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

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Message-ID: <AANLkTikiWL+0h4aMv7DvouGudOCVyocuP0BvNL6_Yt+s@mail.gmail.com>
Date:	Thu, 28 Oct 2010 15:41:13 -0700
From:	Lorenzo Colitti <lorenzo@...gle.com>
To:	Maciej Żenczykowski <zenczykowski@...il.com>
Cc:	netdev@...r.kernel.org, Brian Haley <brian.haley@...com>
Subject: Re: [PATCH] ipv6: addrconf: clear IPv6 addresses and routes when
 losing link

On Thu, Oct 28, 2010 at 3:23 PM, Lorenzo Colitti <lorenzo@...gle.com> wrote:
> It's random, but the random interface ID is a property of the
> interface, not of the address, and thus survives interface up/down:

Also note that it's fairly trivial, instead of deleting all privacy
addresses when link is lost, to simply deprecate them so they
automatically come back after link comes back if an RA refreshes their
lifetime.

I'd rather not do this, because it introduces a brief window on link
up where the system has broken IPv6 connectivity and all connection
attempts hang for three minutes. But if this is the only alternative
to the current behaviour (where all connection attempts hang forever
until all old addresses have exhausted their lifetimes), then we can
do it.
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