In the past it was easy, create rfomm, bind rfcomm to the device, then create connection.
But now, /dev is populated every boot, so no permanent rfcomm. Maybe script that creates it at startup could help, dunno I haven' tried it yet.
Bluetooth now works on new driver and hcitols seems to not working, and old configuration files are ignored so can't bind device on given channel to the rfcomm.
Anyone made it work the new udev, bluez4 and btusb way?