There is an undocumented and fully unsupported way to change the MAC-Address of a virtual machine in a vCloud Director environment.
Please validate first that the vApp in vCloud Director is fully powered off before proceeding.
Use the following SQL query to identify the MAC Address of the virtual machine:
SELECT mac_address FROM dbo.network_interface WHERE vm_id IN (SELECT id FROM dbo.vm WHERE name LIKE 'THE VM I SEARCH FOR');
Please ensure that you have a unique hit, otherwise you might need to add additional search parameters.
With an update statement like: Read more »