Google Home and Chromecast devices are causing Wi-Fi problems


As explained by the TP-Link engineers in an FAQ listing, the issue exists due to multicast DNS (MDNS) packets that are broadcast through Google Chromecast and Home in a large amount, at a very high speed in a short amount of time. Users with routers made by ASUS, Linksys, Netgear, TP-Link, and Synology all report that Google's Cast software is causing network disconnections on their devices. The issue affects several different router models and seems to be related to the way Google's devices cast content. However, it has now emerged the issue is affecting more Google products and other firms' routers. They said, "This occurs when the device is awakened from the "sleep mode" and could exceed more than 100,000 packets in a short amount of time". In recent Android updates, though, that timing may have slowed as apps or devices are pushed into a sleep mode. This can cause some of a router's main features, such as wireless connectivity, to stop working. In fact, TP-Link has released a fix, but some users are reporting there is still a problem.

If you don't have any Google Home or Chromecast products in your home, you don't have to worry about this. "Both of these firmwares will eventually make their way to our update servers for regular download, however [we] decided that a month of this issue is long enough for us to post this for all of you that have been following this in the community to download and use while we go through our final QA checks that are required before putting it on the update server", Linksys said. Because of this, many routers will simply shut down the connection either to the internet or to the device's they are connected to. Netgear has released a beta version of a firmware fix but only for its mesh-networking Orbi routers. You can also try disabling the Cast feature on your devices to help mitigate the issue.

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If left alone long enough, TP-Link warned, the burst will fill up the router's memory and leave a reboot the only option to restore connectivity.

Some users confirm that the patch solves their issues, while others continue to experience the same symptoms. But then I got back from the week in Vegas and noticed that my phone (Pixel 2 XL) was constantly dropping a data connection even when showing that it was connected to WiFi or cutting straight to LTE before going back.