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Date: Tue, 14 Nov 2006 10:08:10 +0000
From: Vince <jhary@unsane.co.uk>
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Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject: Re: [OT]two networks, one nic
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Its certainly possible. In fact on FreeBSD you can only have multiple
addresses in one interface if they are in different broadcast domains
(although one can be a subset (say /32) of the other. I have 10.0.0.1/25
and  10.10.10.1/24 on my wireless interface at home. Its often a good
idea to separate networks physically but by no means a requirement.

Vince

jekillen wrote:
> Hello FreeBSD users,
> I have been operating under the assumption that
> the same network interface card cannot handle two
> different networks. But then I seem to have seen
> an example in one of the OReillĄ books on networking
> that had one interface with one assigned inet address
> and also aliased with another address that could only
> be on another network. If I understood that right, it
> seems to imply that I can use one Network interface
> card for at least two different networks, like so;
> 192.168.1.<somthing> and
> alias 172.0.0.<something>
> or;
> 192.168.1.<something>
> alias 192.168.2.<something>
> If this is possible is it accomplished via a special routing?
> My concern is that I have a laptop with one network
> interface, built in,  but would like to access it both at
> a public static address and a private network address.
> Is this possible?
> 
> Thanks in advance for time and attention;
> Jeff K
> 
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