diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 29b8ee4..ddeae82 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -36,6 +36,9 @@
 #include <linux/string.h>
 #include <linux/log2.h>
 
+#include <linux/inetdevice.h>
+#include <net/arp.h>
+
 #define NEIGH_DEBUG 1
 
 #define NEIGH_PRINTK(x...) printk(x)
@@ -228,9 +231,26 @@ static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev)
 
 void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev)
 {
+	struct in_device *in_dev;
 	write_lock_bh(&tbl->lock);
 	neigh_flush_dev(tbl, dev);
 	write_unlock_bh(&tbl->lock);
+	 
+	/* Send a gratuitous ARP to the neighbours to update their arp tables */
+	
+	rcu_read_lock();
+	in_dev = __in_dev_get_rcu(dev);
+	if (in_dev == NULL)
+		goto out;
+	if (in_dev->ifa_list)
+		
+	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);
+out:
+	rcu_read_unlock();
 }
 
 int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)