PowerShell script to add multiple DNS in Windows Servers

Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter IPEnabled=TRUE -ComputerName . | Format-Table -Property IPAddress

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$test=Get-NetAdapter |findstr -I up | select -first 1
$index=$test.split()[-22]
Set-DnsClientServerAddress -interfaceIndex $index -ServerAddresses ("172.30.62.21","172.30.62.22","172.28.62.21","172.28.62.22")
Get-DnsClientServerAddress