@sebastian-roth Hi,
nothing like that. The only thing reporting extra MACs is VirtualBox but not the problem at the moment.
I tried on many different hosts and getmac works properly, reporting a single MAC. Why does FOG detect more than one then?
The situation was the exact same as reported, one machine has, beyond his own MAC, as non-approved ones, the MACs (sometimes just one, sometime two or more) of other PCs. These MACs really exists and are the ones of the physical ethernet of other PCs. Also, no WLAN.
Any clue? Maybe I can try with a different model. These are tiny HPs.