From ff4ca8273eafbba875a86d333e059e78f292107f Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 7 Aug 2007 18:11:26 -0700
Subject: [PATCH] [NETFILTER]: ctnetlink: return EEXIST instead of EINVAL for
 existing nat'ed conntracks

ctnetlink must return EEXIST for existing nat'ed conntracks instead of
EINVAL. Only return EINVAL if we try to update a conntrack with NAT
handlings (that is not allowed).

Decadence:libnetfilter_conntrack/utils# ./conntrack_create_nat
TEST: create conntrack (0)(Success)
Decadence:libnetfilter_conntrack/utils# ./conntrack_create_nat
TEST: create conntrack (-1)(Invalid argument)

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed