From owner-freebsd-questions Thu Dec 26 8:54:12 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0406937B401 for ; Thu, 26 Dec 2002 08:54:11 -0800 (PST) Received: from web14809.mail.yahoo.com (web14809.mail.yahoo.com [216.136.224.230]) by mx1.FreeBSD.org (Postfix) with SMTP id 5FCE543F22 for ; Thu, 26 Dec 2002 08:54:10 -0800 (PST) (envelope-from rosti_bsd@yahoo.com) Message-ID: <20021226165410.19581.qmail@web14809.mail.yahoo.com> Received: from [192.117.108.59] by web14809.mail.yahoo.com via HTTP; Thu, 26 Dec 2002 08:54:10 PST Date: Thu, 26 Dec 2002 08:54:10 -0800 (PST) From: Rostislav Krasny Subject: RE: PPPoE and troubles with TCP To: "Sten_Daniel_Sørsdal" , stacey@vickiandstacey.com Cc: freebsd-net@freebsd.org, FreeBSD Questions In-Reply-To: <0AF1BBDF1218F14E9B4CCE414744E70F07DE19@exchange.wanglobal.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG --- Sten_Daniel_Sørsdal wrote: > > Have you remembered to setup anything to fix the MSS in TCP packets > going through? RASPPPOE in my Win98SE have such option enabled by default. It's described there to solve problem with ICS (Internet Connection Sharing). I don't see any difference when it is disabled or enabled. RASPPPOE works just good with MTU == 1492 in my Win98SE. However my FreeBSD in the same box have troubles with TCP when I use PPPoE with MTU == 1492. The configuration of TCP MSS in my FreeBSD is default, I didn't change it. > You have disabled encryption and compression right? Yes, all types of compression and encryption are disabled, see my previous post with /etc/ppp/ppp.conf there. P.S. PPPoE use 8 bytes in each ethernet packet this is the reason why 1492 is the maximum MTU with PPPoE. I found that MTU == 1484 solve my problem, read my previous posts. But, 1484 = 1492 - 8 ! It looks like double PPPoE usage or lack of correspondence to the standard of PPPoE protocol described in RFC 2516. Maybe PPPoE implementation in FreeBSD have a bug? __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message