• Add IPv6 to clusterNetwork and serviceNetwork (not machineNetwork)
  • Both direction of conversions needs to be tested IPv4 -> dual-stack  -> IPv4
    • Add IPv6 address to the VM
    • Check VMs contain the new IPv6 configured in the interfaces appropriately once the user adds it. In other words the following manifest is enforced:
      https://github.com/openshift/machine-config-operator/pull/3785
    • Remove the restriction that enables the conversion: https://github.com/openshift/cluster-network-operator/pull/1697/files#diff-e68f94c90e1c01972187483984b3da57967f404e4e2a85a48433af6ca9d34c8cR357
    • This is only available in day 1 and likely needs to be implemented for day 2 https://github.com/openshift/installer/pull/7367
    • also need to verify how this fix impacts the conversion for us https://issues.redhat.com/browse/OCPBUGS-15910

Docs reference:

• https://docs.openshift.com/container-platform/4.13/networking/ovn_kubernetes_network_provider/converting-to-dual-stack.html