It was found that PowerDNS does not implement reasonable restrictions for zone sizes. This allows an explicitly configured primary DNS server for a zone to crash a secondary DNS server, affecting service of other zones hosted on the same secondary server.
Created pdns tracking bugs for this issue:
Affects: fedora-all [bug 1353566]
Affects: epel-all [bug 1353567]
The following patches are still under review but should be merged soon:
- Master: https://github.com/PowerDNS/pdns/pull/4133
- 3.4.x: https://github.com/PowerDNS/pdns/pull/4134
pdns-4.0.1-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.