i'm fairly new to the list and just encountered this problem.. i have 2 machines, one w/ kernel 2.4.2-2 and the other w/ 2.4.12. the kernel config files are the same on both machines w/ all the same stuff compiled in. however, the 2.4.12 machine can't run tc, ip, etc (get RTNETLINK answers: Invalid argument) and the 2.4.2-2 machine has no problems. does anyone know why or how to fix. i really don't want to downgrade my kernel if i don't have to. thanks, david parks -------------------------------------------------------- when good things happen to bad people... --------------------------------------------------------