Hello Bastian -
well, one might argue about that. The IBSSID is not a MAC address, IMHO. The IBSSID uses a EUI-48 identifier format. In master mode the BSSID is derived from the AP NICs MAC address. So if you override the factory MAC with a locally configured MAC of your APs NIC, you ought to use 02: rather than 00:, true.
However IBSSID's according to 802.11 protocol ought to be randomly generated - and most drivers do just that, regardless whether they begin with 02: or not. (I think the old Orinoco firmware did it that way, but I'm not sure)
So I think it is OK to use whatever you like and is easy to remember, except 00:00:00:00:00:00 or FF:FF:FF:FF:FF:FF
so use: 02:BE:EF:CA:FF:EE 8-)
Of course.
The problem with the popular IBSSID 02:CA:FF:EE:BA:BE is that you get strange effects if you have two different ad-hoc cells in range, which are accidently using the same IBSSID...
Cheers, Elektra
(cu @26c3:)