diff --git a/openwrt/package/iptables/files/firewall.awk b/openwrt/package/iptables/files/firewall.awk
index 1b63f83862..1a201a0bce 100644
--- a/openwrt/package/iptables/files/firewall.awk
+++ b/openwrt/package/iptables/files/firewall.awk
@@ -1,4 +1,5 @@
 BEGIN {
+	print ". /etc/config/network"
 	print "proto=\"$wan_proto\""
 	print "[ -z \"$proto\" -o \"$proto\" = \"none\" ] && exit"
 	print "ifname=\"$wan_ifname\""