From owner-freebsd-net Mon Jun 24 22:58:58 2002 Delivered-To: freebsd-net@freebsd.org Received: from mail.ruhr.de (in-ruhr4.ruhr.de [212.23.134.2]) by hub.freebsd.org (Postfix) with SMTP id 00C7E37B401 for ; Mon, 24 Jun 2002 22:58:47 -0700 (PDT) Received: (qmail 7191 invoked by uid 10); 25 Jun 2002 05:58:45 -0000 Received: (from ue@localhost) by nathan.ruhr.de (8.11.6/8.11.2) id g5P5uWP00973; Tue, 25 Jun 2002 07:56:32 +0200 (CEST) (envelope-from ue) Date: Tue, 25 Jun 2002 07:56:32 +0200 From: Udo Erdelhoff To: Mike Tancsa Cc: "Julian H. Stacey" , freebsd-net@FreeBSD.ORG Subject: Re: tracking down strange MTU issues with PPPoE) Message-ID: <20020625055632.GI67408@nathan.ruhr.de> Mail-Followup-To: Mike Tancsa , "Julian H. Stacey" , freebsd-net@FreeBSD.ORG References: <5.1.0.14.0.20020618163928.05018cf0@marble.sentex.ca> <5.1.0.14.0.20020624155731.0205c700@marble.sentex.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5.1.0.14.0.20020624155731.0205c700@marble.sentex.ca> User-Agent: Mutt/1.3.27i Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, On Mon, Jun 24, 2002 at 03:59:39PM -0400, Mike Tancsa wrote: > If I recall correctly, the tcpmssd > daemon was to fix client connection issue behind the FreeBSD box, not > directly from the FreeBSD box. exactly. The daemon enforces an upper limit on the MSS of any packet passing over the 'DSL link'. > Also, I thought the ppp client on FreeBSD has the mss fix built in. Yes, but the solution in PPP only allows you to lower the MSS to 1452 so that the return packet is never bigger than 1492 bytes. However, if you need an even lower MSS, you are still stuck with tcpmssd. I need to lower my MSS to about 1410 to get cvsup to work correctly. /s/Udo -- Abandon the search for Truth; settle for a good fantasy. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message