Merge tag 'ipvs-fixes2-for-v4.7' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs

Simon Horman says:

====================
Second Round of IPVS Fixes for v4.7

The fix from Quentin Armitage allows the backup sync daemon to
be bound to a link-local mcast IPv6 address as is already the case
for IPv4.
====================

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 803001a45aa1..1b07578bedf3 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1545,7 +1545,8 @@ error:
 /*
  *      Set up receiving multicast socket over UDP
  */
-static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id)
+static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id,
+                                        int ifindex)
 {
         /* multicast addr */
         union ipvs_sockaddr mcast_addr;
@@ -1566,6 +1567,7 @@ static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id)
                 set_sock_size(sock->sk, 0, result);
 
         get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->bcfg, id);
+        sock->sk->sk_bound_dev_if = ifindex;
         result = sock->ops->bind(sock, (struct sockaddr *)&mcast_addr, salen);
         if (result < 0) {
                 pr_err("Error binding to the multicast addr\n");
@@ -1868,7 +1870,7 @@ int start_sync_thread(struct netns_ipvs *ipvs, struct ipvs_sync_daemon_cfg *c,
                 if (state == IP_VS_STATE_MASTER)
                         sock = make_send_sock(ipvs, id);
                 else
-                        sock = make_receive_sock(ipvs, id);
+                        sock = make_receive_sock(ipvs, id, dev->ifindex);
                 if (IS_ERR(sock)) {
                         result = PTR_ERR(sock);
                         goto outtinfo;