diff --git a/sys/dev/virtual/vkernel/net/if_vke.c b/sys/dev/virtual/vkernel/net/if_vke.c
index c09b36d..5a35073 100644
--- a/sys/dev/virtual/vkernel/net/if_vke.c
+++ b/sys/dev/virtual/vkernel/net/if_vke.c
@@ -66,7 +66,7 @@
 
 #define VKE_CHUNK	8 /* number of mbufs to queue before interrupting */
 
-#define NETFIFOSIZE	256
+#define NETFIFOSIZE	((int)(nmbclusters * 0.50) / NetifNum)
 #define NETFIFOMASK	(NETFIFOSIZE -1)
 #define NETFIFOINDEX(u) ((u) & NETFIFOMASK)
 
@@ -75,7 +75,7 @@
 #define VKE_COTD_DEAD	2
 
 struct vke_fifo {
-	struct mbuf	*array[NETFIFOSIZE];
+	struct mbuf	**array;
 	int		rindex;
 	int		windex;
 };
@@ -278,6 +278,7 @@ vke_init(void *xsc)
 {
 	struct vke_softc *sc = xsc;
 	struct ifnet *ifp = &sc->arpcom.ac_if;
+	size_t mbufptrs = NETFIFOSIZE * sizeof(struct mbuf *);
 	int i;
 
 	ASSERT_SERIALIZED(ifp->if_serializer);
@@ -287,10 +288,18 @@ vke_init(void *xsc)
 	ifp->if_flags |= IFF_RUNNING;
 	ifsq_clr_oactive(ifq_get_subq_default(&ifp->if_snd));
 
+	/*
+	 * Allocate memory for FIFO structures and mbufs.
+	 * NETFIFOSIZE is adjusted to use just 50% of the total mbuf
+	 * clusters for all the active interfaces.
+	 */
 	sc->sc_txfifo = kmalloc(sizeof(*sc->sc_txfifo), M_DEVBUF, M_WAITOK);
 	sc->sc_txfifo_done = kmalloc(sizeof(*sc->sc_txfifo_done), M_DEVBUF, M_WAITOK);
-
 	sc->sc_rxfifo = kmalloc(sizeof(*sc->sc_rxfifo), M_DEVBUF, M_WAITOK);
+	sc->sc_txfifo->array = kmalloc(mbufptrs, M_DEVBUF, M_WAITOK | M_ZERO);
+	sc->sc_txfifo_done->array = kmalloc(mbufptrs, M_DEVBUF, M_WAITOK | M_ZERO);
+	sc->sc_rxfifo->array = kmalloc(mbufptrs, M_DEVBUF, M_WAITOK | M_ZERO);
+
 	for (i = 0; i < NETFIFOSIZE; i++) {
 		sc->sc_rxfifo->array[i] = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 		sc->sc_txfifo->array[i] = NULL;
@@ -459,16 +468,22 @@ vke_stop(struct vke_softc *sc)
 		}
 
 		if (sc->sc_txfifo) {
+			if (sc->sc_txfifo->array)
+				kfree(sc->sc_txfifo->array, M_DEVBUF);
 			kfree(sc->sc_txfifo, M_DEVBUF);
 			sc->sc_txfifo = NULL;
 		}
 
 		if (sc->sc_txfifo_done) {
+			if (sc->sc_txfifo_done->array)
+				kfree(sc->sc_txfifo_done->array, M_DEVBUF);
 			kfree(sc->sc_txfifo_done, M_DEVBUF);
 			sc->sc_txfifo_done = NULL;
 		}
 
 		if (sc->sc_rxfifo) {
+			if (sc->sc_rxfifo->array)
+				kfree(sc->sc_rxfifo->array, M_DEVBUF);
 			kfree(sc->sc_rxfifo, M_DEVBUF);
 			sc->sc_rxfifo = NULL;
 		}