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[NETFILTER]: nf_nat_sip: only perform RTP DNAT if SIP session was SNATed 

DNAT of the the RTP session is only necessary if the SIP session has
been SNATed.

Signed-off-by: Jerome Borsboom <j.borsboom@erasmusmc.nl>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jerome Borsboom 2007-07-07 22:19:48 -07:00 committed by David S. Miller
parent 7c4e36bc17
commit f4a607bfae
1 changed files with 5 additions and 1 deletions
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6
net/ipv4/netfilter/nf_nat_sip.c
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@ -260,7 +260,11 @@ static unsigned int ip_nat_sdp(struct sk_buff **pskb,
DEBUGP("ip_nat_sdp():\n");
/* Connection will come from reply */
newip = ct->tuplehash[!dir].tuple.dst.u3.ip;
if (ct->tuplehash[dir].tuple.src.u3.ip ==
ct->tuplehash[!dir].tuple.dst.u3.ip)
newip = exp->tuple.dst.u3.ip;
else
newip = ct->tuplehash[!dir].tuple.dst.u3.ip;
exp->saved_ip = exp->tuple.dst.u3.ip;
exp->tuple.dst.u3.ip = newip;