How to set the OpenShift DNS Operator as "unmanaged" and enable "force_tcp"?

Solution Verified - Updated -

Issue

One of the issues when enabling force_tcp as a workaround would be if you see following in the CoreDNS logs:

[ERROR] plugin/errors: dns: overflowing header size

Environment

  • Red Hat OpenShift Container Platform
    • 4.7
    • 4.6

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