different wpa_supplicant drivers

[Riccardo Veraldi]

Hello,
I am trying 802.1x and WPA on different linux distributions always 
withthe same ipw2200 hardware
It works but...

On Red Hat enterprise 4  2.6.9-34.EL using ipw and ieee811 from atrpms
wpa_supplicant -d -w -ieth1 -Dipw -c /etc/wpa_supplicant.conf

and everything works, that is I use wpa_supplicant with ipw driver


on Ubuntu 5.10 is the same I Always use ipw wpa_supplicant driver

on Fedora Core 5 with kernel 2.6.16-1 I have to use driver wext instead 
of ipw

how come ?
with ipw driver it will not work and wpa_supplicant needs to be started 
with -Dwext option.

what I have to do to know in advance if the driver is generic wext or 
specific ipw2200 ?

Why on Fedora is wext and not ipw ?
thanks a lot

Rick