Does anyone know how Tuya works?

[WiFiNemesis]

So I just installed a smart wi-fi switch that uses the Smart Life app (Tuya by another name) for activation and control. With the app I assigned the switch to the guest network on my Synology RT2600ac router, and to my surprise everything worked the first time.

Except that the device does not show up on any of the router's DHCP client lists, and the Smart Life app says the switch has the IP address of the WAN interface.

How is it possible that the device is apparently unknown to the router, yet has local and internet access? What don't I understand here?

 

[Opso]

Try downloading the Fing app and see if Tuya shows up there. I would suspect it has an IP or Mac address.

 

[WiFiNemesis]

Thanks, but nope, Fing doesn't see them.
One of the recent router firmware updates now shows them on the DHCP list, though.

 

[sfx2000]

Thanks, but nope, Fing doesn't see them.
One of the recent router firmware updates now shows them on the DHCP list, though.

Move the device running Fing to the same subnet as the guest network.