I created a temperature sensor on ESP32 running ESPHome.
I used Wireshark integration to connect the ESPHome instance to the same LAN when HA runs.
Everything works, I can use the sensors, I can update ESPHome core and I can update my ESPHome YAML.
BUT … the ESP shows OFFILINE in ESPHome dashboard.
Does anybody knows how to get them “nicely” online ?
you have a mdns issue.
You will still be able to visit/program/read logs.
And the add-on you only need to (re-)program the esp, it doesn’t have any functional purpose for HA.
So if everything works, don’t think about it too much