a couple of weeks ago we replaced a samba 4 on Ubuntu with a UCS.
Now we wanted to use the old server as a BDC for the UCS. Joining the server failed with the message, that an object with this mac address already exists. Since we couldn’t find an entry in the ldap for this mac we deactivated it and inserted a pci express card and gave it a different ip address.
Although it is impossible that this new nic is known to the ucs, the join failed with the error, that an object with this mac address already exists. We therefore assume, that there is some other kind of information about the old server somewhere stored on the system, maybe in the database files of the samba server.
Does anyone have an idea how this unique id is generated and how we can remove it?
Thanks for any hint or suggestions,