Unable to communicate with Kubernetes service ip, missing OVN LB entries in OVN Northbound database(OVN NBDB)

Issue

• Errors reaching Kubernetes API in DNS pods

Kubernetes API connection failure: Get "https://172.30.0.1:443/version": dial tcp 172.30.0.1:443: connect: network is unreachable

plugin/ready: Still waiting on: "Kubernetes"

interesting pod/dns-default-ztpqf container/dns namespace/openshift-dns: Readiness probe status=failure output="HTTP probe failed with statuscode: 503" start-of-body=kubernetes

• Other OCP core applications like machine-config-daemon, etc, failed to communicate to Kubernetes service IP