Realtek device keeps appearing in notifications, but can't identify.
I've recently been getting notifications of a "Realtek Semiconductor Corps" device joining the network. This can happen up to 3 times a day, and I cannot identify the actual device (I've given all my others friendly names).
The really odd thing is that the mac address changes every time the device connects, so I can't block it. Also worth noting that it doesn't use much bandwidth at all, so I can only think that it must be a smart home device.
Has anyone else experienced this issue?
My guess, based on it being a Realtek network card, is that it’s a Windows 10 computer with MAC randomization enabled, which will make eero think it’s a new device each time. Check out this link for more info: https://www.mathyvanhoef.com/2016/03/how-mac-address-randomization-works-on.html?m=1
Many thanks for the replies!
I did manage to narrow it down in the end as I have 3 eero’s and I knew which one it was connected to. I’d also named the majority of the devices attached (quite scary to see exactly how many devices there are!).
As it turns out, it was a set of WiFi LED lights that were causing the issue. For some reason the unit kept power cycling, and every time it rebooted, the MAC address changed (never, ever seen this before). I replaced the module and the problem has now been resolved.
just to say, the eero units are brilliant! My internet connection has never been so fast and stable, and I love the ability to name the devices and organise them.