I have a problem with device tracking. I have two computers that don’t know longer is getting tracked. They are listed in the known_devices.yaml. I have even deleted known_devices.yaml, restarted but the computers doesn’t get discovered. I use Tomato router, other computers is discovered but not the two in question.
I can see the computers in my Tomato router. So the data exists in the router.
I even deleted all files in the root of homeassistant and created a new config from scratch but still the same issue, and no new entries of the two computers in the newly created known_devices.yaml. Other computers are created in known_devices.yaml.
This isn’t going to be much help but I’ve been using the NMAP_Tracker and have been fighting with it to get an Amazon Echo discovered and also a SkyBell doorbell discovered. I’ve done the same troubleshooting without success. If you aren’t using the NMAP tracking, you might want to give that a try. You can use multiple trackers as well.