--- zzzz-none-000/linux-3.10.107/net/ipv6/addrconf.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/net/ipv6/addrconf.c	2021-11-10 11:53:56.000000000 +0000
@@ -38,6 +38,12 @@
  *						status etc.
  */
 
+/**
+ * Some part of this file is modified by Ikanos Communications. 
+ *
+ * Copyright (C) 2013-2014 Ikanos Communications.
+ */ 
+ 
 #define pr_fmt(fmt) "IPv6: " fmt
 
 #include <linux/errno.h>
@@ -5323,3 +5329,31 @@
 
 	destroy_workqueue(addrconf_wq);
 }
+
+
+#if defined(CONFIG_MACH_FUSIV)
+/* 
+ *    Get net device if v6 address is configured on any interface 
+ */
+struct net_device  *ipv6_dev_find(struct net *net, struct in6_addr *addr)
+{
+        struct net_device       *dev = NULL;
+        struct inet6_ifaddr * ifp;
+        struct hlist_node *node;
+        u32 hash = inet6_addr_hash(addr);
+        rcu_read_lock_bh();
+        hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) { //Modified for 3.10.28
+                if (!net_eq(dev_net(ifp->idev->dev), net))
+                        continue;
+                if (ipv6_addr_equal(&ifp->addr, addr)) {
+                        dev = ifp->idev->dev;
+                        break;
+                }
+              
+        }
+        rcu_read_unlock_bh();
+        return dev;
+}
+EXPORT_SYMBOL(ipv6_dev_find);
+#endif
+