Indeed, you can assume that the vNIC label order corresponds with the PCI slot numbers order.
This can/could be caused by additions/removals of vNICs.
For example a vNIC that is never "connected" will not be "known" by the guest OS.
I now use the following to create the mapping between vNICs and adapters in the (Windows) guest OS.
$code = @'
Get-NetAdapterHardwareInfo |
select name,slot,@{N='mac';E={Get-NetAdapter -Name $_.Name | select -ExpandProperty MacAddress}} |
ConvertTo-Csv -UseCulture -NoTypeInformation
'@
Get-VM |
where{$_.PowerState -eq 'PoweredOn' -and $_.ExtensionData.COnfig.GuestFullName -match 'Windows'} | %{
$osPCI = Invoke-VMScript -VM $_ -ScriptText $code -ScriptType Powershell |
Select -ExpandProperty ScriptOutput | ConvertFrom-Csv
foreach($vnic in Get-NetworkAdapter -VM $_){
$osNic = $osPCI | where{$_.slot -eq $vnic.ExtensionData.SlotINfo.PciSlotNumber}
New-Object PSObject -Property ([ordered]@{
VM = $_.Name
Portgroup = $vnic.NetworkName
vMAC = $vnic.MacAddress
osMAC = $osNic.mac
vNIC = $vnic.Name
osNIC = $osNic.name
vSlot = $vnic.ExtensionData.SlotINfo.PciSlotNumber
osSlot = $osNic.Slot
})
}
}
I also made a short script that will change the guest OS adapter name to correspond with the PortGroup the vNIC is connected to.
That code could easily be changed to change the adapter name to whatever you desire.
Something like this.
$code = @'
Get-NetAdapterHardwareInfo |
select name,slot,@{N='mac';E={Get-NetAdapter -Name $_.Name | select -ExpandProperty MacAddress}} |
ConvertTo-Csv -UseCulture -NoTypeInformation
'@
$changeAdapterName = @'
Rename-NetAdapter -Name '#oldname#' -NewName '#newname#' -Confirm:$false
'@
Get-VM |
where{$_.PowerState -eq 'PoweredOn' -and $_.ExtensionData.COnfig.GuestFullName -match 'Windows'} | %{
$osPCI = Invoke-VMScript -VM $_ -ScriptText $code -ScriptType Powershell |
Select -ExpandProperty ScriptOutput | ConvertFrom-Csv
foreach($vnic in Get-NetworkAdapter -VM $_){
$osNic = $osPCI | where{$_.slot -eq $vnic.ExtensionData.SlotINfo.PciSlotNumber}
if($osNic){
if($osNic.Name -ne $vnic.NetworkName){
$codeAdapter = $changeAdapterName.Replace('#oldname#',$osNic.Name).Replace('#newname#',$vnic.NetworkName)
Invoke-VMScript -VM $_ -ScriptText $codeAdapter -ScriptType Powershell
}
}
}
}
