Change MAC address in Linux

You could change the MAC hardware address using following commands:

# ifconfig eth0 down

Here eth0 denotes the Network Adapter whose MAC address you want to change.

# ifconfig eth0 hw ether 00:80:48:BA:d1:20

Here the serial number after ether is the MAC address you desired.

However, in FreeBSD the proper command should be: (instead of above)

# ifconfig em0 link 00:80:48:BA:d1:20

# ifconfig eth0 up
# ifconfig eth0 |grep HWaddr

Done! Check the Results!