Re: VRRP for IPv6 and ND RA

Sorry for not responding sooner about this topic.  Let me try to inject 
some more information in the discussion.

The host side rules about the selection of a default router could result in 
all of the hosts selecting the same next hop default router, but they do 
not require it.  I haven't gone back over the specification in detail, but 
I think that in most cases it would depend on the order a hosts heard the 
RA.  It could range from a very even distribution to all hosts using the 
same default router.  There is an issue here, but it isn't different from 
VRRP for IPv4 as this is completely unspecified in IPv4 
ARP/RouterDiscovery/etc.

There are two documents in the IPv6 working group that relate to 
this.  These are:

   IPv6 Host to Router Load Sharing

   http://www.ietf.org/internet-drafts/draft-ietf-ipv6-host-load-sharing-02.txt

   Abstract

    The original IPv6 conceptual sending algorithm does not do load-
    sharing among equivalent IPv6 routers, and suggests schemes which
    can be problematic in practice.  This document updates the
    conceptual sending algorithm so that traffic to different
    destinations can be distributed among routers in an efficient
    fashion.

and