1 files changed, 19 insertions, 0 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 71c3dacec1ed..f9fcf690bd5d 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -2249,6 +2249,25 @@ static void igmp6_timer_handler(unsigned long data)
         ma_put(ma);
 }
 
+/* Device changing type */
+
+void ipv6_mc_unmap(struct inet6_dev *idev)
+{
+        struct ifmcaddr6 *i;
+
+        /* Install multicast list, except for all-nodes (already installed) */
+
+        read_lock_bh(&idev->lock);
+        for (i = idev->mc_list; i; i = i->next)
+                igmp6_group_dropped(i);
+        read_unlock_bh(&idev->lock);
+}
+
+void ipv6_mc_remap(struct inet6_dev *idev)
+{
+        ipv6_mc_up(idev);
+}
+
 /* Device going down */
 
 void ipv6_mc_down(struct inet6_dev *idev)