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#
# Copyright (c) Microsoft Corporation. All Rights Reserved.
#
function StringToMacAddress([String]$MacString)
{
$zeroVal = [int]("0"[0]);
$aVal = [int]("A"[0]);
$macArray = @();
$byteOne = 0;
$byteTwo = 0;
for($i = 0; $i -lt 6; $i++)
{
$byteChars = $MacString.ToCharArray(2*$i, 2);
$byteOne = $byteChars[0] - $zeroVal;
$byteTwo = $byteChars[1] - $zeroVal;
if($byteOne -gt 9)
{
$byteOne = $byteChars[0] - $aVal + 10;
}
if($byteTwo -gt 9)
{
$byteTwo = $byteChars[1] - $aVal + 10;
}
$byteVal = 16*($byteOne) + ($byteTwo);
$macArray = $macArray + $byteVal;
}
return $macArray
}
Import-Module Hyper-V
$vmArr = Get-VM
$switch = Get-VmSwitch -Name "CorpNet"
$policy = Get-VmSystemSwitchExtensionSwitchFeature -FeatureName "MSForwardExt Mac Address Policy"
foreach($vm in $vmArr)
{
$vmName = $vm.Name
$adapters = Get-VmNetworkAdapter -VmName $vmName
foreach($adapter in $adapters)
{
Write-Host "Setting Policy for $vmName..."
$policy.SettingData.MacAddress = StringToMacAddress($adapter.MacAddress)
Add-VmSwitchExtensionSwitchFeature -VmSwitch $switch -VMSwitchExtensionFeature $policy
}
}
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