It is new feature in TP:

https://issues.redhat.com/browse/OCPSTRAT-1868

https://issues.redhat.com/browse/OSDOCS-13004

Doc link for this feature:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/installing_on_vmware_vsphere/installer-provisioned-infrastructure#installation-vsphere-multiple-nics_installing-vsphere-installer-provisioned-network-customizations

Steps to reproduce the issue:

 [1] Create install-config file IPI way, or manually.

 [2] Populate multiple NIC cards in the same.

 [3] Install the cluster, I can see that the cluster network is not up.

~~~

message: 'container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady
      message:Network plugin returns error: no CNI configuration file in /etc/kubernetes/cni/net.d/.
      Has your network provider started?'

~~~

This is case with both of the scenarios where we are trying to install the cluster:

  [a] Same network 

 [b] one public & private network.

I will be sharing all the data to check this further. Always reproducible.