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To: tjc@ecs.soton.ac.uk
Cc: dnsop@cafax.se, dhcwg@ietf.org
From: SHIRASAKI Yasuhiro <yasuhiro@nttv6.jp>
Date: Fri, 14 Nov 2003 05:12:05 +0900 (JST)
In-Reply-To: <20031113191145.GS3473@login.ecs.soton.ac.uk>
Sender: owner-dnsop@cafax.se
Subject: Re: [dhcwg] Renumbering DNS with stateless DHCPv6 - bug?

On Thu, 13 Nov 2003 19:11:45 +0000,
Tim Chown <tjc@ecs.soton.ac.uk> wrote:
> One option for passing the new DNS options from the DHCPv6 Light server
> to the client is a multicast Reconfigure message.    That would work 
> if the DHCPv6 Light server is on link, but if relays are used and there
> is no multicast routing on site, this seems to be a gap (and a case for the 
> RA method - though of course with RA method you still need to reconfigure 
> the router for the new RA...)

Both setting the trigger of re-request on renumbering of prefix in RA,
and a multicast Reconfigure message might cause all nodes to rush on
the single DHCPv6-lite server for information-request reply exchange.
It could work with small number of clients though.

Periodical information-request from client side as Ralph suggested,
and multicast advertisement of DNS option itself (w/ DHCPv6-lite, RA, SLP)
seems to work with large number of clients.

--
SHIRASAKI Yasuhiro
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