diff --git a/sbin/ifconfig/ifconfig.c b/sbin/ifconfig/ifconfig.c
index e4292da86d6a..7c5d3519f224 100644
--- a/sbin/ifconfig/ifconfig.c
+++ b/sbin/ifconfig/ifconfig.c
@@ -295,8 +295,6 @@ main(int argc, char *argv[])
 			sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
 		else
 			sdl = NULL;
-		if (sdl != NULL && sdl->sdl_type == IFT_USB)
-			continue;
 		if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
 			continue;
 		iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
@@ -307,6 +305,8 @@ main(int argc, char *argv[])
 		}
 		cp = ifa->ifa_name;
 
+		if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
+			continue;
 		if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
 			continue;
 		if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
diff --git a/sys/dev/usb/usb_pf.c b/sys/dev/usb/usb_pf.c
index 4ac0eeb014cc..2658907f4f88 100644
--- a/sys/dev/usb/usb_pf.c
+++ b/sys/dev/usb/usb_pf.c
@@ -64,6 +64,7 @@ usbpf_attach(struct usb_bus *ubus)
 
 	ifp = ubus->ifp = if_alloc(IFT_USB);
 	if_initname(ifp, "usbus", device_get_unit(ubus->bdev));
+	ifp->if_flags = IFF_CANTCONFIG;
 	if_attach(ifp);
 	if_up(ifp);
 
diff --git a/sys/net/if.h b/sys/net/if.h
index a99b4a7c8ad6..8cfa4481a677 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -145,7 +145,7 @@ struct if_data {
 #define	IFF_LINK2	0x4000		/* per link layer defined bit */
 #define	IFF_ALTPHYS	IFF_LINK2	/* use alternate physical connection */
 #define	IFF_MULTICAST	0x8000		/* (i) supports multicast */
-/*			0x10000		*/
+#define	IFF_CANTCONFIG	0x10000		/* (i) unconfigurable using ioctl(2) */
 #define	IFF_PPROMISC	0x20000		/* (n) user-requested promisc mode */
 #define	IFF_MONITOR	0x40000		/* (n) user-requested monitor mode */
 #define	IFF_STATICARP	0x80000		/* (n) static ARP */