Date: Thu, 3 Oct 2002 10:38:59 +1000 From: Peter Jeremy <peter.jeremy@alcatel.com.au> To: Tony Maher <tonym@biolateral.com.au> Cc: stable@FreeBSD.ORG Subject: Re: 'losing' every second packet Message-ID: <20021003003859.GN495@gsmx07.alcatel.com.au> In-Reply-To: <200210022355.g92NtU1o029952@dt.home> References: <200210022355.g92NtU1o029952@dt.home>
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On 2002-Oct-03 09:55:30 +1000, Tony Maher <tonym@biolateral.com.au> 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
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