netfilter: netns nf_conntrack: SIP conntracking in netns

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NPatrick McHardy <kaber@trash.net>

net/netfilter/nf_conntrack_sip.c

@@ -736,6 +736,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb,
 	struct nf_conntrack_expect *exp, *rtp_exp, *rtcp_exp;
 	enum ip_conntrack_info ctinfo;
 	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+	struct net *net = nf_ct_net(ct);
 	enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 	union nf_inet_addr *saddr;
 	struct nf_conntrack_tuple tuple;
@@ -775,7 +776,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb,
 
 	rcu_read_lock();
 	do {
-		exp = __nf_ct_expect_find(&init_net, &tuple);
+		exp = __nf_ct_expect_find(net, &tuple);
 
 		if (!exp || exp->master == ct ||
 		    nfct_help(exp->master)->helper != nfct_help(ct)->helper ||