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Re: [netlmm] Issue: MAG sends prefix hint to LMA (Was: Issue: Link-local address collision on the access link)

Julien Laganier <julien.IETF@laposte.net> Wed, 22 August 2007 16:23 UTC

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From: Julien Laganier <julien.IETF@laposte.net>
To: Sri Gundavelli <sgundave@cisco.com>
Subject: Re: [netlmm] Issue: MAG sends prefix hint to LMA (Was: Issue: Link-local address collision on the access link)
Date: Wed, 22 Aug 2007 18:23:31 +0200
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On Wednesday 22 August 2007, Sri Gundavelli wrote:
> Behcet,
>
> Yes, the hint for the requesting prefix can be carried
> in the HNP Option. However, LMA should have the right
> to accept or reject the request for that prefix. This is
> one opinion.
>
> Today, a DHCP client can specify an address in the DHCP
> request. The same logic can go here.

I believe the issue Behcet is referring to is that there's no DHCP 
option to store an allocated prefix in a DHCP message -- there are 
fields for addresses (IA Address) and delegated prefixes (IA_PD Prefix) 
but none for *allocated* prefixes.

--julien

> On Wed, 22 Aug 2007, Behcet Sarikaya wrote:
> > As we mentioned in draft-sarikaya-netlmm-prefix-delegation-00.txt
> > conceptually LMA as the requesting router may provide a prefix hint
> > to DHCP/ AAA server if PD is being used. How would MAG provide the
> > hint, in HNP?

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