Date: Fri, 4 Oct 2002 14:07:53 +1000 (EST) From: Tony Maher <tonym@biolateral.com.au> To: mike@adept.org, stable@FreeBSD.ORG Subject: Re: 'losing' every second packet Message-ID: <200210040407.g9447rOm039347@dt.home> In-Reply-To: <20021003140708.S74025-100000@fubar.adept.org>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200210040407.g9447rOm039347>