From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 17 Jun 2004 06:34:31 +0200
From: Michael Renzmann <mrenzmann@web.de>
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Subject: Re: [Bridge] Bridging between user processes
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To: Derek Smalls <dsmalls321@yahoo.com>
Cc: bridge@lists.osdl.org

Hi.

Derek Smalls wrote:
 >>I have not played with tun/tap myself, but the
 >>kernel documentation in
 >>Documentation/networking/tuntap.txt seems to
 >>indicate that you need a program to listen on two
 >>opened /dev/net/tun devices and copy the frames
 >>from one to the other.
> Thanks! I was afraid this was the reason ... :(
> 
> I actually tried writing an application that would
> open /dev/tap4 as a file and do a select() on it. 

The standalone tun-package [1] contains two example applications that 
act as simple bridges, one using SIGIO, one using select(). I guess it 
could be helpful for you to take a look at these examples.

[1] http://vtun.sourceforge.net/tun/tun-1.1.tar.gz

Bye, Mike