netdev - Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when losing link

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Message-ID: <AANLkTikhhsEu7zzYpEH-Dby_Ke77iSo0z1wu2t-xU+Jc@mail.gmail.com>
Date:	Wed, 27 Oct 2010 09:01:25 -0700
From:	Lorenzo Colitti <lorenzo@...gle.com>
To:	David Miller <davem@...emloft.net>
Cc:	brian.haley@...com, shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when
 losing link

On Wed, Oct 27, 2010 at 8:51 AM, David Miller <davem@...emloft.net> wrote:
>> As the patch stands, they don't. Only autoconfigured addresses will be
>> cleared, because addrconf_ifdown() does not remove any addresses that
>> are permanent (unless they are link-local, in which case they are
>> recreated as soon as link comes back).
>
> Ok, and that brings us back to the issue of losing a TCP connection
> over a link-local et al. address during a minor link flap.

TCP connections don't go away when the address they are using goes
away. They go away if their address goes away forever. As mentioned
above in the thread, I did test this :)
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