notebook multi-homed question

Robert Ken Francis rkfrancis1 at
Sat Feb 11 08:11:26 PST 2006

> -----Original Message-----
> From: owner-freebsd-questions at 
> [mailto:owner-freebsd-questions at] On Behalf Of 
> Lowell Gilbert
> Sent: Monday, February 06, 2006 4:36 PM
> To: rkfrancis1 at
> Cc: freebsd-questions at
> Subject: Re: notebook multi-homed question
> "Robert Ken Francis" <rkfrancis1 at> writes:
> > Hello,
> > This is probably a common hardware configuration.  I have a 
> wireless 
> > NIC in my notebook and a built-in NIC.  My wireless NIC is 10 times 
> > slower than my built-in NIC so I prefer to just plug in the 
> built-in 
> > NIC when I can.
> > 
> > I would like to have them both going to the same router.  In my 
> > Windows partition I have a "Network Bridge" to bridge together the 
> > NICs.  The soft bridge has its own IP address. The 
> advantage is that I 
> > don't have to configure anything or do anything.  It just works. Is 
> > there a software bridge like this in FreeBSD?
> if_bridge(4) should do most of what you need, and even 
> implements spanning tree, but it might take a little work to 
> make sure that the wired connection gets the traffic when present...
> -- 
> Lowell Gilbert, embedded/networking software engineer, Boston area
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Thanks Lowell.  It seems like you are the only one who replied.  I
tried if_bridge(4) but I don't think I got the configuration right, and
Worse I ended up blowing out my wireless NIC... it no longer is
able to ping local IP addresses but I can still surf the Internet.

So for me I'm out of it.  But for others is there a HOWTO?
This has got to be a common problem for notebook and laptop
users with a built-in NIC and a built-in or cardbus wireless NIC.

Thanks in advance for any replies.

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