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Date:      Wed, 28 Dec 2005 13:09:31 +0000
From:      Brian Candler <B.Candler@pobox.com>
To:        Gleb Smirnoff <glebius@FreeBSD.org>
Cc:        freebsd-net@FreeBSD.org, Oleg Tarasov <subscriber@osk.com.ua>
Subject:   Re: Router on 6.0-stable fails to route tcp packets due to NAT?? malfunction
Message-ID:  <20051228130930.GA6633@uk.tiscali.com>
In-Reply-To: <20051227193148.GP1496@cell.sick.ru>
References:  <1687545235.20051226134150@osk.com.ua> <1122736554.20051226175631@osk.com.ua> <20051227002927.GH1496@FreeBSD.org> <1945317870.20051227175519@osk.com.ua> <20051227193148.GP1496@cell.sick.ru>

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On Tue, Dec 27, 2005 at 10:31:48PM +0300, Gleb Smirnoff wrote:
> O> I have the latest version of ported mpd (3.18_3) installed and tried
> O> to insert
> O>          set iface enable tcpmssfix
> O> but no positive result, but I understand that this option should help
> O> in this situation.
> 
> Unfortunately this options will not help in your situation. It affects
> only the packets received on the mpd's interface, while you need
> to alter outgoing packets.
> 
> I have fixed this in mpd CVS, but this isn't included in any release
> yet. However, if you are experienced enough with CVS you can grab
> and compile sources yourself.

BTW, I found a really nice description of this problem (with colourful
diagrams and FreeBSD solutions) here:
http://renaud.waldura.com/doc/freebsd/pppoe/#pmtu

Regards,

Brian.



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