Share DNS-Records between two zones/views (internal & external)

Hey,

I am considering migrating my current BIND-Based setup to PowerDNS.

For multiple zones, I currently have split-view in bind, so that I can define DNS-Records available only for internal clients.

To achieve this, I have the following zonefiles:

mydomain.com.ext.zone <- This zonefile is used for the external view

mydomain.com.int.zone <- This zonesfile is used for the internal view

But I also have:

mydomain.com.include <- This file is included in both zonefiles, so records defined there are available in both zones.

I was wondering, how I could replicate a setup like this in PowerDNS.

From what I was able to search online, in PowerDNS I can not have split views, but would need to use different PowerDNS instances and then something like dnsdist to forward queries based on the source IP.

But for DNS-Records that I want to have for internal AND external clients, I would need to create them in both PowerDNS-instances.

To me, the risk seems too high, that by accident, DNS-Records are only created/updated on one PowerDNS-Instance, but not on the other.

I was thinking about something like: The internal DNS-Server is authorative for mydomain.com and answers what it has, BUT instead of returning NXDOMAIN itself, it would forward the query to the external DNS-Server as well, who then either can resolve, or will return the "final" NXDOMAIN.

But that seems impossible.

Does anyone know how to achieve those "shared" records?

Thanks a lot

Sebastian

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