From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when
 losing link
Date: Tue, 26 Oct 2010 11:21:03 -0700 (PDT)
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From: Lorenzo Colitti <lorenzo@google.com>
Date: Tue, 26 Oct 2010 11:02:45 -0700

> On Tue, Oct 26, 2010 at 10:55 AM, David Miller <davem@davemloft.net> wrote:
>>> Are there? For wifi you could look at the SSID (though even that is no
>>
>> I'm saying to check the AP's MAC.
> 
> Ah yes, that works better. But for wired? Or do you think it should be
> fixed only for wifi?

For now the case where it is most important to do something, and
the situation is common, seems to be wireless.

BTW, we already have a NETDEV_NOTIFY_PEERS notifier for faster
failover.  It's used in ipv4 to generate gratuitous ARPs.

Maybe it could be used for your case too somehow.  Just an idea.