From owner-freebsd-hackers Sat Jun 20 10:15:16 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id KAA12007 for freebsd-hackers-outgoing; Sat, 20 Jun 1998 10:15:16 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from mail.camalott.com (root@mail.camalott.com [208.203.140.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id KAA11999 for ; Sat, 20 Jun 1998 10:15:14 -0700 (PDT) (envelope-from joelh@gnu.org) Received: from detlev.UUCP (tex-124.camalott.com [208.229.74.124] (may be forged)) by mail.camalott.com (8.8.7/8.8.5) with ESMTP id MAA25648; Sat, 20 Jun 1998 12:14:38 -0500 Received: (from joelh@localhost) by detlev.UUCP (8.8.8/8.8.8) id MAA03589; Sat, 20 Jun 1998 12:14:54 -0500 (CDT) (envelope-from joelh) Date: Sat, 20 Jun 1998 12:14:54 -0500 (CDT) Message-Id: <199806201714.MAA03589@detlev.UUCP> To: spork@super-g.com CC: opsys@mail.webspan.net, root@bmccane.maxbaud.net, hackers@FreeBSD.ORG In-reply-to: (message from spork on Fri, 19 Jun 1998 22:17:09 -0400 (EDT)) Subject: Re: TweakDUN From: Joel Ray Holveck Reply-to: joelh@gnu.org References: Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >> Okay, I'm a bit confused here. How does the broken stack affect this >> issue? I thought it was a network design issue, since (if I >> understand correctly) many ISPs' uplinks use an MTU of 576, so any >> system using an MTU of 1500 (which includes the FreeBSD default) is >> going to have their packets broken into three packets of 576, 576, and >> 348 bytes. So, to reduce overhead, the MTU is set to 576 originally >> (why not 1152 I don't know) and life goes on. > I can't think of anywhere this is true. I'll use our dialup pools as an > example: [snip] > Anyone else? I've never heard of the oft quoted "Internet standard MTU of > 576"... Alright, I'll take your word for it. Why, then, does Windoze 95 benefit from using a small MTU? Happy hacking, joelh -- Joel Ray Holveck - joelh@gnu.org - http://www.wp.com/piquan Fourth law of programming: Anything that can go wrong wi sendmail: segmentation violation - core dumped To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message