Installing OCP 4 as private cluster on Azure

Issue

• Is it possible to deploy a fully private OpenShift 4 cluster on Azure using IPI method?
• How to deploy a fully private Openshift 4 cluster based on Azure using IPI method?
• Installing OCP 4.3 as private cluster in Azure using IPI installer following the documentation Installing a private cluster on Azure creates public components:
  • two public load balancers with
  • two public IP addresses
• The above results in that either:
  • the cluster is not as private as expected by reading the documentation or
  • fails to complete the installation