[NETFILTER]: Apply PRE_ROUTING manips in LOCAL_OUT for locally generated icmp errors

ChangeSet 1.1534, 2004/12/21 17:23:20+01:00, [email protected]

	[NETFILTER]: Apply PRE_ROUTING manips in LOCAL_OUT for locally generated icmp errors
	
	Locally generated ICMP errors never hit PRE_ROUTING. Fixes invalid
	addressed ICMP errors for SNATed packets.
	
	Signed-off-by: Patrick McHardy <[email protected]>



 ip_nat_core.c |    8 ++++++++
 1 files changed, 8 insertions(+)


diff -Nru a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c
--- a/net/ipv4/netfilter/ip_nat_core.c	2005-01-15 07:04:04 -08:00
+++ b/net/ipv4/netfilter/ip_nat_core.c	2005-01-15 07:04:04 -08:00
@@ -918,6 +918,14 @@
 		/* Mapping the inner packet is just like a normal packet, except
 		 * it was never src/dst reversed, so where we would normally
 		 * apply a dst manip, we apply a src, and vice versa. */
+
+		/* Only true for forwarded packets, locally generated packets
+		 * never hit PRE_ROUTING, we need to apply their PRE_ROUTING
+		 * manips in LOCAL_OUT. */
+		if (hooknum == NF_IP_LOCAL_OUT &&
+		    info->manips[i].hooknum == NF_IP_PRE_ROUTING)
+			hooknum = info->manips[i].hooknum;
+
 		if (info->manips[i].hooknum != hooknum)
 			continue;