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

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 20 November 2013 16:04 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Athanasios Douitsis <aduitsis@gmail.com>
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Date: Wed, 20 Nov 2013 11:03:49 -0500
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Cc: "radext@ietf.org" <radext@ietf.org>, "Bernie Volz (volz)" <volz@cisco.com>, Jouni Korhonen <jouni.nospam@gmail.com>, "Roberta Maglione (robmgl)" <robmgl@cisco.com>, "dhcwg@ietf.org WG" <dhcwg@ietf.org>, "homenet@ietf.org" <homenet@ietf.org>
Subject: Re: [radext] [homenet] [dhcwg] PPP, DHCPv6 and Prefix Delegation
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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?

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


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

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