[ -n "$lan_mac" ] && ucidef_set_interface_macaddr lan "$lan_mac"
[ -n "$wan_mac" ] && ucidef_set_interface_macaddr wan "$wan_mac"
[ -n "$lan_mac" ] && ucidef_set_interface_macaddr lan "$lan_mac"
[ -n "$wan_mac" ] && ucidef_set_interface_macaddr wan "$wan_mac"