Sending UDP Packets from Android App to ESP32 does not work I'm building an android app that should talk to an ESP32. The setup is the following: The ESP32 configures itself as an access point The ESP32 regularly sends a connection request via UDP broadcast The APP connects the phone to the WiFi of the ESP32 (Credentials hardcoded for the moment) The APP receives the connection request Here is where I am stuck: The APP answers to the sender (The ESP32) with an acknowledgement. Now ESP32 and APP should know each other. I joined the WiFi with my laptop...