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netfilter: don't attach a nat extension by default

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nowadays the NAT extension only stores the interface index
(used to purge connections that got masqueraded when interface goes down)
and pptp nat information.

Previous patches moved nf_ct_nat_ext_add to those places that need it.

Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
This commit is contained in:
Florian Westphal 2017-04-20 10:11:35 +02:00 • committed by Pablo Neira Ayuso
commit 9a08ecfe74
4 changed files with 3 additions and 13 deletions
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4
net/ipv6/netfilter/nf_nat_l3proto_ipv6.c
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@ -273,9 +273,7 @@ nf_nat_ipv6_fn(void *priv, struct sk_buff *skb,
if (!ct)
return NF_ACCEPT;
nat = nf_ct_nat_ext_add(ct);
if (nat == NULL)
return NF_ACCEPT;
nat = nfct_nat(ct);
switch (ctinfo) {
case IP_CT_RELATED: