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Date: Sun, 10 Mar 1996 20:30:01 -0800 (PST)
From: Robert Du Gaue <rdugaue@calweb.com>
To: Craig Shrimpton <craigs@venus.os.com>
cc: questions@FreeBSD.ORG
Subject: Re: Question about Virtual domains (ifconfig alias)
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> I can setup ifconfig aliases with: 
> 
> ifconfig de0 alias xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx 
> 
> and they seem to work fine with two exceptions. First, if I ping the 
> alias domain from the host machine I get dup pings and secondly I can't 
> traceroute to the domain from anywhere on the net.  Is this normal 
> behaviour or do I need some additiona configuration?  Apache seems 
> to work fine but the dup pings and the inability to traceroute seems 
> a little "rough" at the edges.
> 

Hmmm. Doesn't act like that for us, we;re using Apache and doing pretty 
much the same thing. Have about 100 spoofed domains. We have an inhouse 
script to mass assign a block of spoofed domains, basically it executes 
the commands like this:

/sbin/ifconfig de0 inet xxx.xxx.xxx.xxx alias yyy.yyy.yyy.yyy (x = host, 
y = netmask)

And then :

/sbin/route add -host xxx.xxx.xxx.xxx localhost

Works fine for us!