Difference between a vmware driver "bundle" and "offline bundle"

[wsanders]

I am confused about the difference between the "bundle" and "offline bundle" that come with the UCS VMware driver ISO. The zip files contain completely different VIBs, for example for an fnic driver:

In fnic_driver_1.6.0.34-offline_bundle-5367434.zip: CSCO_bootbank_scsi-fnic_1.6.0.34-1OEM.600.0.0.2494585.vib

In fnic_driver_1.6.0.34-5367434: scsi-fnic_1.6.0.34-1OEM.600.0.0.2494585.vib

Which do I install, or both? 

The "offline bundle" is much smaller than the other zip file as well. The install guide says to install the "offline bundle" so what's the larger version for?

Related question: Is there a driver upgrade that distributes the driver gouped first by OS version, rather than driver type, so I can avoid combing through all the subfolders in the ISO for a match with my OS version?

Thanks w

[wsanders]

Well, the short answer is that only the "offline bundle" will install with "esxcli software vib update -d":

[root@sac-esx01:~] esxcli software vib update -d /enic-2.3.0.13_ESX60-5416875.zip
 [MetadataDownloadError]
 Could not download from depot at zip:/enic-2.3.0.13_ESX60-5416875.zip?index.xml, skipping (('zip:/enic-2.3.0.13_ESX60-5416875.zip?index.xml', '', 'Error extracting index.xml from /enic-2.3.0.13_ESX60-5416875.zip: "There is no item named \'index.xml\' in the archive"'))
 url = zip:/enic-2.3.0.13_ESX60-5416875.zip?index.xml
 Please refer to the log file for more details.
[root@sac-esx01:~] esxcli software vib update -d /enic-2.3.0.13_ESX60-offline_bundle-5416875.zip
Installation Result
 Message: The update completed successfully, but the system needs to be rebooted for the changes to be effective.
 Reboot Required: true
 VIBs Installed: CSCO_bootbank_net-enic_2.3.0.13-1OEM.600.0.0.2494585
 VIBs Removed: CSCO_bootbank_net-enic_2.3.0.10-1OEM.600.0.0.2494585
 VIBs Skipped: