Observed in 

https://prow.ci.openshift.org/view/gs/test-platform-results/logs/periodic-ci-openshift-release-master-nightly-4.16-e2e-metal-ipi-serial-ovn-ipv6/1786198211774386176

there was a delay in creating master-0 ,

control plane services started on master-2, at this point (as master-0 wasn't yet in a provisioned state) we had 2 sets of provisioning services provisioning master-0 and presumably stomping over each other. 

master-0 never came up