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From: Robert Du Gaue <rdugaue@calweb.com>
To: David Brockus <dbrockus@cyberhall.com>
cc: FreeBSD questions <questions@FreeBSD.org>
Subject: Re: IP aliasing
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> network_interfaces="ep0 lo0"
> ifconfig_ep0="inet xxx.xxx.xxx.131 netmask 255.255.255.224"
> ifconfig_lo0="inet localhost"
> ifconfig_ep0="alias xxx.xxx.xxx.132 netmask 255.255.255.224"
> 
> Is this the correct syntax and location to add the alias?
> 
> And where do I need to add a route to the second IP number?

You also need to add a default route of that IP to localhost.

route add -host xxx.xxx.xxx.132 127.0.0.1

should do the trick.

Here's sample on how we do it:

echo -n 'starting ftp spoofs:'

echo -n 'ftp.gigo.com '
/sbin/ifconfig de0 inet 165.90.138.208 alias 255.255.255.0
/sbin/route add 165.90.138.208 127.0.0.1