From owner-freebsd-questions Thu Mar 18 1:24: 4 1999 Delivered-To: freebsd-questions@freebsd.org Received: from awfulhak.org (awfulhak.force9.co.uk [195.166.136.63]) by hub.freebsd.org (Postfix) with ESMTP id 72A6215520 for ; Thu, 18 Mar 1999 01:24:00 -0800 (PST) (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (keep.lan.Awfulhak.org [172.16.0.8]) by awfulhak.org (8.9.2/8.8.8) with ESMTP id JAA46174; Thu, 18 Mar 1999 09:23:37 GMT (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (localhost [127.0.0.1]) by keep.lan.Awfulhak.org (8.9.3/8.9.3) with ESMTP id IAA09478; Thu, 18 Mar 1999 08:58:36 GMT (envelope-from brian@keep.lan.Awfulhak.org) Message-Id: <199903180858.IAA09478@keep.lan.Awfulhak.org> X-Mailer: exmh version 2.0.2 2/24/98 To: schmitt@penta.ufrgs.br Cc: freebsd-questions@FreeBSD.ORG Subject: Re: SKIP and NAT, I got it. In-reply-to: Your message of "Wed, 17 Mar 1999 17:13:07 -0300." <36F00CD3.163F743E@penta.ufrgs.br> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Date: Thu, 18 Mar 1999 08:58:36 +0000 From: Brian Somers Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I had never send a mail to the list, but as I realized that some guys > had problems putting NAT and SKIP in the same interface, I would like t= o > = > contribute with my solution. I didn=B4t put them in paralel. The situat= ion [.....] > when the packet is destined to the tunnel. So I had to alter MTU in > every workstation of my network. That=B4s very bad. > = > What I would like to know is why the packet is first encapsulated b= y > = > skip and only after that the system finds out that it can=B4t be > transmitted because of MTU. Strange... the kernel will pay attention to the interface MTU. I've never used skip, but I would imagine that it should reduce the = interface mtu by ~128 bytes so that it has room to encapsulate the = data (does skip encrypt too ? If so, it'll probably need a few = bytes more than 128). Is this happening ? > Marcelo Augusto Rauh Schmitt > COPS Informatica - > Porto Alegre - RS > Brazil -- = Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message