1 files changed, 17 insertions, 5 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 2306d56fbb5e..31568b2068ac 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4909,9 +4909,6 @@ static int __init net_dev_init(void)
         if (register_pernet_subsys(&netdev_net_ops))
                 goto out;
 
-        if (register_pernet_device(&default_device_ops))
-                goto out;
-
         /*
          *      Initialise the packet receive queues.
          */
@@ -4928,10 +4925,25 @@ static int __init net_dev_init(void)
                 queue->backlog.weight = weight_p;
         }
 
-        netdev_dma_register();
-
         dev_boot_phase = 0;
 
+        /* The loopback device is special if any other network devices
+         * is present in a network namespace the loopback device must
+         * be present. Since we now dynamically allocate and free the
+         * loopback device ensure this invariant is maintained by
+         * keeping the loopback device as the first device on the
+         * list of network devices.  Ensuring the loopback devices
+         * is the first device that appears and the last network device
+         * that disappears.
+         */
+        if (register_pernet_device(&loopback_net_ops))
+                goto out;
+
+        if (register_pernet_device(&default_device_ops))
+                goto out;
+
+        netdev_dma_register();
+
         open_softirq(NET_TX_SOFTIRQ, net_tx_action);
         open_softirq(NET_RX_SOFTIRQ, net_rx_action);