diff --git a/sys/dev/virtio/network/if_vtnet.c b/sys/dev/virtio/network/if_vtnet.c
--- a/sys/dev/virtio/network/if_vtnet.c
+++ b/sys/dev/virtio/network/if_vtnet.c
@@ -668,6 +668,12 @@
 		sc->vtnet_flags |= VTNET_FLAG_MAC;
 	}
 
+	if (virtio_with_feature(dev, VIRTIO_NET_F_MTU)) {
+		sc->vtnet_max_mtu = virtio_read_dev_config_2(dev,
+		    offsetof(struct virtio_net_config, mtu));
+	} else
+		sc->vtnet_max_mtu = VTNET_MAX_MTU;
+
 	if (virtio_with_feature(dev, VIRTIO_NET_F_MRG_RXBUF)) {
 		sc->vtnet_flags |= VTNET_FLAG_MRG_RXBUFS;
 		sc->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
@@ -1094,10 +1100,9 @@
 		return (MCLBYTES);
 
 	/*
-	 * Try to scale the receive mbuf cluster size from the MTU. Without
-	 * the GUEST_TSO[46] features, the VirtIO specification says the
-	 * driver must only be able to receive ~1500 byte frames. But if
-	 * jumbo frames can be transmitted then try to receive jumbo.
+	 * Try to scale the receive mbuf cluster size from the MTU. We
+	 * could also use the VQ size to influence the selected size,
+	 * but that would only matter for very small queues.
 	 */
 	if (vtnet_modern(sc)) {
 		MPASS(sc->vtnet_hdr_size == sizeof(struct virtio_net_hdr_v1));
@@ -1128,7 +1133,7 @@
 
 	if (ifp->if_mtu == mtu)
 		return (0);
-	else if (mtu < ETHERMIN || mtu > VTNET_MAX_MTU)
+	else if (mtu < ETHERMIN || mtu > sc->vtnet_max_mtu)
 		return (EINVAL);
 
 	ifp->if_mtu = mtu;
diff --git a/sys/dev/virtio/network/if_vtnetvar.h b/sys/dev/virtio/network/if_vtnetvar.h
--- a/sys/dev/virtio/network/if_vtnetvar.h
+++ b/sys/dev/virtio/network/if_vtnetvar.h
@@ -164,6 +164,7 @@
 	int			 vtnet_tx_intr_thresh;
 	int			 vtnet_tx_nsegs;
 	int			 vtnet_if_flags;
+	int			 vtnet_max_mtu;
 	int			 vtnet_act_vq_pairs;
 	int			 vtnet_max_vq_pairs;
 	int			 vtnet_requested_vq_pairs;
@@ -297,6 +298,7 @@
 #define VTNET_COMMON_FEATURES \
     (VIRTIO_NET_F_MAC			| \
      VIRTIO_NET_F_STATUS		| \
+     VIRTIO_NET_F_MTU			| \
      VIRTIO_NET_F_CTRL_VQ		| \
      VIRTIO_NET_F_CTRL_RX		| \
      VIRTIO_NET_F_CTRL_MAC_ADDR		| \