From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luciano Ruete <kies@myrealbox.com>
Subject: Re: Iptables with IP Alias
Date: Sun, 24 Nov 2002 15:19:48 -0300
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Juliano Dapper escribi=F3::
 > What's iptables not accept rules in ip alias, eth0:0, eth0:1?
 > I have a linux box with 2 ips and i have create ruls to redirect=20
traffic to internal machine,ex:
 > iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 25 -j DNAT --to=20
192.168.0.1
 > iptables -t nat -A PREROUTING -p tcp -i etho:0 --dport 80 -j DNAT --to
 > 192.168.0.2
 > eth0 - 200.200.200.1
 > eth0:0 - 200.200.200.2

Since kernel 2.4 aliases are matched in ethx rather than etx:x.
But this is not a limitation, you can match -d address in your case or
source address/network in others.

Slds !

--
Luciano