diff --git a/sys/dev/usb/net/usb_ethernet.h b/sys/dev/usb/net/usb_ethernet.h
--- a/sys/dev/usb/net/usb_ethernet.h
+++ b/sys/dev/usb/net/usb_ethernet.h
@@ -81,6 +81,8 @@
 	struct usb_device	*ue_udev; /* used by uether_do_request() */
 	device_t		ue_dev;
 	device_t		ue_miibus;
+	struct cv		ioctl_cv;
+	int			pending_ioctl;
 
 	struct usb_process	ue_tq;
 	struct sysctl_ctx_list	ue_sysctl_ctx;
diff --git a/sys/dev/usb/net/usb_ethernet.c b/sys/dev/usb/net/usb_ethernet.c
--- a/sys/dev/usb/net/usb_ethernet.c
+++ b/sys/dev/usb/net/usb_ethernet.c
@@ -175,6 +175,9 @@
 		goto error;
 	}
 
+	ue->pending_ioctl = 0;
+	cv_init(&ue->ioctl_cv, "uether_ioctl_cv");
+
 	/* fork rest of the attach code */
 	UE_LOCK(ue);
 	ue_queue_command(ue, ue_attach_post_task,
@@ -319,6 +322,8 @@
 		bus_generic_detach(ue->ue_dev);
 		bus_topo_unlock();
 
+		cv_destroy(&ue->ioctl_cv);
+
 		/* free interface instance */
 		if_free(ifp);
 
@@ -535,8 +540,27 @@
 	case SIOCGIFMEDIA:
 	case SIOCSIFMEDIA:
 		if (ue->ue_miibus != NULL) {
+			UE_LOCK(ue);
+			/* There are pending ioctl */
+			if (ue->pending_ioctl)
+				cv_wait(&ue->ioctl_cv, ue->ue_mtx);
+			/* No pending ioctl, stop ue_tick to avoid race condition */
+			else if (ue->ue_methods->ue_tick != NULL)
+				usb_callout_stop(&ue->ue_watchdog);
+			ue->pending_ioctl++;
+			UE_UNLOCK(ue);
+
 			mii = device_get_softc(ue->ue_miibus);
 			error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
+
+			UE_LOCK(ue);
+			ue->pending_ioctl--;
+			/* We are the last ioctl running, restore back the watchdog */
+			if (ue->pending_ioctl == 0 && ue->ue_methods->ue_tick != NULL)
+				usb_callout_reset(&ue->ue_watchdog, hz, ue_watchdog, ue);
+			/* unblock one ioctl waiter */
+			cv_signal(&ue->ioctl_cv);
+			UE_UNLOCK(ue);
 		} else
 			error = ether_ioctl(ifp, command, data);
 		break;