1 files changed, 9 insertions, 0 deletions

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index cc8f3e506cde..473447593060 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1155,6 +1155,7 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
 static int fib_netdev_event(struct notifier_block *this, unsigned long event, void *ptr)
 {
         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+        struct netdev_notifier_changeupper_info *info;
         struct in_device *in_dev;
         struct net *net = dev_net(dev);
         unsigned int flags;
@@ -1193,6 +1194,14 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
         case NETDEV_CHANGEMTU:
                 rt_cache_flush(net);
                 break;
+        case NETDEV_CHANGEUPPER:
+                info = ptr;
+                /* flush all routes if dev is linked to or unlinked from
+                 * an L3 master device (e.g., VRF)
+                 */
+                if (info->upper_dev && netif_is_l3_master(info->upper_dev))
+                        fib_disable_ip(dev, NETDEV_DOWN, true);
+                break;
         }
         return NOTIFY_DONE;
 }