Date: Wed, 16 May 2001 11:22:05 -0400 From: James Housley <jim@thehousleys.net> To: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> Cc: freebsd-stable@freebsd.org Subject: Re: ppp problems on 4.3-RELEASE and PPPoE Message-ID: <3B029B1D.FA853EFF@thehousleys.net> References: <200105161519.IAA09749@gndrsh.dnsmgr.net>
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"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
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