I think I have found a bug.
I create Custom ISOs for ESXi 6.0 so I can include the latest drivers and the VIBs for our storage.
I created a new ISO with ESXi 6.0 Update 2 with the latest Dell OpenManage 8.3.0 VIB.
In vCenter(6.0) Update Manager, I have the Dell repo as a download source: https://vmwaredepot.dell.com/index.xml
I downloaded the OpenManage 8.3.0 VIB from here: http://www.dell.com/support/home/us/en/19/Drivers/DriersDetails?driverId=C1PKP
However, now when I run a scan of the host with Update Manager, it fails and the error in esxupdate.log:
2016-04-28T15:44:03Z esxupdate: esxupdate: ERROR: ValueError: Cannot merge VIBs Dell_bootbank_OpenManage_8.3.0.ESXi600-0000, Dell_bootbank_OpenManage_8.3.0.ESXi600-0000 with unequal payloads attributes: ([OpenManage: 7809.081 KB], [OpenManage: 7807.439 KB])
I'm seeing older version of OpenManage that had this same error and it was a bug.
Things I have done: Reinitialize VUM database, which I can then scan the hosts successfully. Once I add back in the Dell repo, it starts failing again with the above error in the esxupdate.log file.
Anyone else seeing the same thing?