From owner-freebsd-net Thu Nov 23 15:10:59 2000 Delivered-To: freebsd-net@freebsd.org Received: from mail.interware.hu (mail.interware.hu [195.70.32.130]) by hub.freebsd.org (Postfix) with ESMTP id 358F037B479 for ; Thu, 23 Nov 2000 15:10:56 -0800 (PST) Received: from kairo-29.budapest.interware.hu ([195.70.50.93] helo=elischer.org) by mail.interware.hu with esmtp (Exim 3.16 #1 (Debian)) id 13z5Vz-0000X9-00; Fri, 24 Nov 2000 00:10:52 +0100 Message-ID: <3A1DA3F2.9C02F1B7@elischer.org> Date: Thu, 23 Nov 2000 15:10:42 -0800 From: Julian Elischer X-Mailer: Mozilla 4.7 [en] (X11; U; FreeBSD 5.0-CURRENT i386) X-Accept-Language: en, hu MIME-Version: 1.0 To: Samir Girdhar Cc: freebsd-net@freebsd.org Subject: Re: PPPoE, nat, dsl, some web sites References: <00Nov23.162928edt.453134-28539@jane.cs.toronto.edu> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Samir Girdhar wrote: > > On Wed, 15 Nov 2000 16:59:20 -0500 "Renaud Waldura" wrote: > > Sounds like the infamous PMTU problem. Read this, section 6.3 especially: > > http://renaud.waldura.com/doc/freebsd-pppoe/ > > > > I've been using the NAT capabilities built into ppp(8) and have > had no problems maintaining simultaneous connections to multiple > DSL providers (default route through my ISP, static routes to > the university) -- it properly NATs the traffic going out each > link. > > But with the problems around the PMTU/MSS/broken routers, I've > been looking at tcpmssd as a workaround. > > However, the docs indicate that it needs to work with natd(8) > but, from what I've been reading, it seems to me that natd > can only handle one external interface. It doesn't look like > running a separate instance for each external interface is the > answer, either. > > When I get some time (ie. after LISA) I intend to try a few > different things including: I believe that the tcpmssd port can work with ppp as well. > > - trying to run two natds > - diverting to tcpmssd before passing the packets to ppp > for NAT > - having ipfw/natd/tcpmssd take care of the traffic going > to my ISP and ppp+NAT take care of the traffic on the > link to the university (but then I haven't addressed > the PMTU breakage on this link) > > Anyone have any suggestions? Have I missed something obvious? > Someone must have faced this sort of thing already, no? > > Thanks, > Samir > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message -- __--_|\ Julian Elischer / \ julian@elischer.org ( OZ ) World tour 2000 ---> X_.---._/ presently in: Budapest v To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message