A new device has joined your network - dozens of times every day

[quirkius]

I have been getting this message dozens of times every day for the last 3 weeks. I always try to check immediately and what I then see if that whatever device that is/was, is offline. Never the same MAC address. Can happen seconds apart or hours apart. I have a mesh network; router and three other points. It's always connecting to the router point. Could this be related to the recent firmware update?

[olavrb]

One reason for the ever growing list of unknown devices could be MAC randomization, a privacy feature built in to most OS-es to make devices harder to track across networks.

• Apple: [1] https://support.apple.com/en-us/guide/security/secb9cb3140c/web, [2] https://support.apple.com/en-us/HT211227
• Google / Android: https://source.android.com/docs/core/connect/wifi-mac-randomization-behavior
• Microsoft Windows: https://support.microsoft.com/en-us/windows/ac58de34-35fc-31ff-c650-823fc48eb1bc

It can help to make sure this is disabled for all devices connected to your Nest Wifi network.