OCP 4 Assisted Installer shows an error 'IP address is outside of selected subnet' while setting API and Ingress IP

Solution Verified - Updated -

Issue

  • During the OCP 4.x deployment using Assisted Installer, on the Networking page with Cluster-Managed Networking selected from the Network Management section, the API and Ingress IP show an error IP address is outside of selected subnet
  • I would like to use an external load balancer for API and Ingress traffic and the installer does not let me use the external IP addresses.

Environment

  • Red Hat Openshift Container Platform 4.x
  • Assisted Installer

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