Created attachment 1024576 [details]
engine log

Description of problem:
Trying to create a new VNIC with a MAC (providing MAC manually), when that MAC is already used by another VNIC fails even though "Allow duplicates" is True

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Create a new MAC pool with "Allow duplicates" checked
2. Assign this MAC pool to a DC with 1 or more VMs on it
3. Add a new VNIC on a VM - it will be created with a specific MAC
4. Add a new VNIC to VM (or other VM) with manual configuration of the MAC from step 3

Actual results:
Creation of the VNIC fails with "MAC already in use" error message

Expected results:
New VNIC should be created as "Allow duplicates" is True

Additional info: