- MACADDR=12:34:56:78:90:AB
- hwaddress ether 12:34:56:78:90:AB
- ifconfig eth0 down hw ether 12:34:56:78:90:AB
- ifconfig eth0 up
- ip link set eth0 down
- ip link set eth0 address 12:34:56:78:90:AB
- ip link set eth0 up
- echo "1" > /proc/sys/net/ipv4/ip_forward
With great power comes great responsibility.