``stale-cache-enable`` was set to ``yes``. This has been fixed.
:gl:`#389` :gl:`#2289`
+- A deadlock could occur when multiple ``rndc addzone``, ``rndc
+ delzone``, and/or ``rndc modzone`` commands were invoked
+ simultaneously for different zones. This has been fixed. :gl:`#2626`
+
- ``named`` and ``named-checkconf`` did not report an error when
multiple zones with the ``dnssec-policy`` option set were using the
same zone file. This has been fixed. :gl:`#2603`