diff --git a/openmptcprouter/files/etc/uci-defaults/1920-omr-network b/openmptcprouter/files/etc/uci-defaults/1920-omr-network
index 0f1b7bc14..9e80c2a5d 100755
--- a/openmptcprouter/files/etc/uci-defaults/1920-omr-network
+++ b/openmptcprouter/files/etc/uci-defaults/1920-omr-network
@@ -193,6 +193,10 @@ if [ "$(uci -q get network.vpn0.proto)" = "none" ]; then
 	uci -q delete network.vpn0
 fi
 
+if [ "$(uci -q get network.wan6.proto)" = "dhcpv6" ]; then
+	uci -q delete network.wan6
+fi
+
 config_load network
 config_foreach _setup_multipath_off interface