From owner-freebsd-stable Wed Oct 2 17:39:15 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4F38D37B401 for ; Wed, 2 Oct 2002 17:39:14 -0700 (PDT) Received: from alcanet.com.au (mail2.alcanet.com.au [203.62.196.17]) by mx1.FreeBSD.org (Postfix) with ESMTP id E2DDE43E42 for ; Wed, 2 Oct 2002 17:39:12 -0700 (PDT) (envelope-from peter.jeremy@alcatel.com.au) Received: from sydsmtp01.alcatel.com.au (IDENT:root@localhost.localdomain [127.0.0.1]) by alcanet.com.au (8.12.4/8.12.4/Alcanet1.3) with ESMTP id g930d0u9002683; Thu, 3 Oct 2002 10:39:00 +1000 Received: from gsmx07.alcatel.com.au ([139.188.20.247]) by sydsmtp01.alcatel.com.au (Lotus Domino Release 5.0.11) with ESMTP id 2002100310385950:15656 ; Thu, 3 Oct 2002 10:38:59 +1000 Received: from gsmx07.alcatel.com.au (localhost [127.0.0.1]) by gsmx07.alcatel.com.au (8.12.5/8.12.5) with ESMTP id g930cx2t060632; Thu, 3 Oct 2002 10:38:59 +1000 (EST) (envelope-from peter.jeremy@alcatel.com.au) Received: (from jeremyp@localhost) by gsmx07.alcatel.com.au (8.12.5/8.12.5/Submit) id g930cxkN060631; Thu, 3 Oct 2002 10:38:59 +1000 (EST) (envelope-from peter.jeremy@alcatel.com.au) Date: Thu, 3 Oct 2002 10:38:59 +1000 From: Peter Jeremy To: Tony Maher Cc: stable@FreeBSD.ORG Subject: Re: 'losing' every second packet Message-ID: <20021003003859.GN495@gsmx07.alcatel.com.au> Mail-Followup-To: Tony Maher , stable@FreeBSD.ORG References: <200210022355.g92NtU1o029952@dt.home> Mime-Version: 1.0 In-Reply-To: <200210022355.g92NtU1o029952@dt.home> User-Agent: Mutt/1.4i X-MIMETrack: Itemize by SMTP Server on SYDSMTP01/AlcatelAustralia(Release 5.0.11 |July 24, 2002) at 03/10/2002 10:38:59 AM, Serialize by Router on SYDSMTP01/AlcatelAustralia(Release 5.0.11 |July 24, 2002) at 03/10/2002 10:39:01 AM, Serialize complete at 03/10/2002 10:39:01 AM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 2002-Oct-03 09:55:30 +1000, Tony Maher wrote: >about 3-4 weeks ago my home firewall started to exhibit a strange >behaviour of losing what appears to be every second packet but _only_ >after it has been running for more than 12 hrs (typically around the >24hr mark). The only way to 'fix' it is to reboot. Restarting firewall >rules does not help. I'm also using Optus cable, but with -STABLE from about a week ago and IPfilter rather than ipfw. (I found that ipfw+natd+keep-state didn't work). I haven't seen this problem and can't suggest any obvious cause within FreeBSD. It is possible that Optus have added something to their firewall to 'discourage' incoming setup packets (to enforce their "no servers" policy). All I can suggest is running tcpdump on your firewall and a remote machine and studying the packet loss when you send various packets between the machines (ping, UDP and TCP). This might identify where (in which direction) the packet loss is occurring. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message