Date: Fri, 3 Nov 2000 09:17:24 -0800 From: "Timothy L. Robertson" <timothyr@timothyr.com> To: "Christoph Sold" <so@server.i-clue.de>, <freebsd-stable@freebsd.org> Subject: RE: Flaky IP Connection Message-ID: <NEBBKDBFKKIDPAPJPFOPIEPBCGAA.timothyr@timothyr.com> In-Reply-To: <3A0295F2.972BC9E3@i-clue.de>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > -----Original Message----- > From: Christoph Sold [mailto:so@server.i-clue.de] > Sent: Friday, November 03, 2000 2:40 AM > To: Timothy L. Robertson > Subject: Re: Flaky IP Connection > > IIRC, a recent article in german magazine c't discussed this problem: > Since PPPoE needs room for PPP headers in each ether packet, you loose > 12 bytes per packet. Your remote site announces this correctly, causing > packet fragmentation. > > maybe I'm wrong, so please anybody speak up with more experience in > networking? > > HTH > -Christoph Sold > > This makes sense. The MTU reported by tcpdump seems to always be 12 bytes less than the MTU I set tun0 to. What do I do about it, though, to keep my connection flowing? The TCP/IP stack is supposed to probe routers by setting the don't fragment bit and watching for icmp packets and set the MTU in routing tables accordingly, but I get the feeling something is not working right here. Should I ask this question of freebsd-bugs? - -Tim -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>; iQA/AwUBOgLy5xJDu7xQsK72EQLJBwCg8aZgk+1iNGOiLvAu4F+68hrzocQAnjZk 89B1ApWDFhWWBzX606yb7lyr =CD4/ -----END PGP SIGNATURE----- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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