d-bus or management api for beacon stuff

Hi,

I was trying to write some code to continuously scan the bluetooth field
for bluetooth devices sending advertising packets (ie beacon-mode).

These devices would come and go so I wanted to avoid the cache.

I noticed the D-Bus interface doesn't quite allow me to do this (as it
caches the devices and I can't monitor the RSSI field).  But I think the
bluetooth management interface does. Is that the correct approach?

Cheers,
Don