While looking at FHEM logs, that appeared:
2014.12.11 22:00:16 3: HMLAN1: Unknown code A0F51BB102BBB1E 0000000AE0BB0E000F::-85:HMLAN1, help me!
The device ID is:
After googling for a while a potential solution is to create a vccu:
define vccu CUL_HM <$hmId> attr vccu model CCU-FHEM
Where <$hmId> is your HM ID of your Lan interface or similar.
Or it might be a device from a house nearby, and you want to ignore that device:
define IGNORE_ME CUL_HM <$hmId> attr IGNORE_ME ignore 1
That should help