diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
--- a/sys/netinet6/nd6.c
+++ b/sys/netinet6/nd6.c
@@ -1614,8 +1614,7 @@
 	struct nhop_object *nh;
 
 	nh = rc->rc_nh_old;
-
-	if ((nh != NULL) && (nh->nh_flags & NHF_DEFAULT)) {
+	if (rc->rc_cmd == RTM_DELETE && (nh->nh_flags & NHF_DEFAULT) != 0) {
 		dr = defrouter_lookup(&nh->gw6_sa.sin6_addr, nh->nh_ifp);
 		if (dr != NULL) {
 			dr->installed = 0;
@@ -1627,9 +1626,10 @@
 void
 nd6_subscription_cb(struct rib_head *rnh, struct rib_cmd_info *rc, void *arg)
 {
-
 #ifdef ROUTE_MPATH
 	rib_decompose_notification(rc, check_release_defrouter, NULL);
+	if (rc->rc_cmd == RTM_DELETE && !NH_IS_NHGRP(rc->rc_nh_old))
+		check_release_defrouter(rc, NULL);
 #else
 	check_release_defrouter(rc, NULL);
 #endif