backtrack3
ifconfig rausb0 down macchanger --mac 01:02:03:04:05:06 rausb0 ifconfig rausb0 up
backtrack4
airmon-ng airmon-ng start wlan0 11 (starts as mon0 device in monitor mode) ifconfig mon0 down macchanger -a mon0 (or ) macchanger -r mon0 (or ) macchanger --mac 01:02:03:04:05:06 mon0 ifconfig mon0 up airmon-ng start mon0 11
If you get error: can't change mac; interface up or not permission device or resource busy
then you should try another mac address. My card
does not work with ALL user defined mac addresses.
Use -r or -a option.
In backtrack 3 there is no problem.
