Date: Sun, 16 Jul 2000 09:32:18 -0400 (EDT) From: "Chris D. Faulhaber" <jedgar@fxp.org> To: Ben Smithurst <ben@FreeBSD.org> Cc: doc@FreeBSD.org Subject: Re: Suggested addition to PPP FAQ - solution for Macintoshes and Black Hole DSL routers Message-ID: <Pine.BSF.4.21.0007160931220.95017-100000@pawn.primelocation.net> In-Reply-To: <20000716141850.U84045@strontium.scientia.demon.co.uk>
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On Sun, 16 Jul 2000, Ben Smithurst wrote: > Chris D. Faulhaber wrote: > > > <question> > > - <para>Why do my Windows 98 connections freeze when I run PPPoE on the gateway</para> > > + <para>Why do Mac and Windows 98 connections freeze when running PPPoE on the gateway</para> > > </question> > > I think I'd say "MacOS" instead of "Mac" here. > Agreed > > <para> > > - This is due to what's called a "Black Hole" router. Windows 98 (and > > - maybe other Microsoft OSs) is sending TCP packets with a requested > > - segment size too big to fit into a PPPoE frame (MTU is 1500 by default > > - for ethernet) <emphasis remap=bf>and</emphasis> have the "don't fragment" > > - bit set (default of TCP) and the Telco router is not sending ICMP "must > > + This is due to what's called a "Black Hole" router. MacOS and Windows 98 > > + (and maybe other Microsoft OSs) send TCP packets with a requested segment > > + size too big to fit into a PPPoE frame (MTU is 1500 by default for > > + ethernet) <emphasis remap=bf>and</emphasis> have the "don't fragment" bit > > + set (default of TCP) and the Telco router is not sending ICMP "must > > I've reorganised that so fewer lines are changed (I think it's easier > for translators that way). > > ... > <para> > - This is due to what's called a "Black Hole" router. Windows 98 (and > - maybe other Microsoft OSs) is sending TCP packets with a requested > + This is due to what's called a "Black Hole" router. MacOS and Windows 98 (and > + maybe other Microsoft OSs) send TCP packets with a requested > segment size too big to fit into a PPPoE frame (MTU is 1500 by default > ... > > I'll commit your patch soon unless anyone objects, or you'd rather do it > yourself. It's a bit better than the patch I created was, anyway. :-) > Go ahead and take care of it. ----- Chris D. Faulhaber - jedgar@fxp.org - jedgar@FreeBSD.org -------------------------------------------------------- FreeBSD: The Power To Serve - http://www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the message
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