diff --git a/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall b/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
index 4267b2265..8d5a36267 100755
--- a/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
+++ b/openmptcprouter/files/etc/uci-defaults/1980-omr-firewall
@@ -70,6 +70,15 @@ if [ "$(uci -q show firewall | grep ICMPv6-Lan-to-OMR)" = "" ]; then
 		commit firewall
 	EOF
 fi
+uci -q batch <<-EOF >/dev/null
+	del_list firewall.wan.masq_dest='!10.0.0.0/8'
+	del_list firewall.wan.masq_dest='!172.16.0.0/12'
+	del_list firewall.wan.masq_dest='!192.168.0.0/16'
+	add_list firewall.wan.masq_dest='!10.0.0.0/8'
+	add_list firewall.wan.masq_dest='!172.16.0.0/12'
+	add_list firewall.wan.masq_dest='!192.168.0.0/16'
+EOF
+
 rm -f /tmp/luci-indexcache
 
 exit 0