On 2011-06-19, Claudio Jeker <cje...@diehard.n-r-g.com> wrote: > On Sun, Jun 19, 2011 at 11:30:19AM +0200, Andreas Bartelt wrote: >> ... I've seen this >> even when the wired interface is down.
> Welcome to IPv6 where source address selection is so complex that nobody > understands it. In the end it often selects the address that is > numerically closest to the destination. So yes, IPv6 tends to do stupid > things and this is actually the way IETF wants it to be. it would make sense to skip addresses from interfaces which are down, this may well affect carp interfaces in "backup" state too. the 'numerically closest' thing made some kind of sense in the bad old days when multihomed "end users" were expected to list an address from each v6 upstream in DNS, rather than using PA/PI announcements... presumably if we have source addresses associated with route table entries sometime in future this would be a way to override the insanity.
