Adding upstream version 5.6.0.upstream/5.6.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/modules/edns_keepalive/README.rst b/modules/edns_keepalive/README.rst
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+.. SPDX-License-Identifier: GPL-3.0-or-later
+
+.. _mod-edns_keepalive:
+
+EDNS keepalive
+==============
+
+The ``edns_keepalive`` module implements :rfc:`7828` for *clients*
+connecting to Knot Resolver via TCP and TLS.
+The module just allows clients to discover the connection timeout,
+client connections are always timed-out the same way *regardless*
+of clients sending the EDNS option.
+
+When connecting to servers, Knot Resolver does not send this EDNS option.
+It still attempts to reuse established connections intelligently.
+
+This module is loaded by default. For debugging purposes it can be
+unloaded using standard means:
+
+.. code-block:: lua
+
+        modules.unload('edns_keepalive')