When OS doesn't have default route, ovnk is experiencing problems and causing cluster to not become fully functional

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Personally, I built an RHEL4Edge ISO with container images embedded, installed and started the VM with libvirt network configured per instructions in https://github.com/openshift/microshift/blob/main/docs/rhel4edge_iso.md#offline-mode

But I think it might just work on regular RHEL by: starting MicroShift to obtain the images, stopping VM, disconnecting network, and starting it again (without running microshift-cleanup to keep the images after boot)

ovn-k doesn't fully start, blocking start of the cluster

NAMESPACE                  NAME                                  READY   STATUS    RESTARTS        AGE
openshift-ovn-kubernetes   ovnkube-master-22mqb                  3/4     Running   4 (2m39s ago)   23m
openshift-ovn-kubernetes   ovnkube-node-xtghg                    1/1     Running   0               23m

ovn-k handles "no default route" correctly and cluster proceeds to start to become fully functional

Slack thread with the discussion after I noticed the issue
https://redhat-internal.slack.com/archives/C03CJTNLKAT/p1681828117473549