NVGRE Gateway Deployment with Azure Pack

Hi Guys,

We are deploying NVGRE Gateway for our Azure pack environment (SCVMM 2012 R2) using template Windows Server 2012 R2 HA Gateway - 3NIC and observing following error.

Add-SCNetworkService : Execution of
Microsoft.SystemCenter.NetworkService::GetDeviceCapability on the
configuration provider 4ee559f1-f479-480c-9458-d14b8b1c1779 failed. Detailed
exception: System.ArgumentOutOfRangeException: Index was out of range. Must be
non-negative and less than the size of the collection.
Parameter name: index (Error ID: 21426)

Check the documentation for the configuration provider or contact the
publisher support.

To restart the job, run the following command:
PS> Restart-Job -Job (Get-VMMServer cl-scv10-vmm01 | Get-Job | where { $_.ID
-eq "{121b190f-6137-40fc-bd57-ec46b2214cc7}"})
At line:1 char:1+ Add-SCNetworkService -Name "Azure NVGRE Gateway" -RunAsAccount $credentials
-Con ...+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~+ CategoryInfo          : ReadError: (:) [Add-SCNetworkService], CarmineEx
   ception+ FullyQualifiedErrorId : 21426,Microsoft.SystemCenter.VirtualMachineManag
   er.Cmdlets.AddSCNetworkServiceCmdlet

The RunAs account we are using is Admin on Hyper-V hosts as well Gateway machines and connectivity between all is fine.

Please help.