From owner-freebsd-hackers@FreeBSD.ORG  Tue Apr 19 15:27:45 2005
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Date: Tue, 19 Apr 2005 10:13:38 -0500 (CDT)
From: Adam Maloney <adam@whee.org>
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Subject: Re: virtual swich
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On Tue, 19 Apr 2005, Eric Anderson wrote:

> Donatas wrote:
>> hello,
>> 
>> are there any solutions for emulating a network switch between network 
>> interfaces under FreeBSD 5.3?
>> i cannot use ng_hub because it does not filter packets by their mac 
>> addresses...
>> the purpose is switching between ngeth0,ngeth1 and em0.
>> 
>> any ideas are welcome
>
> Is this what you want?
>
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network-bridging.html

I had a similar need a few months ago, and found two other projects that 
might be helpful:

http://people.freebsd.org/~picobsd/picobsd.html
and picobsd(8)

http://www.pdos.lcs.mit.edu/click/

I had trouble building the correct configuration with Click.  I ended up 
using a picobsd floppy.  Easy-peasy.

HTH,

Adam