Pretty sure. I check in on our main-router each day, its always updated and I also have wireshark to look at traffic if I want to. We have 6 routers all in all, but the other 5 are all set in AP mode (cable connected - none is on wireless AP).
I cant see any suspicious traffic from the two chromcasts we have in the network either.
I reboot the mainrouter once every day (automatically) and manually from time to time when I see this issue. I don't have the multiple mac address on a single IP for anything else than the two chromecasts (one attached on the WLAN from the main router, the other one is on an AP)
Hey there MarcusR,
That is strange, djtetei is correct that the Chromecast cannot have multiple MAC addresses. Would you be able to perform a factory reset on the device, and see if the issue still persists?
If the issue does persist after a factory reset, we can take further steps.
Yeah, I got a CNE so I find the Mac address very strange I've sent router logs to the manufacturer but det could not see anything from the router perspective.
I did a reset a while ago, but same thing. Thing is that the duplicate MAC addresses doesn't happen all the time, i.e the problem is Intermetent. We hardly use that Chromecast unit so I am thinking of just ditching it. But it's annoying that I can't figure out why..