Since I updated my U1 to firmware 1.4.0 I recognized some strange things happening in my network:
Environment: FritzBox 7530 FW 8.25. 2x TPLink AX55 as AP
Several time per day my network got unusable slow - so I took a closer look:
I saw constant internal traffic up to ~5MBit/sec, which I never recognized before.
I used Wireshark to find out more about it and saw several of my Amazon Echos (Dot3, Dot4, Echo4, Pop) sending hundreds of broadcasts per second, which completely jammed my network.
This happens several times per day and I cannot see a reproducible reason.
My solution is to disconnect the Echo from power, or reboot it from the Amazon App.
Example (U1-81100260116000478PW7 is my Snapmaker U1. The IP is assigned by the FritzBox - DHCP reseved.):
4664 4.290846 192.168.178.167 224.0.0.251 MDNS 89 Standard query 0x0000 AAAA U1-81100260116000478PW7.local, “QM” question
4665 4.290846 fe80::76d4:23ff:fe0f:6680 ff02::fb MDNS 109 Standard query 0x0000 AAAA U1-81100260116000478PW7.local, “QM” question
Has anybody seen this before, or maybe a solution for this?
Thanks, Stefan
How sure are you this only started with 1.4.0 and wasn’t there before but you didn’t notice?
If you disconnect the U1 from your network during one of these “storms”, does the traffic stop?
You imply rebooting an Echo stops the traffic – how long for? You listed for Echoes, so is only one participating at once?
I have no idea what that Wireshark snippet is saying, put personally I wouldn’t have one of those spyware devices (Echoes) on my network! If you must, how about isolating them on a separate subnet.
No, I’m not sure, that it really started with 1.4.0 - I only recognized the problem some hours after I did the update. I’m not even sure, that the root cause is the U1, as the information you get from Amazon is not very detailed. Network Configuration options for both products are limited - so at the moment I’m only trying to find out what’s going on in my network.
If I make the U1 powerless, the broadcast traffic stops “a while” later. Sorry - I cannot be more specific, I only tried this one time.
Rebooting / power cycling an Echo stops these broadcast for a minimum of ~30 min, but it may also take hours until the device starts broadcasting again - as far as I recognized it for now.
No, not limited to one device - when I diged deeper into this, I had 5 Echos screaming into the network.
Simplified translation of the snippet: “U1-81100260116000478PW7.local - tell me your IPv6 address”.
Yes, I would like to isolate them in a dedicated subnet, but I would have to replace my current (WiFi) equipment - not a short term solution…
It seems to me the Echoes have spotted a device on the network and are bombing it with requests to identify itself, but it’s not responding. Enough reason not to have Echoes on anything but a firewalled separate network!