combining network interfaces

[Jacques Manukyan]

Frederique Rijsdijk wrote:
> Hello,
>
> Is there a way in FreeBSD to combine a number of network interfaces to
> one virtual interface on which I can tcpdump all the traffic of those
> interfaces at once?
>   

You're talking about bridging. Look at 
http://www.freebsd.org/doc/en/books/handbook/network-bridging.html

Section 31.5.7.1 is what you're asking for.

-- Jacques Manukyan