop</div><div class=3D"">&nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</div><div class=3D"">RD =
and SD are complementary; RD typically finer-grained</div><div =
class=3D"">RD work goes back about 6 years.</div><div class=3D"">CoRE WG =
originally intended to work with dnssd, but decided to go in its own =
direction.</div><div class=3D"">Main output of CoRE is the CoAP =
protocol</div><div class=3D"">Multicast RESTful applications are =
possible.</div><div class=3D"">Send query, get back set of links that =
match the query.</div><div class=3D"">if =3D interface =
specification</div><div class=3D"">rt =3D resource type</div><div =
class=3D"">This is what we'd probably want to export to the SD world, =
from the RD; so that's what the draft discusses</div><div class=3D""><br =
class=3D""></div><div class=3D"">SC: in that example, the rt, is that =
registered in iana service type registry?</div><div class=3D""><br =
class=3D""></div><div class=3D"">CB: two registries, entries under if=3D =
and rt=3D &nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">DT: potential problem is rt values could have dots in =
them.&nbsp;</div><div class=3D"">SC: could in principle escape them; =
iana service type registry says letters, digits, =
hyphens.&nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">DT: procedural issue with kerry's example - how safe is it to =
assume that left most label is special</div><div class=3D"">K: mapping =
agent could handle, or have a convention.</div><div class=3D""><br =
class=3D""></div><div class=3D"">SC: Service is entity, has a protocol. =
Carsten talks about a Resource, it's entity you talk to, it has a =
protocol. Sounds same! So would help to figure out why resource is not a =
service.</div><div class=3D""><br class=3D""></div><div class=3D"">CB: =
Answer is reason we have the means to identify Resources that are worth =
it&nbsp;</div><div class=3D"">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp;&nbsp;</div><div class=3D"">Summary of actions and close =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp;Chairs, 5 mins</div><div class=3D""><br class=3D""></div><div =
class=3D"">The chairs stated that with only a few people having read the =
new drafts by Stuart and Ted it was too early to consider WG =
adoption.</div><div class=3D""><br class=3D""></div><div class=3D"">1) =
draft-ietf-dnssd-privacy-02 will be revved from WG feedback to -03 and =
sent to IESG; a document shepherd is needed</div><div class=3D""><br =
class=3D""></div><div class=3D"">2) Confirm the actions on splitting =
draft-ietf-dnssd-pairing-02 on the list, and submit updated draft(s) to =
include WG feedback</div><div class=3D""><br class=3D""></div><div =
class=3D"">3) Progress discussion of Stuart and Ted's new drafts on the =
mail list.</div><div class=3D""><br class=3D""></div><div class=3D"">4) =
The dnssd WG chairs will discuss a way forward for the DNS Session =
Signalling draft with the dnsop WG chairs</div><div class=3D""><br =
class=3D""></div><div class=3D"">5) Our AD will solicit expressions of =
interest for a new co-chair.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Ralph thanked everyone.</div><div =
class=3D""><br class=3D""></div><div class=3D"">Meeting closed at =
16:57.</div></div><div class=3D""><br class=3D""></div><div =
class=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=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=
=3D=3D=3D=3D=3D=3D</div><div class=3D""><br =
class=3D""></div></body></html>=

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Subject: [dnssd] dnssd - New Meeting Session Request for IETF 100
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A new meeting session request has just been submitted by dschinazi@apple.com, a Chair of the dnssd working group.


---------------------------------------------------------
Working Group Name: Extensions for Scalable DNS Service Discovery 
Area Name: Internet Area
Session Requester: David Schinazi

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 75
Conflicts to Avoid: 
 First Priority: intarea 6lo dprive homenet dnsop 6man saag v6ops
 Second Priority: dhc babel ipsecme



People who must be present:
  Ralph Droms
  Ted Lemon
  Dr. Stuart D. Cheshire
  Tim Chown
  Terry Manderson
  dschinazi@apple.com

Resources Requested:

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

