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+.. SPDX-License-Identifier: GPL-3.0-or-later
+
+.. _mod-refuse_nord:
+
+Refuse queries without RD bit
+=============================
+
+This module ensures all queries without RD (recursion desired) bit set in query
+are answered with REFUSED. This prevents snooping on the resolver's cache content.
+
+The module is loaded by default. If you'd like to disable this behavior, you can
+unload it:
+
+.. code-block:: lua
+
+ modules.unload('refuse_nord')