I've just come a cropper trying to get the custom DynDNS client to work with PowerDNS's API which wants something like this:

curl -X PATCH --data '{"rrsets": [ {"name": "host1.example.co.uk", "type": "A", "changetype": "REPLACE", "records": [ {"content": "192.0.5.4", "disabled": false, "name": "host1.example.co.uk", "ttl": 86400, "type": "A" } ] } ] }' -H 'X-API-Key: d41d80000000000000998ecf8427e' http://ns.example.co.uk:8081/servers/localhost/zones/example.co.uk

Still, it was a fun experiment …

Please could the gateway groups be added to the RFC2136 interface list in the same way as the DynDNS client?

BTW I could make a test PowerDNS server available to a dev if wanted to add support.