Index: sys/netinet6/nd6.c
===================================================================
--- sys/netinet6/nd6.c
+++ sys/netinet6/nd6.c
@@ -2460,6 +2460,7 @@
 	while (m_head) {
 		m = m_head;
 		m_head = m_head->m_nextpkt;
+		m->m_nextpkt = NULL;
 		error = nd6_output_ifp(ifp, ifp, m, dst, NULL);
 	}