.. namedconf:statement:: request-ixfr
- See the description of ``request-ixfr`` in :ref:`server_statement_definition_and_usage`.
+ The ``request-ixfr`` statement determines whether the local server, acting
+ as a secondary, requests incremental zone transfers from the given
+ remote server, a primary.
+
+ IXFR requests to servers that do not support IXFR automatically
+ fall back to AXFR. Therefore, there is no need to manually list which
+ servers support IXFR and which ones do not; the global default of
+ ``yes`` should always work. The purpose of the ``provide-ixfr`` and
+ ``request-ixfr`` statements is to make it possible to disable the use of
+ IXFR even when both primary and secondary claim to support it: for example, if
+ one of the servers is buggy and crashes or corrupts data when IXFR is
+ used.
+
+ It may also be set in the zone block; if set there, it overrides the global
+ or view setting for that zone. It may also be set in the
+ :namedconf:ref:`server` block.
.. namedconf:statement:: request-expire
value of the ``provide-ixfr`` option in the view or global options block
is used as a default.
-.. namedconf:statement:: request-ixfr
-
- The ``request-ixfr`` clause determines whether the local server, acting
- as a secondary, requests incremental zone transfers from the given
- remote server, a primary. If not set, the value of the ``request-ixfr``
- option in the view or global options block is used as a default. It may
- also be set in the zone block; if set there, it overrides the
- global or view setting for that zone.
-
- IXFR requests to servers that do not support IXFR automatically
- fall back to AXFR. Therefore, there is no need to manually list which
- servers support IXFR and which ones do not; the global default of
- ``yes`` should always work. The purpose of the ``provide-ixfr`` and
- ``request-ixfr`` clauses is to make it possible to disable the use of
- IXFR even when both primary and secondary claim to support it: for example, if
- one of the servers is buggy and crashes or corrupts data when IXFR is
- used.
-
.. namedconf:statement:: request-expire
The ``request-expire`` clause determines whether the local server, when
- :namedconf:ref:`notify-source`
- :namedconf:ref:`query-source-v6`
- :namedconf:ref:`query-source`
+ - :namedconf:ref:`request-ixfr`
- :namedconf:ref:`request-nsid`
- :namedconf:ref:`send-cookie`
- :namedconf:ref:`transfer-format`