1700000000: New connection from 203.0.113.9:54323 on port 8883.
1700000010: New connection from 203.0.113.10 on port 8884.
1700000020: Client mqtt_client_1 disconnected.
1700000030: New client connected from 203.0.113.11:44210 as mqtt_client_2 (p2, c1, k60).