OpenWrt – change WAN mac address without Luci
sleep 5
ifconfig eth0.2 down
sleep 5
ifconfig eth0.2 hw ether 74:4D:28:86:1F:1B
sleep 5
ifconfig eth0.2 upsleep 5
ifconfig eth0.2 down
sleep 5
ifconfig eth0.2 hw ether 74:4D:28:86:1F:1B
sleep 5
ifconfig eth0.2 up