How do I change my MAC address on GNU/Linux?

Question

I'm trying using macchanger (ip link set wls1 down, macchanger -r wls1 and ip link set wls1 up) but it doesn't work. When I try to connect to my wifi the MAC address is set to the default value... It's strange because whet I put down the interface the Network Manager seems to be still connected to the LAN and I have to disconnect it manually. I've tried disabling the Network Manager and reenabling it after the MAC changing but nothing happened...

Answer 1

Command:

/etc/init.d/networking stop

ifconfig eth0 hw ether 02:01:02:03:04:08

/etc/init.d/networking start

Configuration:

MACADDR=12:34:56:78:90:ab

For detailed information, please refer to this link