1 files changed, 0 insertions, 23 deletions

diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c
index a4f1c3479e23..cf95469ab9f1 100644
--- a/net/ipv4/netfilter/nf_nat_rule.c
+++ b/net/ipv4/netfilter/nf_nat_rule.c
@@ -86,24 +86,6 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par)
         return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_SRC);
 }
 
-/* Before 2.6.11 we did implicit source NAT if required. Warn about change. */
-static void warn_if_extra_mangle(struct net *net, __be32 dstip, __be32 srcip)
-{
-        static int warned = 0;
-        struct flowi fl = { .nl_u = { .ip4_u = { .daddr = dstip } } };
-        struct rtable *rt;
-
-        if (ip_route_output_key(net, &rt, &fl) != 0)
-                return;
-
-        if (rt->rt_src != srcip && !warned) {
-                printk("NAT: no longer support implicit source local NAT\n");
-                printk("NAT: packet src %pI4 -> dst %pI4\n", &srcip, &dstip);
-                warned = 1;
-        }
-        ip_rt_put(rt);
-}
-
 static unsigned int
 ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
 {
@@ -119,11 +101,6 @@ ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
         /* Connection must be valid and new. */
         NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
 
-        if (par->hooknum == NF_INET_LOCAL_OUT &&
-            mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
-                warn_if_extra_mangle(dev_net(par->out), ip_hdr(skb)->daddr,
-                                     mr->range[0].min_ip);
-
         return nf_nat_setup_info(ct, &mr->range[0], IP_NAT_MANIP_DST);
 }