notebook multi-homed question

Lowell Gilbert freebsd-questions-local at
Mon Feb 6 13:36:15 PST 2006

"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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