@tssk What my issues with it are: there is an official binding and installation instruction here on mysensors.org and it does not work reliably the ESP8266 Ethernet Gateway Example connected the first time and then stopped working at all the ESP8266 MQTT Gateway Example connected the first time and then stopped working at all when looking at the MQTT broker, messages do come in, but the official binding (see above) does not register them, does not update the things/items in OpenHAB. This leads me to the conclusion that the official binding does not handle disconnects very well. Once disconnected, it either takes forever to re-establish a connection or it straight up refuses to work again unless maybe if I rebooted the OpenHAB machine. When I completely ignore the existence of the official OpenHAB binding that is promoted here as "the" way of connecting to OpenHAB, and instead use a generic MQTT binding, it works like a charm. I am just confused that the "official" way is so unreliable. I expected this to be the best way. That's why I went for it.