MQTT broker in gateway

I am trying to set up the MQTT broker on the gateway, but I’m not able to get the server (on another machine) to accept the device. I have changed the IP in the gateway bridge and the server. The join messages are arriving at the broker, but the server is not receiving them. Everything works correctly when the broker is on the server. Is there anything else I should configure?

I changed the mqtt server also in the chirpstack region_auxxxxx.toml config file and now it’s working.