Detecting a wireless interface

[Warren Block]

On Thu, 13 Oct 2011, Adrian Chadd wrote:

> I can't think of anything, sorry. You may have to write a command line
> app that does a net80211 ioctl to see, or maybe there's a way to query
> the media type to tell you whether it's wifi or not.

Hadn't looked at it before, but parsing ifconfig output is what was used 
already (bsdinstall netconfig, in this case).  I just reused it:
   http://www.freebsd.org/cgi/query-pr.cgi?pr=161547