Set DNS with PowerShell

Set-GoogleDns.ps1

<# 
.NAME
    Set-GoogleDns
.SYNOPSIS
    Set Google Public DNS with PowerShell
.DESCRIPTION
    Original code taken from: https://stackoverflow.com/questions/18724141/set-dns-with-powershell

#>

    # MS Docs: https://docs.microsoft.com/en-us/powershell/module/dnsclient/set-dnsclientserveraddress?view=win10-ps


    $ErrorActionPreference = "Continue"

    #Set all DNS addresses needed.
    write-verbose -Verbose "Set all DNS addresses needed."
    $Dns1 = "8.8.8.8" #Preferred 
    $Dns2 = "8.8.4.4" #Alternate
    $Dns3 = "2001:4860:4860:0:0:0:0:8888"
    $Dns4 = "2001:4860:4860:0:0:0:0:8888"

    #Combine addresses
    write-verbose -Verbose "Combining DNS addresses."
    $Dns = "$Dns1", "$Dns2", "$Dns3", "$Dns4"

    #Set network adapter ranges
    write-verbose -Verbose "Setting network adapter ranges."

    #Get Network adapters
    write-Verbose -Verbose "Now checking available network adapters."
    $Net = Get-NetAdapter | Select-Object ifIndex | Format-Table -a | Out-File -FilePath C:/Netadapter.txt
    $Net =  "C:/Netadapter.txt"

    #Setting ranges to work with
    $Ranges = (Get-Content $Net) -creplace "ifIndex", "" -creplace "-", "" | ForEach-Object {$_.Trim()} | Where-Object { $_ } | Sort-Object #| out-file C:/Netadapter.txt

    # Reset to Default DNS
    write-Warning -Verbose "Reset a DNS client to use the default DNS server addresses"
    foreach ($range in $ranges)    {
    Set-DnsClientServerAddress -InterfaceIndex $range -ResetServerAddresses
    }

    #Execute DNS change
    write-Warning -Verbose "Now executing DNS change to all available network adapters."
    foreach ($range in $ranges)    {
    Set-DnsClientServerAddress -InterfaceIndex $range -ServerAddresses ($DNS)
    }

    write-verbose -Verbose "DNS Settings have been altered."

    #Remove Netadapter.txt file
    Remove-Item -Path $Net

    #Get IP network configuration.
    Get-NetIPConfiguration