ipv6: addrconf: fix generation of new temporary addresses

[mirror_ubuntu-zesty-kernel.git] / net / ipv6 / addrconf.c

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f60e88e56255297e662ffc2e028f543d09271f74..a7bcc0ab5e99543a08410abe6ff3dbfc9b3753b7 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3386,9 +3386,15 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
                        }
 
                        if (idev) {
-                               if (idev->if_flags & IF_READY)
-                                       /* device is already configured. */
+                               if (idev->if_flags & IF_READY) {
+                                       /* device is already configured -
+                                        * but resend MLD reports, we might
+                                        * have roamed and need to update
+                                        * multicast snooping switches
+                                        */
+                                       ipv6_mc_up(idev);
                                        break;
+                               }
                                idev->if_flags |= IF_READY;
                        }
 
@@ -4009,6 +4015,12 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id)
 
        if (bump_id)
                rt_genid_bump_ipv6(dev_net(dev));
+
+       /* Make sure that a new temporary address will be created
+        * before this temporary address becomes deprecated.
+        */
+       if (ifp->flags & IFA_F_TEMPORARY)
+               addrconf_verify_rtnl();
 }
 
 static void addrconf_dad_run(struct inet6_dev *idev)