Content is drafted and ready for review: http://docbuilder.usersys.redhat.com/20635/#Routing_Listener
Publishing notes to Alex: Deployment Guide [20635] 8.6.3. Configuring a Routing Daemon or Listener http://docbuilder.usersys.redhat.com/20635/#Routing_Listener
Content is now published: https://access.redhat.com/documentation/en-US/OpenShift_Enterprise/2/html/Deployment_Guide/Routing_Listener.html