. /lib/functions.sh . /lib/functions/system.sh preinit_set_mac_address() { case $(board_name) in zyxel,nbg6716) ethaddr=$(mtd_get_mac_ascii u-boot-env ethaddr) ip link set dev eth0 address $(macaddr_add $ethaddr 2) ip link set dev eth1 address $(macaddr_add $ethaddr 3) ;; esac } boot_hook_add preinit_main preinit_set_mac_address