> I can have a look at using dormant, but what is change_carrier > supposed to do if not this?
It is intended for interfaces which are stacked, like the team driver, and for devices which don't have a phy, e.g. tun, and dummy. > I didn't find a tool for DORMANT, I guess i will have to write one > myself(using SIOCGIFFLAGS, SIOCSIFFLAGS)? ip link should be able to set it. Try ip link set mode dormant dev eth0 Andrew