zones will already be available. While a domain is being loaded, it is
not yet available, to prevent incomplete answers.
-Reloading is currently done only when a request for a zone comes in, and
-then only after :ref:`setting-bind-check-interval`.
+Reloading is currently done only when a request (or zone transfer) for a
+zone comes in, and then only after :ref:`setting-bind-check-interval`
seconds have passed after the last check. If a change occurred, access
to the zone is disabled, the file is reloaded, access is restored, and
the question is answered. For regular zones, reloading is fast enough to