diff --git a/net/core/dev.c b/net/core/dev.c
index d334446a8eaf..4addaf0df96e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4480,17 +4480,19 @@ static void __net_exit default_device_exit(struct net *net)
 	rtnl_lock();
 	for_each_netdev_safe(net, dev, next) {
 		int err;
+		char fb_name[IFNAMSIZ];
 
 		/* Ignore unmoveable devices (i.e. loopback) */
 		if (dev->features & NETIF_F_NETNS_LOCAL)
 			continue;
 
 		/* Push remaing network devices to init_net */
-		err = dev_change_net_namespace(dev, &init_net, "dev%d");
+		snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+		err = dev_change_net_namespace(dev, &init_net, fb_name);
 		if (err) {
-			printk(KERN_WARNING "%s: failed to move %s to init_net: %d\n",
+			printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
 				__func__, dev->name, err);
-			unregister_netdevice(dev);
+			BUG();
 		}
 	}
 	rtnl_unlock();