Red Hat Summit7.4.
$ oc get bmh -n openshift-machine-apiNAME STATUS PROVISIONING STATUS CONSUMER openshift-master-0 OK externally provisioned openshift-zpwpq-master-0 openshift-master-1 OK externally provisioned openshift-zpwpq-master-1 openshift-master-2 OK externally provisioned openshift-zpwpq-master-2 openshift-worker-0 OK provisioned openshift-zpwpq-worker-0-lv84n openshift-worker-1 OK provisioned openshift-zpwpq-worker-0-zd8lm openshift-worker-2 error registering$ oc get -n openshift-machine-api bmh <bare_metal_host_name> -o yaml... status: errorCount: 12 errorMessage: MAC address b4:96:91:1d:7c:20 conflicts with existing node openshift-worker-1 errorType: registration error ...
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