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Chromecast connects several times with different MAC's

MarcusR
Community Member

I have found that our chromecasts connects several times to the router. Same IP-address but with different MAC-addresses. It can connect up to 10-15 times over a day.

I have no other issues with the network at home.

 

6 REPLIES 6

djtetei
Silver Product Expert
Silver Product Expert

Your Chromecast device cannot have more than two Mac addresses (one for LAN and one for WAN).

MarcusR
Community Member

I know. Thats what bothers me.

In the Router log I can see the same IP-adress 192.***.***.248, but with several different macaddresses.

djtetei
Silver Product Expert
Silver Product Expert

Are you shure there are no intruders on your network?

MarcusR
Community Member

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)

Jeran
Community Specialist
Community Specialist

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.

 

Best regards,

Jeran

MarcusR
Community Member

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..