@chaonatic the simplest way to find the duplicate mac is to open a sql prompt on your FOG server;
Run: mysql -u root -p
, and enter your sql root password.
Then run the following commands (replacing the list of macs with the ones the client is using):
use fog;
SELECT * FROM hostMAC WHERE hmMAC IN ('00:01:00:00:00:66', '00:01:00:00:00:67');
exit;
Ideally each mac address should only appear once in the hmMAC
result column. If there is one that appears multiple times, that is the culprit.
In general though, these kinds of errors are usually caused by virtual network adapters in your image.