From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Kevin Hilscher" <KHilscher@Hatsize.com>
Subject: Duplicate IP scenario. Doable with iptables?
Date: Tue, 23 Nov 2004 12:44:07 -0700
Message-ID: <s1a330bd.064@mail2.hatsize.com>
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I have a somewhat odd scenario that requires the same pools of 192.168
IPs to be bound to eth1 and eth2 on the same machine. I need to NAT
another pool of 10.x.x.x IPs bound to eth0 to these two pools of 192.168
IPs. The setup is as follows:
 
eth0:10.115.0.1/16 -> eth1:192.168.0.1/24
eth0:10.115.0.2/16 -> eth1:192.168.0.2/24
eth0:10.115.0.3/16 -> eth1:192.168.0.3/24
eth0:10.115.0.4/16 -> eth1:192.168.0.4/24
eth0:10.115.0.5/16 -> eth1:192.168.0.5/24
eth0:10.115.0.6/16 -> eth1:192.168.0.6/24
   
eth0:10.116.0.1/16 -> eth2:192.168.0.1/24
eth0:10.116.0.2/16 -> eth2:192.168.0.2/24
eth0:10.116.0.3/16 -> eth2:192.168.0.3/24
eth0:10.116.0.4/16 -> eth2:192.168.0.4/24
eth0:10.116.0.5/16 -> eth2:192.168.0.5/24
eth0:10.116.0.6/16 -> eth2:192.168.0.6/24
 
Suse 8.1 has no problem letting me bind the same IPs to eth1 and eth2,
since eth1 and eth2 are not on the same physical network. However, I am
having problems writing my NAT rules for this scenario.
 
Is this scenario doable under iptables?
 
TIA,
 
Kevin