I used to use wicontrol to allow capturing of 802.11b frames. Now that wicontrol has been removed from -current / soon to be 4.0 how do you enabled this capability?
wicontrol(8)
-F 0|1 [Prism2 only] Enable or disable processing of 802.11b frames.
When enabled, the wi(4) driver will process entire frames
instead of stripping off the 802.11b header that is provided by
the card. Only the superuser may use this option.

