From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter List <netfilter@vger.kernel.org>
Subject: Re: Ugly problem with ebtables
Date: Tue, 28 Apr 2009 11:40:38 +0200 [thread overview]
Message-ID: <49F6CF16.2060508@plouf.fr.eu.org> (raw)
In-Reply-To: <07d1b2f79cd9ef9765046bb4503bc658.squirrel@limbo.ari.es>
Juan Antonio a écrit :
>
>> Couldn't it be an MTU problem in the tunnel ? AFAIK, when TCP transmits
>> a message which must be segmented, it sends maximum-size segments
>> without the PUSH flag and a last smaller segment with the PUSH flag set
>> containing the remaining data.
>
> I know that, really this is the problem. The first segments without the
> PUSH flag dissapear completely in spite of these go out for the tunnel .
> The MTU is the first thing that I verified and this is 1500 in both sides.
Did you check that the tunnel can actually handle packets of that size,
for example by sending pings of various sizes up to 1500 through it ?
Tunnel encapsulation adds overhead, which might create fragmentation or
other issues.
next prev parent reply other threads:[~2009-04-28 9:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-27 10:02 Ugly problem with ebtables Juan Antonio Rodriguez Moreno
2009-04-27 13:30 ` Pascal Hambourg
2009-04-27 20:26 ` Juan Antonio
2009-04-28 9:40 ` Pascal Hambourg [this message]
2009-04-28 11:56 ` Juan Antonio
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