:ref:`setting-lua-records-insert-whitespace`, introduced in 4.9.1 with the default value (``yes``) set to maintain the old behaviour of inserting whitespace, is set to ``no`` in 5.0.
+lua-records-exec-limit feature restored
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The :ref:`setting-lua-records-exec-limit` setting, which will abort Lua records
+taking too much time to complete, had unintentionally been rendered ineffective
+in 4.3.0. Its functionality has been restored, which could cause existing
+configurations to stop working if this setting had been used with a too small
+value.
+
ixfrdist IPv6 support
^^^^^^^^^^^^^^^^^^^^^
* The ``add-zone-key`` command used to default to creating a ZSK,
if no key type was given. This default has changed to KSK.
+* The ``add-record``, ``delete-rrset``, ``edit-zone``, ``increase-serial`` and
+ ``replace-rrset`` operations will now refuse to work on secondary zones unless
+ the ``--force`` option is passed.
4.8.0 to 4.9.0
--------------