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Re: [dhcwg] [radext] [homenet] PPP, DHCPv6 and Prefix Delegation

Athanasios Douitsis <aduitsis@gmail.com> Wed, 20 November 2013 17:07 UTC

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From: Athanasios Douitsis <aduitsis@gmail.com>
Date: Wed, 20 Nov 2013 19:07:38 +0200
To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: "radext@ietf.org" <radext@ietf.org>, "Bernie Volz (volz)" <volz@cisco.com>, "dhcwg@ietf.org WG" <dhcwg@ietf.org>, "homenet@ietf.org" <homenet@ietf.org>
Subject: Re: [dhcwg] [radext] [homenet] PPP, DHCPv6 and Prefix Delegation
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20 Νοε 2013, 6:03 μ.μ., ο/η Michael Richardson <mcr+ietf@sandelman.ca> έγραψε:

> 
> Athanasios Douitsis <aduitsis@gmail.com> wrote:
>> Hello Michael,
> 
>> When I said "problematic" yesterday, I meant problematic for the delegating
>> router. If the other side (requesting router - CPE) is not exclude-capable then
>> is it not illegal for the delegating router to delegate a prefix and at the
>> same time use part of it to enumerate one its interfaces? So a set of
>> attributes where the Framed-IPv6-Prefix is contained in the
>> Delegated-IPv6-Prefix may result in error.
> 
> How could a BNG know if the requesting router is exclude capable?
> 
> Would this by having the option in the DHCPv6 Request list?

Yes. 


> 
> If the WAN was numbered by RA, then I guess the DHCPv6 server would have to
> do the split prefix in half trick.
> 

Yes, that was suggested by Jouni previously. 


> 
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
> 
>

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