diff --git a/openmptcprouter/files/etc/uci-defaults/2000-omr-dhcp b/openmptcprouter/files/etc/uci-defaults/2000-omr-dhcp
index 82d955677..5ad19ac9e 100755
--- a/openmptcprouter/files/etc/uci-defaults/2000-omr-dhcp
+++ b/openmptcprouter/files/etc/uci-defaults/2000-omr-dhcp
@@ -2,8 +2,9 @@
 
 if [ "$(uci -q get openmptcprouter.settings.disable_ipv6)" != "0" ]; then
 	uci -q batch <<-EOF >/dev/null
-		set dhcp.lan.ra_default=1
-		set dhcp.lan.dhcpv6=server
+		delete dhcp.lan.ra_default
+		delete dhcp.lan.dhcpv6
+		delete dhcp.lan.ra
 		set dhcp.lan.force=1
 		commit dhcp
 	EOF