Comment 3 for bug 1856106

It does indeed raise a few questions, would you even be interested in having a zone named default if you use the configuration option? It would also be problematic to handle any changes to the config post-deploy.

FWIW, if a immutable config type approach would be on the table we have an example of how that can be handled here: https://review.opendev.org/#/c/701476/