It looks like all the versions of ping that I can find do not support binding to a local interface, which would make ping and source-based routing work. Any idea how hard it would be to make ping bind to a local interface (I know the system calls, just not sure of protocol implications...) Does anyone know of a collection of tools that allow binding to specific local interfaces so that source-based routing can be used? Thanks, Ben -- Ben Greear (greearb@candelatech.com) http://www.candelatech.com Author of ScryMUD: scry.wanfear.com 4444 (Released under GPL) http://scry.wanfear.com http://scry.wanfear.com/~greear - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu