See the `3.X <https://doc.powerdns.com/3/authoritative/upgrading/>`__
upgrade notes if your version is older than 3.4.2.
+4.3.x to 4.4.0
+--------------
+
+``IPSECKEY`` change on secondaries
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The in-database format of the ``IPSECKEY`` has changed from 'generic' format to its specialized format.
+It is recommended to re-transfer, using ``pdns_control retrieve ZONE``, all zones that have ``IPSECKEY`` or ``TYPE45`` records.
+
4.2.x to 4.3.0
--------------
RRSIGRecordContent::report();
DSRecordContent::report();
CDSRecordContent::report();
+ IPSECKEYRecordContent::report();
SSHFPRecordContent::report();
CERTRecordContent::report();
NSECRecordContent::report();