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Powershell: Generate a random MAC address

Here is a little powershell snippet that will generate a random mac address.

$Randomizer = New-Object System.Random
$RandomMac = ''
ForEach ($Number in 1..6) {
    $r = $Randomizer.Next(16,255)
    $Digit = [Convert]::ToString($r,16)
    $RandomMac += $Digit + ':'
}
$RandomMac.Substring(0,17)