From mboxrd@z Thu Jan  1 00:00:00 1970
From: Felix Joussein <felix.joussein@gmx.at>
Subject: delayed masquerading problems after openswan ipsec
Date: Sat, 24 Jul 2004 10:14:41 +0200
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Hello List,

I'm not new to iptables, but this problem is very strange:

I have a Linux 2.4.26 + openswan ipsec + iptables 2.11 box with a cable 
modem to connect to the internet - so far:
I have one single rule in the postrouting chain:

iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE

This works fine - also my IPSec tunnel is working nice.
But after a while - can't say how long, the connection from the lan 
thrue the linux box get lost.
dmesg's Output is:

MASQUERADE: Route sent us somewhere else.
klips_error:ipsec_xmit_send: ip_send() failed, err=1

This message repeats as long, as  I remove the MASQ rule, and re-set it.

Has anyone an idea about this issue?

Thanks,

Felix