Multiple unknow devices connects to my Google Nest WiFi

[staalhermo]

A few days ago I startet to get message from the app that there was a number of unknown devices that had connected to my network. This  message keeps comming everyday since. I checked the devices and none of them has an IP and they all have uniqe MAC-adresses. 

My setup consist of two routers where only one (the main one) is in NAT and the other is setup with a cable for backhauling. There is also two other WiFi points. The main router is also connected to a switch that is connected to various PC's, and two other switches in the house. The other router is connected to one of those switches.

According to the app all those unknown devicest has a "unspecfied" connection and it is connected to the main Google Nest router. 

Anyone had this problem or know what it could be?

[Dorothy]

Thanks a lot for the info, it was very helpful

[Денис25]

Подскажите разрешилась ли у вас эта ситуация?

[EdwardT]

Hi folks,

Thanks for reaching out. I'm sorry to hear that you're having an issue with your Google WiFi. I'd love to know more about this, and I have a few questions:

• Are the unknown devices showing up on your Google Home app?
• Have you tried blocking the unknown devices?

You can also click on this link for some troubleshooting steps you could try.

Thanks,

Edward

[staalhermo]

Yes they show up on the Google app. I can not block them. 

[EdwardT]

Hi staalhermo,

Thanks for the reply. Just to isolate the issue, could you try pausing the devices and check if any of your devices would lose connection? You could click on this link to learn more about this.

Thanks,

Edward

[staalhermo]

Sorry, but they are all offline and cannot be paused

[Jeff]

Hi, staalhermo.

The unknown connected device thing has been going on for a little while. Other users have been seeing it as well. There are several reasons why you might be seeing this, the most common is that some devices don't use the same MAC address each time they connect. These devices, usually mobile devices, will use MAC randomization and it will create all kinds of "unknown" devices or long device history lists on your network. Only devices that have your network name and password will ever connect, but sometimes they will list differently than expected. If you are concerned about your network security, changing the password would clear out any connections you're unsure of, but you would need to set up each device with the new password again.

Let me know if you have any other questions or need some additional clarification.

Thanks.

[staalhermo]

Hi,

I have changed the SSID and the SSID password, and they still keep showing up. Its ALOT of them!

[Jeff]

There's still no way to find out what's causing them, right? I'm not sure, but I'm assuming the issue could be the MAC randomization. I know we don't want to call it resolved on an assumption, so I'll keep looking into things until we can know better what might be happening.

Thanks.

[Jeff]

Hi, staalhermo.

I just wanted to check back in with you here and see if you're still seeing this happen and to find out if it's been consistent, random, or if it's reduced over time. Let me know if you have seen any changes or if it's stopped happening.

Thanks.

[Jeff]

Hi, staalhermo.
I just wanted to check in real fast to see if you saw my reply and to find out if you still needed any help on this. If you're still needing assistance, please just let me know and I'll be happy to continue helping.
Thanks.

[Jeff]

Hi, everyone.
Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.
Thanks.

[Jeff]

Hi, everyone.
As we haven't had any activity here recently I'm going to go ahead and close the thread. If you have more to add, feel free to start a new discussion.
Thanks