In Group Policy Object Editor, expand Computer Configuration, expand Administrative Templates, expand Windows Components, and then click Windows Update.

Set the intranet update service for detecting updates: http://2016-dc01.ad.hxrsmurf.info:8530
Set the intranet statistics server: http://2016-dc01.ad.hxrsmurf.info
Specify Intranet Microsoft update service location/Set the alternate download server: http://2016-dc01.ad.hxrsmurf.info:8530

Technet