diff --git a/sys/netinet6/frag6.c b/sys/netinet6/frag6.c
index b3200db8ae9..7bb2e0d1d4a 100644
--- a/sys/netinet6/frag6.c
+++ b/sys/netinet6/frag6.c
@@ -688,6 +688,10 @@ frag6_slowtimo()
 {
 	struct ip6q *q6;
 
+#if 0
+	GIANT_REQUIRED;	/* XXX bz: ip6_forward_rt */
+#endif
+
 	IP6Q_LOCK();
 	q6 = ip6q.ip6q_next;
 	if (q6)
diff --git a/sys/netinet6/ip6_forward.c b/sys/netinet6/ip6_forward.c
index 3b542cf6845..18f03122d82 100644
--- a/sys/netinet6/ip6_forward.c
+++ b/sys/netinet6/ip6_forward.c
@@ -120,6 +120,8 @@ ip6_forward(m, srcrt)
 	int ipsecrt = 0;
 #endif
 
+	GIANT_REQUIRED; /* XXX bz: ip6_forward_rt */
+
 #ifdef IPSEC
 	/*
 	 * Check AH/ESP integrity.