Monitoring mode gets frames from more than one channel!

[eduardgv]

> 
> In monitor mode card does not transfer any frames, it only listens, so
> scanning while in monitor mode is out of question.


why scanning while in monitor mode is out of question? Passive
scanning implies no frame transfer. In passive scanning the firmware
just listens for Beacon messages and no frame is transmitted, and
therefore it can be compatible with rfmon.