Index: ip_carp.c
===================================================================
RCS file: /cvs/src/sys/netinet/ip_carp.c,v
retrieving revision 1.289
diff -u -p -r1.289 ip_carp.c
--- ip_carp.c	18 May 2016 03:46:03 -0000	1.289
+++ ip_carp.c	19 May 2016 12:15:02 -0000
@@ -1399,6 +1399,9 @@ carp_input(struct ifnet *ifp0, struct mb
 	struct carp_softc *sc;
 	struct srp_ref sr;
 
+	if (ISSET(m->m_flags, M_VLANTAG))
+		return (0);
+
 	eh = mtod(m, struct ether_header *);
 	cif = (struct carp_if *)cookie;
 	KASSERT(cif == (struct carp_if *)ifp0->if_carp);