From owner-freebsd-stable Wed May 16 8:22:17 2001 Delivered-To: freebsd-stable@freebsd.org Received: from thehousleys.net (frenchknot.ne.mediaone.net [24.147.224.201]) by hub.freebsd.org (Postfix) with ESMTP id 485F537B422 for ; Wed, 16 May 2001 08:22:11 -0700 (PDT) (envelope-from jim@thehousleys.net) Received: (from root@localhost) by thehousleys.net (8.11.3/8.11.2) id f4GFM7D21022; Wed, 16 May 2001 11:22:07 -0400 (EDT) (envelope-from jim@thehousleys.net) Received: from thehousleys.net (baby.int.thehousleys.net [192.168.0.24]) (authenticated) by thehousleys.net (8.11.3/8.11.3) with ESMTP id f4GFM5m21012; Wed, 16 May 2001 11:22:05 -0400 (EDT) (envelope-from jim@thehousleys.net) Message-ID: <3B029B1D.FA853EFF@thehousleys.net> Date: Wed, 16 May 2001 11:22:05 -0400 From: James Housley X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.2.12 i386) X-Accept-Language: en MIME-Version: 1.0 To: "Rodney W. Grimes" Cc: freebsd-stable@freebsd.org Subject: Re: ppp problems on 4.3-RELEASE and PPPoE References: <200105161519.IAA09749@gndrsh.dnsmgr.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Virus-Scanned: by AMaViS perl-10 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Rodney W. Grimes" wrote: > > Someplace along the network path between the client and server someone > is probably blocking icmp packets, and thus causing path MTU discovery > to fail. > > You have a non standard MTU of 1492 on your PPP link, and without the > ICMP type 3, code 4 packets getting through the windblows box is going > to use an MTU of 1500. > > Good luck in finding the person dropping ICMP type 3 packets in your > path, unless it happens to be you.... > I know! That is why the "tcpmssfixup" option was added to ppp and enabled by default. With this option the ICMP type 3 and 4 messages aren't needed. ppp is suposed to fix the packet size. Jim -- /"\ ASCII Ribbon Campaign . \ / - NO HTML/RTF in e-mail . X - NO Word docs in e-mail . / \ ----------------------------------------------------------------- jeh@FreeBSD.org http://www.FreeBSD.org The Power to Serve jim@TheHousleys.Net http://www.TheHousleys.net --------------------------------------------------------------------- "...there's no idea that's so good you can't ruin it with a few well-placed idiots." -- Charles Spickman To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message