If you could return valid internal DNS entries for these domains, and serve up a 204 to the right requests, you should be able to stay online.
You need to ensure you don't do it for every possible domain - I believe Chrome also tests random non-existent domains too, to ensure it gets back the expected error.
Re:ESP32-C6, a Wi-Fi 6 and Bluetooth 5 (LE) SoC
by pfyra on Saturday April 10, 2021 @07:50AM
(#26760798)
I have a "captive" or "promiscuous" dns server (it responds with its own IP for all requests) for my esp projects so this info is exactly what I need. Thanks a lot!
If you could return valid internal DNS entries for these domains, and serve up a 204 to the right requests, you should be able to stay online.
You need to ensure you don't do it for every possible domain - I believe Chrome also tests random non-existent domains too, to ensure it gets back the expected error.