Mine

Index: target/linux/ar71xx/base-files/etc/preinit.arch===================================================================--- target/linux/ar71xx/base-files/etc/preinit.arch	(revision 17100)+++ target/linux/ar71xx/base-files/etc/preinit.arch	(working copy)@@ -4,21 +4,27 @@  . /lib/ar71xx.sh -tew632brp_init_mac_address() {+fetch_mac_from_mtd() {+	local mtd_part=$1+	local lan_env=$2+	local wan_env=$3 	local mtd mac -	mtd=$(grep config /proc/mtd | cut -d: -f1)+	mtd=$(grep $mtd_part /proc/mtd | cut -d: -f1) 	[ -z $mtd ] && return -	mac=$(grep lan_mac /dev/$mtd | cut -d= -f2)+	mac=$(grep $lan_env /dev/$mtd | cut -d= -f2) 	[ ! -z $mac ] && ifconfig eth0 hw ether $mac 2>/dev/null -	mac=$(grep wan_mac /dev/$mtd | cut -d= -f2)+	mac=$(grep $wan_env /dev/$mtd | cut -d= -f2) 	[ ! -z $mac ] && ifconfig eth1 hw ether $mac 2>/dev/null }  case $(ar71xx_board_name) in 	tew-632brp)-		tew632brp_init_mac_address+		fetch_mac_from_mtd config lan_mac wan_mac 		;;+	wrt160nl | wrt400n)+		fetch_mac_from_mtd nvram lan_hwaddr wan_hwaddr+		;; esac