From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: linux-3.0.x regression with ipv4 routes having mtu
Date: Wed, 14 Dec 2011 12:50:10 -0500 (EST)
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=46rom: Timo Ter=E4s <timo.teras@iki.fi>
Date: Wed, 14 Dec 2011 17:54:16 +0200

> So something is does not get updated here. This used to work though.
> The current production boxes where I know this work is 2.6.38.8.

We store the PMTU externally in inetpeer entries, Eric Dumazet
fixed recently but that fix hasn't been submitted to -stable
yet.

I'd recommend using 3.1.x if possible if you can't wait.