Date: Tue, 11 Apr 2006 17:07:47 -0400 From: "John B. Wood" <john.wood@nrl.navy.mil> To: freebsd-ipfw@freebsd.org Subject: FreeBSD 6.0 Buffer Overrrun System Crash Message-ID: <443C1AA3.9090705@nrl.navy.mil>
next in thread | raw e-mail | index | archive | help
Hello, everyone. Several months ago I reported problems I was having in obtaining a stable bridging with Dummynet platform(Dell Dimension 3000) as a result of a receive buffer overrun on the em0 interface. Instead of using Dummynet pipes to set up a controlled packet loss (25%) scenario I tried bridging and IPFW without Dummynet as follows: ipfw add 100 prob 0.25 deny ip from any to any bridged ipfw add 200 allow ip from any to any bridged After several minutes of operating as expected the system crashes with the kernel message "em0: RX overrun" and the system has to be rebooted. This is the same error I got using Dummynet. I also tried John Nielsen's configuration (cf this mailing list 4/7/06) to no avail. Does anyone have a fix? Thanks for your time and comment. Sincerely, -- __ __ ______ __ John Wood / |\ / /\ / ____ \ / /\ Code 5551 / | ||/ / / / /\__/ /| / / / U.S. Naval Research Lab / /| |/ / / / /_/_/ / / / / / 4555 Overlook Avenue, SW / / | / / / ___ / / / / / Washington, DC 20375-5337 / / /| / / / /\_| |\_/ / /_/_ (202) 767-2608 /_/ / |_/ / /_/ / |_|| /_____/\ (202) 767-3377 (FAX) \_\/ \_\/ \_\/ \_\| \_____\/ e-mail: wood@itd.nrl.navy.mil WWW: http://server5550.itd.nrl.navy.mil If you work on your mind with your mind, how can you avoid immense confusion? - Seng-Ts'an
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?443C1AA3.9090705>