diff --git a/openmptcprouter/files/etc/uci-defaults/1940-omr-dns b/openmptcprouter/files/etc/uci-defaults/1940-omr-dns
index f37a86697..51839e783 100755
--- a/openmptcprouter/files/etc/uci-defaults/1940-omr-dns
+++ b/openmptcprouter/files/etc/uci-defaults/1940-omr-dns
@@ -2,6 +2,7 @@
 
 uci -q batch <<-EOF >/dev/null
 	set unbound.@unbound[-1].listen_port=5353
+	set unbound.@unbound[-1].protocol="ip4_only"
 	commit unbound
 	add_list dhcp.@dnsmasq[-1].server="127.0.0.1#5353"
 	commit dhcp