====== Change Domain Controllers IP address ======
  * Change the IP to the desired address
  * In the PowerShell box, run **ipconfig /flushdns** to remove any cached DNS entries created by the local DNS resolver.
  * Run **ipconfig /registerdns** to ensure the new IP address is registered by the DNS server.
  * Run **dcdiag /fix** to update Service Principal Name (SPN) records and check that all the tests are passed successfully.