Subject: Re: pmtu discovery on sa esp

From: Patrick McHardy <[email-masked]>
Date: Tue, 12 Jun 2007 14:34:44 +0200

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.