[ISC-support #14606] Extend catalog zones to be able to work with multiple views
A customer has requested a way to use the zone "in-view" option with zones maintained by a catalog zone.
While discussing the request with the customer, I thought that perhaps another variant would be to be able to declare the catalog zone itself to be 'in-view' (referring to a catalog zone in another view), which then implies that all of the zones created by it should also be set up with 'in-view' copies.