# Changes the DNS servers for a NIC with a specific subnet so it doesn't change another NIC's DNS servers.
$computer = Get-Content C:\temp\servers.txt
$NICs = Get-WMIObject Win32_NetworkAdapterConfiguration -ComputerName $computer | Where-Object {$_.IPAddress -like "172.16.234.*"}
ForEach-Object ($NIC in $NICs) {
    $NIC.SetDNSServerSearchOrder()
    $NIC.SetDynamicDNSRegistration(“TRUE”)
}