diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 589f0ca..94622e5 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -874,6 +874,8 @@
 
 	dev = __dev_get_by_name(net, ifr->ifr_name);
 	if (dev) {
+		if (ifr->ifr_flags & IFF_TUN_EXCL)
+			return -EBUSY;
 		if ((ifr->ifr_flags & IFF_TUN) && dev->netdev_ops == &tun_netdev_ops)
 			tun = netdev_priv(dev);
 		else if ((ifr->ifr_flags & IFF_TAP) && dev->netdev_ops == &tap_netdev_ops)