> Does anyone know how to override the autonegociation between NICs & > hubs/switches in Linux? I have a card which isn't autonegociating properly > and I want to force it to 100Mbps full duplex. Donald Becker's mii-diag works for a lot of cards. You have to compile it youself, but it's not tricky. mii-diag.c might get you some hits.