From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
Subject: Re: strange behaviour
Date: Mon, 26 Feb 2007 16:34:56 +0100
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Cedric Blancher a =E9crit :
>=20
>    iptables -t mangle -A FORWARD -o ppp0 -j TCPMSS --clamp-mss-to-pmtu

TCPMSS works only on TCP packets with the SYN flag set, so the options=20
"-p tcp --tcp-flags SYN,RST SYN" are required.
Also, wouldn't it be useful to do it in both directions to avoid=20
fragmentation if host (b) does not use path MTU discovery ?