Subject: Re: Last Call: draft-ietf-mext-nemo-pd (DHCPv6 Prefix Delegation
 for	NEMO) to Proposed Standard
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From: Wassim Haddad <wassim.haddad@ericsson.com>
In-Reply-To: <4C87A4A8.6060909@gmail.com>
Date: Wed, 8 Sep 2010 22:54:57 -0700
Message-ID: <B1762FEA-D894-4D15-82B1-2D6A3AFFF481@ericsson.com>
References: <20100907153620.7037.57685.idtracker@localhost>
 <4C87A4A8.6060909@gmail.com>
To: Alexandru Petrescu <alexandru.petrescu@gmail.com>
Cc: IETF Discussion <ietf@ietf.org>, mext <mext@ietf.org>
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On Sep 8, 2010, at 7:58 AM, Alexandru Petrescu wrote:

> I agree mainly with the document draft-ietf-mext-nemo-pd.
>=20
> It is good and needed to dynamically assign a Mobile Network Prefix to
> the NEMO-enabled Mobile Router.
>=20
> However, here are a couple of missing points.
>=20
> One missing point is about how will the Mobile Router configure its
> default route on the home link?  I thought Prefix Delegation would =
bring
> DHCP in the picture and would allow MR to synthesize a default route
> even though RAs are absent.  But I now realize that a DHCPv6-PD
> implementation (and std?) does not allow a router (MR) to synthesize =
its
> default route (neither RA does, nor DHCPv6-nonPD does).

=3D> Am not sure I understand from your comment where the problem really =
lies.=20
If neither RA does the job nor DHCPv6 then why do you think this problem =
(if it=20
is really a problem) should be adressed in this particular draft and not =
in a more
general way?


Wassim H.


> Another missing point is that this spec talks _only_ one specific case
> where DHCPv6-PD is used _without_ a real Relay: the MR is Client and
> Relay and the HA is the Server DR.  My deployment is different: the MR=20=

> is not the Relay, just Client; and the Server DR is not HA.  For this =
to=20
> work there are some modifications needed on the DHCPv6 Relay=20
> implementation and std (manage the the allocated prefix in the Relay's=20=

> routing table).
>=20
> I believe this model of deploying DHCPv6-PD (HA is not Server, Client =
is
> not Relay) is inline with existing DHCPv4 deployments and that gives
> an easy v6 migration path.
>=20
> There are several ways of addressing these two missing points.
>=20
> Alex
>=20
>=20
> Le 07/09/2010 17:36, The IESG a =E9crit :
>> The IESG has received a request from the Mobility EXTensions for
>> IPv6 WG (mext) to consider the following document:
>>=20
>> - 'DHCPv6 Prefix Delegation for NEMO '
>> <draft-ietf-mext-nemo-pd-06.txt>  as a Proposed Standard
>>=20
>> The IESG plans to make a decision in the next few weeks, and solicits
>> final comments on this action.  Please send substantive comments to
>> the ietf@ietf.org mailing lists by 2010-09-21. Exceptionally,
>> comments may be sent to iesg@ietf.org instead. In either case, please
>> retain the beginning of the Subject line to allow automated sorting.
>>=20
>> The file can be obtained via
>> http://www.ietf.org/internet-drafts/draft-ietf-mext-nemo-pd-06.txt
>>=20
>>=20
>> IESG discussion can be tracked via
>> =
https://datatracker.ietf.org/public/pidtracker.cgi?command=3Dview_id&dTag=3D=
17328&rfc_flag=3D0
>>=20
>>=20
>>=20
> No IPR declarations were found that appear related to this I-D.
>> _______________________________________________ IETF-Announce
>> mailing list IETF-Announce@ietf.org
>> https://www.ietf.org/mailman/listinfo/ietf-announce
>>=20
>=20
>=20
> _______________________________________________
> Ietf mailing list
> Ietf@ietf.org
> https://www.ietf.org/mailman/listinfo/ietf

Regards,

Wassim H.






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