From owner-freebsd-hackers Tue Mar 23 10:25: 9 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from orbit.flnet.com (orbit.flnet.com [205.240.232.32]) by hub.freebsd.org (Postfix) with ESMTP id 2F1AE14D85 for ; Tue, 23 Mar 1999 10:25:07 -0800 (PST) (envelope-from henrich@orbit.flnet.com) Received: (from henrich@localhost) by orbit.flnet.com (8.8.5/8.8.4) id NAA09807; Tue, 23 Mar 1999 13:24:34 -0500 (EST) Date: Tue, 23 Mar 1999 10:24:34 -0800 From: Charles Henrich To: Jim Flowers Cc: Matthew Reimer , freebsd-hackers@FreeBSD.ORG Subject: Re: NAT/SKIP/MTU Message-ID: <19990323102434.B9273@orbit.flnet.com> Mail-Followup-To: Jim Flowers , Matthew Reimer , freebsd-hackers@FreeBSD.ORG References: <36F6D023.1925D6D5@vpop.net> <001301be74ce$d63efdd0$23b197ce@ezo.net> <19990323100221.D8398@orbit.flnet.com> <001301be755a$0eed6d20$23b197ce@ezo.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <001301be755a$0eed6d20$23b197ce@ezo.net>; from Jim Flowers on Tue, Mar 23, 1999 at 01:21:21PM -0500 X-Operating-System: FreeBSD 2.2-BETA_A X-PGP-Fingerprint: 1024/F7 FD C7 3A F5 6A 23 BF 76 C4 B8 C9 6E 41 A4 4F Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On the subject of Re: NAT/SKIP/MTU, Jim Flowers stated: > Skip definitely alters the mtu downward that it presents for discovery in > order to allow for the increased size of the outbound encapsulated packets > without causing fragmentation. This is described in one of the white papers > that comes with it. Have you tried setting the mtu of the skip interface > down to something like 756? I had to do this for cvsup (< 1300) to work > reliably although I didn't ascribe the problem to SKIP at the time because > it goes through the NAT path but it still has to go through the SKIP ACL in > cleartext. - might have been. This should have the effect of causing > smaller packets to be received. I've completely removed skip from all interfaces and I still see the problems with NAT or FreeBSD when I alter the mtu.. -Crh Charles Henrich Manex Visual Effects henrich@flnet.com http://orbit.flnet.com/~henrich To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message