A DAB/Internet radio (made by Karcher in Germany) broadcasts an SSID (details). It cannot be disabled and neither the SSID nor the MAC address can be changed.
Can someone explain why this is necessary?
A DAB/Internet radio (made by Karcher in Germany) broadcasts an SSID (details). It cannot be disabled and neither the SSID nor the MAC address can be changed.
Can someone explain why this is necessary?
Almost certainly leftover reference-firmware laziness, not an actual requirement. A lot of cheap WiFi-radio modules ship with a default setup-AP mode meant for initial onboarding via a companion app, and a lot of OEMs never gate it behind a real first-boot-only flag, so it just stays broadcasting forever.
Since you can’t disable it or change the MAC, containment beats fixing it: block that MAC at your AP/controller so it can’t associate with anything, or isolate it if your AP supports MAC-based assignment. Doesn’t stop it broadcasting, but stops it being useful to anything nearby.