Oprava, to eth0 som tam vlozil kopirovanim, samozrejme ze zadavam wlan0
v root terminale zadam:
ip link set dev wlan0 down ; ip link set dev wlan0 address 11:22:33:44:55:66 ; ip link set dev wlan0 up
a terminal mi odpise: RTNETLINK answers: Cannot assign requested address
a po zadani ifconfig opat ukazuje povodnu MAC adresu USB wifi adaptera.
Zaujimave je aj to, ze aj ked zadam ip link set dev wlan0 down po chvili wlan0 sam nabehne bez toho aby som zadal up. Pouzivam PCLinuxOS 64bit LXDE.