Auto-detection: How does HA determine that something is a Tuya device?

[jefft4]

Hi,

My HA is auto-detecting what it claims is a Tuya device. I have no Tuya login and no Tuya or SmartLife devices, but every time HA starts up, it detects one Tuya device. The localtuya integration also detects one device, which it names as '...' - clearly a really helpful device!!

What I'd like to know, is how HA decides that something is a Tuya device.

** Addition - I set logging for localtuya to 'debug' and it refers to listening for broadcasts on UDP/6666 & 6667; is that how it finds so-called Tuya devices? That would be interesting, as the only device I thought might be Tuya-related is in a different subnet than the HA server, so broadcast UDP traffic would not reach HA! The mystery deepens...

Can I get either of the Tuya integrations to tell me the IP address of the detected alleged Tuya device? That would pinpoint the culprit right away.

Thanks!