diff --git a/target/linux/lantiq/base-files/etc/board.d/02_network b/target/linux/lantiq/base-files/etc/board.d/02_network
index 8fc0835bdb..15b1f8c10f 100755
--- a/target/linux/lantiq/base-files/etc/board.d/02_network
+++ b/target/linux/lantiq/base-files/etc/board.d/02_network
@@ -16,6 +16,7 @@ encaps="llc"
 payload="bridged"
 lan_mac=""
 wan_mac=""
+interface_wan=""
 
 board=$(lantiq_board_name)
 
@@ -132,15 +133,18 @@ esac
 
 if [ -n "$(ls /lib/modules/`uname -r`/ltq_atm*)" ]; then
 	ucidef_add_atm_bridge "$vpi" "$vci" "$encaps" "$payload"
-	ucidef_set_interface_wan "nas0" "pppoe"
 fi
 
 if [ -n "$(grep "system type.*: VR9" /proc/cpuinfo)" ]; then
+	interface_wan="ptm0"
 	ucidef_add_vdsl_modem "$annex" "/lib/firmware/vdsl.bin" "av" "ptm"
 else
+	interface_wan="nas0"
 	ucidef_add_adsl_modem "$annex" "/lib/firmware/adsl.bin"
 fi
 
+ucidef_set_interface_wan "$interface_wan" "pppoe"
+
 [ -n "$lan_mac" ] && ucidef_set_interface_macaddr lan "$lan_mac"
 [ -n "$wan_mac" ] && ucidef_set_interface_macaddr wan "$wan_mac"