>> It's based on the Linux Digi driver which is under the GPL.  It also
>> contains code stolen from the sio driver, but the sio driver is not
>> under the GPL.
>
>Someone should fix the comment in FreeBSD's dgb.c then....   ;-)

I admit this is a little vague, but not that unclear... especially as
the sio.c file does not reside in the GNU portion of the sys tree:

 *  Based on sio driver by Bruce Evans and on Linux driver by Troy
 *  De Jongh <troyd@digibd.com> or <troyd@skypoint.com>
 *  which is under GNU General Public License version 2 so this driver
 *  is forced to be under GPL 2 too.

--
Justin