From owner-freebsd-stable Thu Oct 3 21: 8:34 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 D402237B401 for ; Thu, 3 Oct 2002 21:08:32 -0700 (PDT) Received: from yellow.biolateral.com.au (yellow.biolateral.com.au [129.78.217.60]) by mx1.FreeBSD.org (Postfix) with ESMTP id B432543E3B for ; Thu, 3 Oct 2002 21:08:20 -0700 (PDT) (envelope-from tonym@biolateral.com.au) Received: from dt.home (localhost [127.0.0.1]) by yellow.biolateral.com.au (8.12.6/8.12.6) with ESMTP id g94480vS039435; Fri, 4 Oct 2002 14:08:00 +1000 (EST) (envelope-from tonym@dt.home) Received: (from tonym@localhost) by dt.home (8.12.6/8.12.6/Submit) id g9447rOm039347; Fri, 4 Oct 2002 14:07:53 +1000 (EST) (envelope-from tonym) Date: Fri, 4 Oct 2002 14:07:53 +1000 (EST) From: Tony Maher Message-Id: <200210040407.g9447rOm039347@dt.home> To: mike@adept.org, stable@FreeBSD.ORG Subject: Re: 'losing' every second packet In-Reply-To: <20021003140708.S74025-100000@fubar.adept.org> 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 Hello, Andrew Heybey wrote: >> Regardless, deleting the arp cache periodcially fixes the problem. Mike Hoskins wrote: > Rather than deleting all entries, does simply re-establishing the > gateway's entry have a simialr effect? Well I can confirm that 'arp -ad' fixes my problem. Also the latest 'lose every second packet' problem occured at about the same time as a dhcp lease was due to expire (or rebind). Comparing data from /var/db/dhclient.leases and messages from /var/log/messages there appears to be a correlation (out by exactly 30 mins): rebind 5 2002/10/4 01:57:49; Oct 4 01:27:49 c17160 dhclient: New Network Number: 210.49.150.0 Oct 4 01:27:49 c17160 dhclient: New Broadcast Address: 210.49.150.255 No network problems. Unlikely there was any traffic going thru firewall. rebind 5 2002/10/4 12:30:06; Oct 4 12:00:06 c17160 dhclient: New Network Number: 210.49.150.0 Oct 4 12:00:06 c17160 dhclient: New Broadcast Address: 210.49.150.255 Problem occured after this event. Likely significant network traffic going thru firewall. This seems to indicate a problem with the rebind of dhcp leases and traffic going thru the firewall. It would explain why I see this problems at random intervals from 12 to 72hrs (and usually around the 24hr mark). > Packet analysis is certainly a useful tool at this point... Hopefully next time I get the problem I will be at home and can access the firewall machine internally and can try just reseting the gateway entry and some packet analysis as suggested. thanks -- tonym To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message