Public Services in our LAN:
(Note: These are only accessible on site!)

  * MQTT:
    * mqtt.hackenopenair.de
    * 172.29.0.51 2001:bf7:3818:1:c8a:9cff:fed3:89d0 fe80::c8a:9cff:fed3:89d0
    * ''allow_anonymous true''