Index: sys/dev/hyperv/netvsc/hv_net_vsc.h
===================================================================
--- sys/dev/hyperv/netvsc/hv_net_vsc.h
+++ sys/dev/hyperv/netvsc/hv_net_vsc.h
@@ -43,9 +43,13 @@
 #include <sys/lock.h>
 #include <sys/malloc.h>
 #include <sys/sx.h>
+
 #include <netinet/in.h>
 #include <netinet/tcp_lro.h>
 
+#include <net/if.h>
+#include <net/if_media.h>
+
 #include <dev/hyperv/include/hyperv.h>
 
 MALLOC_DECLARE(M_NETVSC);
@@ -985,6 +989,7 @@
  */
 typedef struct hn_softc {
 	struct ifnet    *hn_ifp;
+	struct ifmedia	hn_media;
 	device_t        hn_dev;
 	uint8_t         hn_unit;
 	int             hn_carrier;
Index: sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
===================================================================
--- sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
+++ sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
@@ -194,6 +194,8 @@
 static int  hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
 static int  hn_start_locked(struct ifnet *ifp);
 static void hn_start(struct ifnet *ifp);
+static int hn_ifmedia_upd(struct ifnet *ifp);
+static void hn_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
 #ifdef HN_LRO_HIWAT
 static int hn_lro_hiwat_sysctl(SYSCTL_HANDLER_ARGS);
 #endif
@@ -264,6 +266,30 @@
 	return (ret_val);
 }
 
+static int
+hn_ifmedia_upd(struct ifnet *ifp __unused)
+{
+
+	return EOPNOTSUPP;
+}
+
+static void
+hn_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+	struct hn_softc *sc = ifp->if_softc;
+
+	ifmr->ifm_status = IFM_AVALID;
+	ifmr->ifm_active = IFM_ETHER;
+
+	if (!sc->hn_carrier) {
+		ifmr->ifm_active |= IFM_NONE;
+		return;
+	}
+	ifmr->ifm_status |= IFM_ACTIVE;
+	/* NOTE: we could use KVP for this later. */
+	ifmr->ifm_active |= IFM_10G_T | IFM_FDX;
+}
+
 /*
  * NetVsc driver initialization
  * Note:  Filter init is no longer required
@@ -374,6 +400,13 @@
 	ifp->if_snd.ifq_drv_maxlen = 511;
 	IFQ_SET_READY(&ifp->if_snd);
 
+	ifmedia_init(&sc->hn_media, 0, hn_ifmedia_upd, hn_ifmedia_sts);
+	/* NOTE: we could use KVP for this later. */
+	ifmedia_add(&sc->hn_media, IFM_ETHER | IFM_AUTO, 0, NULL);
+	ifmedia_set(&sc->hn_media, IFM_ETHER | IFM_AUTO);
+	/* XXX ifmedia_set really should do this for us */
+	sc->hn_media.ifm_media = sc->hn_media.ifm_cur->ifm_media;
+
 	/*
 	 * Tell upper layers that we support full VLAN capability.
 	 */
@@ -485,6 +518,7 @@
 
 	hv_rf_on_device_remove(hv_device, HV_RF_NV_DESTROY_CHANNEL);
 
+	ifmedia_removeall(&sc->hn_media);
 	tcp_lro_free(&sc->hn_lro);
 
 	return (0);
@@ -1332,10 +1366,11 @@
 			error = 0;
 		}
 #endif
-		/* FALLTHROUGH */
+		error = EINVAL;
+		break;
 	case SIOCSIFMEDIA:
 	case SIOCGIFMEDIA:
-		error = EINVAL;
+		error = ifmedia_ioctl(ifp, ifr, &sc->hn_media, cmd);
 		break;
 	default:
 		error = ether_ioctl(ifp, cmd, data);