Hi, I want to set my NIC to run in 10Mbps or 100 Mbps and it is using 3c905c Vortex driver that comes with knoppix 3.8. ifconfig eth0 192.168.6.5 media 10baseT Error results return said "port: SIOCSIFMAP: Operation not supported". I am using kernel 2.6.11. I downloaded 3c59x.c and tried to compile and got a lot of errors. So I could not use the updated download from http://www.scyld.com/vortex.html this website. I try to use traffic control program "tc" tc add dev eth0 tcf rate 10000 burst 1000000 limit 1000000 This also return me an error said "RTNETLINK answers: Invalid argument" I ran out of idea. Please suggest what I should do. Thank you, Su - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html