1 files changed, 9 insertions, 0 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 309997edc8a5..d519a6a66726 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1075,6 +1075,14 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
                         }
                 }
                 ip_mc_up(in_dev);
+                /* fall through */
+        case NETDEV_CHANGEADDR:
+                if (IN_DEV_ARP_NOTIFY(in_dev))
+                        arp_send(ARPOP_REQUEST, ETH_P_ARP,
+                                 in_dev->ifa_list->ifa_address,
+                                 dev,
+                                 in_dev->ifa_list->ifa_address,
+                                 NULL, dev->dev_addr, NULL);
                 break;
         case NETDEV_DOWN:
                 ip_mc_down(in_dev);
@@ -1439,6 +1447,7 @@ static struct devinet_sysctl_table {
                 DEVINET_SYSCTL_RW_ENTRY(ARP_ANNOUNCE, "arp_announce"),
                 DEVINET_SYSCTL_RW_ENTRY(ARP_IGNORE, "arp_ignore"),
                 DEVINET_SYSCTL_RW_ENTRY(ARP_ACCEPT, "arp_accept"),
+                DEVINET_SYSCTL_RW_ENTRY(ARP_NOTIFY, "arp_notify"),
 
                 DEVINET_SYSCTL_FLUSHING_ENTRY(NOXFRM, "disable_xfrm"),
                 DEVINET_SYSCTL_FLUSHING_ENTRY(NOPOLICY, "disable_policy"),