<p></p>
<p><b>@agranig</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/kamailio/kamailio/pull/3261#discussion_r994237590">src/modules/mqtt/doc/mqtt_admin.xml</a>:</p>
<pre style='color:#555'>> @@ -324,6 +324,27 @@ modparam("mqtt", "ca_path", "/etc/ssl/certs")
                <programlisting format="linespecific">
 ...
 modparam("mqtt", "tls_method", "tlsv1.3")
+...
+               </programlisting>
+               </example>
+       </section>
+       <section id="mqtt.p.tls_alpn">
+               <title><varname>tls_alpn</varname> (str)</title>
+               <para>
+        Used to set the TLS ALPN option for cases where one TLS port is used to share multiple services. Prominent
+        example is AWS IoT, where you have to set the <varname>tls_alpn</varname> to "mqtt" to be able to connect
+        via MQTT.
+               </para>
+               <para>
+               <emphasis>
+                       Default value is NULL, where no ALPN is set on the TLS connection.
</pre>
<p dir="auto">I'd propose to do this in a second step to not mix commits. So I'm going to amend the current one, and in a second pull request change the wording of all mod params regarding NULL</p>

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