netdev - Re: pmtu discovery on sa esp

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Message-ID: <466E92E4.4020008@trash.net>
Date:	Tue, 12 Jun 2007 14:34:44 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Marco Berizzi <pupilla@...mail.com>
CC:	netdev@...r.kernel.org
Subject: Re: pmtu discovery on sa esp

Marco Berizzi wrote:
> Hello everybody.
> I have just upgraded from 2.6.21.3 to
> 2.6.22-rc4 and I get a ton of
> pmtu discovery on sa esp/blablab/blabla
> messages (this box is running openswan).
> Is this an expected behaviour?

We have some MTU opimiztations in 2.6.22-rc that might be related.
Please check with tcpdump what exactly is happening and whether
the 2.6.22-rc box is sending too large packets.
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