From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
To: netdev@vger.kernel.org, edumazet@google.com
Subject: Re: IPv6 path MTU discovery broken
Date: Sat, 28 Sep 2013 22:51:31 +0200 [thread overview]
Message-ID: <20130928205131.GB20124@sesse.net> (raw)
In-Reply-To: <20130928203318.GC23654@order.stressinduktion.org>
On Sat, Sep 28, 2013 at 10:33:18PM +0200, Hannes Frederic Sowa wrote:
>> Could this be related somehow to the packets coming from 2001:67c:29f4::31,
>> while the default route is to a link-local address? (An RPF issue?) This used
>> to work (although it was often flaky for me) in 3.10 and before. I can't
>> easily bisect, though, as I don't boot this machine too often.
> This looks like a bug and should definitely get fixed. There should be
> no RPF issue. May I have a look at your /proc/net/ipv6_route?
Hi,
I removed all the “weird” routes, and confirmed it fixed the problem.
However, upon adding them back again, the problem was still gone
(despite flushing the route cache).
This means that the issue has gone back to being intermittent, which is of
course the worst kind of bug to trace down. :-) I'll dump
/proc/net/ipv6_route and send you once I see the bug manifest itself again,
OK?
/* Steinar */
--
Homepage: http://www.sesse.net/
next prev parent reply other threads:[~2013-09-28 20:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 20:14 IPv6 path MTU discovery broken Steinar H. Gunderson
2013-09-28 20:33 ` Hannes Frederic Sowa
2013-09-28 20:51 ` Steinar H. Gunderson [this message]
2013-09-28 21:19 ` Hannes Frederic Sowa
2013-10-06 12:06 ` Steinar H. Gunderson
2013-10-06 12:44 ` Hannes Frederic Sowa
2013-10-06 12:48 ` Steinar H. Gunderson
2013-10-07 1:52 ` Hannes Frederic Sowa
2013-10-07 3:09 ` Hannes Frederic Sowa
2013-10-07 8:32 ` Steinar H. Gunderson
2013-10-07 14:32 ` Hannes Frederic Sowa
2013-10-07 14:34 ` Steinar H. Gunderson
2013-10-07 15:49 ` Eric Dumazet
2013-10-13 10:40 ` Steinar H. Gunderson
2013-10-13 16:51 ` Eric Dumazet
2013-10-13 17:56 ` Hannes Frederic Sowa
2013-10-07 8:29 ` Steinar H. Gunderson
2013-10-07 8:37 ` Steinar H. Gunderson
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