> 1. Proposed title of this feature request

Document that's possible to boot an OpenShift cluster without the requirement for an external DNS server

> 2. What is the nature and description of the request?

Documentation updated:

• document that's possible to boot with the internal DNS server
• document that it's required to specify an external DNS server when internet access is required

> 3. Why do you need this? (List the business requirements here)

• We want to be sure that our solution is supported.

> 4. How would you like to achieve this? (List the functional requirements here)

See the related support case, we made a proposal on how this can be implemented. See architecture review document by RedHat

> 5. For each functional requirement listed in question 4, specify how Red Hat and the customer can test to confirm the requirement is successfully implemented.

Set the DNS to the internal API server ip address or no DNS and wait till the cluster is booted and the node IP address is
added. Make sure that the cluster works correctly:

• Create an air-gapped test deployment
• test machine operator
• ...