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Topic starter
06/02/2023 3:23 pm
I am trying to add a connection to my IoT MQTT Panel in Android. I get an error "Unable to connect to server ...(IPv6 addresses) and ECONNREFUSED".
Testing from my workstation;
$ telnet -6 mqtt.iotguru.cloud 8883 Trying 2a01:4f8:1c1c:13f8::1... telnet: Unable to connect to remote host: Network is unreachable $ telnet -6 mqtt.iotguru.cloud 8883 Trying 2a01:4f8:1c1c:13f8::1... telnet: Unable to connect to remote host: Network is unreachable $ telnet -6 mqtt.iotguru.cloud 8883 Trying 2a01:4f8:1c1c:13f8::1... telnet: Unable to connect to remote host: Network is unreachable $ telnet -6 mqtt.iotguru.cloud 8883 Trying 2a01:4f8:1c1c:13f8::1... telnet: Unable to connect to remote host: Network is unreachable
It looks like the App in Android doesn't switch over to IPv4 after getting a connection refused on IPv6.
I suggest that either the IPv6 AAAA-record should be removed from DNS, or better, get IPv6 answering on the service.
