Thanks, I will have a look. I hoped it is possible without patching the kernel :(
As alreaydy mentionend, use iptables (Supported >2.4.x) which is included in the kernel. Have a look at this: http://www.fokus.gmd.de/linux/HOWTO/Adv-Routing-HOWTO-15.html Just found something with tc! http://lartc.org/howto/ http://lartc.org/howto/lartc.cookbook.ultimate-tc.html Hope it helps... - mathias -