Are there certain MAC address vendor codes that don't work on windows or is there something else wrong with my code?

Question

Following @Asian's question and my recent interest in powershell, I tried to replicate the script I provided to answer Asian's question, however I am not having the same success that I did with the batch script. If you do not want to view the previous question, here is my batch-file for changing your MAC Address:

@echo off
dism >nul
if %errorlevel% NEQ 0 goto Elevate
(call )
netsh interface set interface Wi-Fi disable
timeout /t 1 /nobreak >null
netsh interface set interface Wi-Fi enable
choice /c RC /m "Would you like to randomize your MAC adress or customize it?"
if %Errorlevel% EQU 2 goto custom
set loopcount=5
:loop
set /a loopcount=loopcount-1
if %loopcount% LEQ 0 (goto exitloop)
set /a "ascii = %random% * 26 / 32768 + 65"
cmd /c exit /b %ascii%
set "rl1=%rl1%%=ExitCodeAscii%"
goto loop
:exitloop
set MAC="0E%random:~0,2%%rl1:~0,2%%random:~0,2%%rl1:~3,2%%rl1:~-1%%random:~0,1%"
goto after
:custom
echo What would you like to change your MAC address to?
echo Remember to always have the second digit of your MAC address to always be a 2, 6, A, or E
echo Format: AABBCCDDEEFF
echo/
set /p MAC="Input your MAC address here (no spaces or hyphens)> "
:after
reg add "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0011" /v NetworkAddress /d %MAC% /f >null
netsh interface set interface Wi-Fi disable
timeout /t 1 /nobreak >null
netsh interface set interface Wi-Fi enable
echo Operation Successful
echo %mac% is your new MAC address
pause
goto :eof
:Elevate
Echo Error: The requested operation requires elevation
Echo Run file again as admin
Echo Closing file in 10 seconds...
timeout /t 10 /nobreak >nul
goto :eof

I tried to replicate it in powershell, however the script is very volatile on whether it works or not:

[string]$admin = [bool](([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")
if ($admin -eq "False"){
echo "Error: The requested operation requires elevation`nRun file again as administrator"
pause
exit}
rv * -ErrorAction SilentlyContinue
echo "This file will temporarily disable your Wi-Fi adapter"
While (!($C1)){
$choice1 = Read-Host -Prompt "Would you like to proceed? [Y/N]"
switch ($choice1) {
   "N" {echo "Ok, press any key to exit this file:"
        cmd /c pause > $null; exit}
   "Y" {echo "Ok, proceeding with operation"; [int]$C1 = 1; break}
   }
if (!($C1)){echo "Invalid input"}
}
rv * -ErrorAction SilentlyContinue

netsh interface set interface Wi-Fi disable; 

$getwifi = netsh interface show interface | findstr "Wi-Fi"
if ($getwifi.substring(0,7) -ne "disable"){echo "Unexpected error: Press any key to exit"
                                           cmd /c pause > $null; exit}
echo "Wi-Fi has been succesfully disabled, proceeding with operation"

While (!($C1)){
    $choice1 = Read-Host -Prompt "Would you like to randomize your MAC Address or customize it? [R/C]"
    switch ($choice1) {
        "R" {
            $test = @(...) | get-random
            <# $test is a random value in a list of 25000+ MAC Address vendor codes provided in 
            https://gitlab.com/wireshark/wireshark/raw/master/manuf with the colons removed and columns 
            besides the MAC column removed as well #>
            $test2 = [string](get-random -minimum 10 -maximum 99)+(-join ((65..90) | Get-Random -Count 2 | % {[char]$_}));
            $test3 = [string](get-random -minimum 1 -maximum 9)+(-join ((65..90) | Get-Random -Count 1 | % {[char]$_}));
            $MAC = $test + $test2 + $test3;
            $C1 = 1}
        "C" {$C1 = 2}
    }
if (!($C1)){echo "Invalid input"}
}

if(!($MAC)){
do{
echo "What would you like to change your MAC address to?`nRemember to always have the second digit of your MAC address to always be a number`nFormat: 11BBCCDDEEFF";
$MAC = read-host -prompt "Input your MAC address here [no spaces or hyphens]";
if ($MAC.length -eq 12){$C1 = 1};
if (!($MAC.length -eq 12)){echo "Invalid input: Follow the format"; rv MAC}
} while(!($MAC))
}
reg add "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0011" /v NetworkAddress /d $MAC /f >$null
netsh interface set interface Wi-Fi enable
echo "Operation Successful"
echo "$MAC is your new MAC address"
pause

Again, $test is a random value in a list of 25000+ MAC Address vendor codes provided in https://gitlab.com/wireshark/wireshark/raw/master/manuf with the colons removed and columns besides the MAC column removed as well. I believe the issue is in the $test variable where the computer will just reject a certain MAC address. If this is not the issue, can someone explain to me what is the issue, and if there are certain codes that will always work in changing the MAC address successfully, please provide me them. Thank you in advance.

Some addresses that work include:

• AABBCCDDEEFF
• 001122334455
• 00AA11BB22CC
• Other variants of 00----------
• 6E80F12CC8C9

I will write more sample addresses down when I test them.

Answer 1

Try macaddr=$(echo $FQDN|md5sum|sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/') &> /dev/null && echo macaddr. This will generate a random MAC address and echo it to you. This only works in Ubuntu/Bash though.

You can also do (1..12 | %{ '{0:X}' -f (Get-Random -Max 16) }) -join '' in PowerShell.