Not sure if this is normal behaviour butin the loging i see:
2023-03-16 16:00:31: New connection from 192.168.2.24:57820 on port 1883.
2023-03-16 16:00:31: Client shellyhuiskamer already connected, closing old connection.
2023-03-16 16:00:31: New client connected from 192.168.2.24:57820 as shellyhuiskamer (p2, c1, k60, u’mqtt-user’).
2023-03-16 16:00:46: New connection from 192.168.2.13:36940 on port 1883.
2023-03-16 16:00:46: Client shellyhuiskamer already connected, closing old connection.
2023-03-16 16:00:46: New client connected from 192.168.2.13:36940 as shellyhuiskamer (p2, c1, k60, u’mqtt-user’).
2023-03-16 16:00:48: New connection from 192.168.2.24:57821 on port 1883.