Index: mosquitto-2.0.8/mosquitto.conf
===================================================================
--- mosquitto-2.0.8.orig/mosquitto.conf
+++ mosquitto-2.0.8/mosquitto.conf
@@ -871,4 +871,4 @@
 # alphabetical order, with capital letters ordered first. If this option is
 # given multiple times, all of the files from the first instance will be
 # processed before the next instance. See the man page for examples.
-#include_dir
+include_dir /etc/mosquitto/conf.d