From owner-freebsd-current@FreeBSD.ORG Wed Feb 6 09:51:26 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D89F916A41B for ; Wed, 6 Feb 2008 09:51:26 +0000 (UTC) (envelope-from dwmalone@maths.tcd.ie) Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [IPv6:2001:770:10:300::86e2:510b]) by mx1.freebsd.org (Postfix) with SMTP id 383CF13C457 for ; Wed, 6 Feb 2008 09:51:26 +0000 (UTC) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie ([134.226.81.10] helo=walton.maths.tcd.ie) by salmon.maths.tcd.ie with SMTP id ; 6 Feb 2008 09:51:24 +0000 (GMT) Date: Wed, 6 Feb 2008 09:51:24 +0000 From: David Malone To: Nikolay Pavlov Message-ID: <20080206095124.GA45102@walton.maths.tcd.ie> References: <200802042142.38606.qpadla@gmail.com> <47A82DA5.3060504@bulinfo.net> <200802060432.08445.qpadla@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200802060432.08445.qpadla@gmail.com> User-Agent: Mutt/1.5.6i Sender: dwmalone@maths.tcd.ie Cc: Krassimir Slavchev , freebsd-current@freebsd.org Subject: Re: IP bad-len 0 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2008 09:51:26 -0000 On Wed, Feb 06, 2008 at 04:32:07AM +0200, Nikolay Pavlov wrote: > On Tuesday 05 February 2008 11:34:29 Krassimir Slavchev wrote: > > Hi, > > Can you try: > > net.inet.tcp.rfc1323=0 > > Not working for me. Any other thoughts? rfc1323 is unlikely to produce zero length IP packets. I'd suggest running tcpdump with the "-X" and "-e" flags - that way you will be able to see the MAC address of the machine sending these packets. You'll also be able to see a hex dump of them, which may help figuring out what is going on. David.