https://www.theregister.com/2025/06/06/on_call/
… Geoffrey had a hunch that the access control system vendor shipped pre-configured bridges, usually with the same SSID and password. A little testing proved his hypothesis: the bridges on the roof both shared a name and password. After the accident in the carpark they’d dropped the connection to the Wi-Fi kit down there and connected to each other. The resulting loop flooded the network and caused the access system issues. …
Networking PTSD rising… rising… rising…
Regards