But no answer from the official doc, list below

When the status of the ESP-MDF device (on/off), network connection (connected or disconnected), and route table change, the root node will send broadcast UDP packets to notify the app to obtain the latest status of the device.

I already know how to ...

Hi

Refer to the doc https://docs.espressif.com/projects/esp-mdf/en/latest/api-guides/mlink.html
How to get the following result and receive broadcast while the light is turn on/off?

2. Receiving Broadcast UDP Packets
When scanning for devices, the app broadcasts UDP packets and obtains the ...