The network connectivity test fails the initial DNS check when the DNS provider does not respond to 'ANY' requests.
- Datto ALTO
- Datto SIRIS
IETF RFC-8482 allows DNS servers to choose whether or not to respond to requests of the qtype 'ANY'. The ANY request is non-performant so it is likely that more DNS providers will drop support for it in the future.
Ensure the DNS provider the device is using still responds to 'ANY' requests.