Re: RS sending in draft-ietf-v6ops-ipv6-cpe-router-04

[Philip Homburg <pch-v6ops@u-1.phicoh.com>]

In your letter dated Mon, 26 Apr 2010 15:01:44 +0200 you wrote:
>On 17/04/2010 11:53, "Philip Homburg" <pch-v6ops@u-1.phicoh.com> wrote:
>
>> In your letter dated Fri, 16 Apr 2010 11:49:18 +0200 you wrote:
>>> Which node needs the link local address of the CPE? The edge router or
>>> the access node? (using draft-krishnan-6man-rs-mark-03 terminology)
>>> 
>>> Woj> Likely both: The edge router is expected to have an address binding
>>> table per CPE and so may the access-node.
>> 
>> Maybe I'm missing something. I would expect the edge router to maintain a
>> mapping from prefix to vlan. It can then use normal neighbor discovery to
>> find the mac address for a CPE.
>
>That's not what is envisaged in the BBF and SAVI work. The L2-IP binding
>would be learned at user authentication time and likely fixed so as to
>prevent some rogue user from polluting the binding table.

The MAC address is available as the source ethernet address in the router
solicitation.

How does having a link-local IPv6 address help?

Unless, with L2-IP binding you mean a binding between the link-local address
and the MAC address. But I'm not quite sure why you would need that.