Comment 4 for bug 1814012

Re range of possible values for -D option:

From man wpa_supplicant:

AVAILABLE DRIVERS
       A summary of available driver backends is below. Support for each of the driver backends is
       chosen at wpa_supplicant compile time. For a list of supported driver backends that may be used
       with the -D option on your system, refer to the help output of wpa_supplicant (wpa_supplicant -h).

       wext Linux wireless extensions (generic).

       wired wpa_supplicant wired Ethernet driver

       roboswitch
              wpa_supplicant Broadcom switch driver

       bsd BSD 802.11 support (Atheros, etc.).

       ndis Windows NDIS driver.

from wpa_supplicant --help on my system:

drivers:
  nl80211 = Linux nl80211/cfg80211
  wext = Linux wireless extensions (generic)
  wired = Wired Ethernet driver
  none = no driver (RADIUS server/WPS ER)