--- /dev/null
+From 83eaddab4378db256d00d295bda6ca997cd13a52 Mon Sep 17 00:00:00 2001
+From: WANG Cong <xiyou.wangcong@gmail.com>
+Date: Tue, 9 May 2017 16:59:54 -0700
+Subject: ipv6/dccp: do not inherit ipv6_mc_list from parent
+
+From: WANG Cong <xiyou.wangcong@gmail.com>
+
+commit 83eaddab4378db256d00d295bda6ca997cd13a52 upstream.
+
+Like commit 657831ffc38e ("dccp/tcp: do not inherit mc_list from parent")
+we should clear ipv6_mc_list etc. for IPv6 sockets too.
+
+Cc: Eric Dumazet <edumazet@google.com>
+Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
+Acked-by: Eric Dumazet <edumazet@google.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Connor O'Brien <connoro@google.com>
+[AmitP: cherry-picked this backported commit from android-3.18]
+Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/dccp/ipv6.c | 7 +++++++
+ net/ipv6/tcp_ipv6.c | 2 ++
+ 2 files changed, 9 insertions(+)
+
+--- a/net/dccp/ipv6.c
++++ b/net/dccp/ipv6.c
+@@ -487,6 +487,9 @@ static struct sock *dccp_v6_request_recv
+ newsk->sk_backlog_rcv = dccp_v4_do_rcv;
+ newnp->pktoptions = NULL;
+ newnp->opt = NULL;
++ newnp->ipv6_mc_list = NULL;
++ newnp->ipv6_ac_list = NULL;
++ newnp->ipv6_fl_list = NULL;
+ newnp->mcast_oif = inet6_iif(skb);
+ newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
+
+@@ -562,6 +565,10 @@ static struct sock *dccp_v6_request_recv
+ /* Clone RX bits */
+ newnp->rxopt.all = np->rxopt.all;
+
++ newnp->ipv6_mc_list = NULL;
++ newnp->ipv6_ac_list = NULL;
++ newnp->ipv6_fl_list = NULL;
++
+ /* Clone pktoptions received with SYN */
+ newnp->pktoptions = NULL;
+ if (ireq->pktopts != NULL) {
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -1113,6 +1113,7 @@ static struct sock *tcp_v6_syn_recv_sock
+ newtp->af_specific = &tcp_sock_ipv6_mapped_specific;
+ #endif
+
++ newnp->ipv6_mc_list = NULL;
+ newnp->ipv6_ac_list = NULL;
+ newnp->ipv6_fl_list = NULL;
+ newnp->pktoptions = NULL;
+@@ -1184,6 +1185,7 @@ static struct sock *tcp_v6_syn_recv_sock
+ First: no IPv4 options.
+ */
+ newinet->inet_opt = NULL;
++ newnp->ipv6_mc_list = NULL;
+ newnp->ipv6_ac_list = NULL;
+ newnp->ipv6_fl_list = NULL;
+