Google's Chromecast and Home devices can cause temporary Wi-Fi outages, here's why [Update]
How to Change Your Chromecast to a New Wi-Fi Network
Solved: Chromecast requires to disable AP isolation on my Huawei Home Gateway HG630 - TPG Community
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Chromecast connected to wifi, but not interacting with devices - Tech Forum
Google Nest on Twitter: "@willowspuppy You'll see your Chromecast on your Network if it's not set up. Since you were able to cast your Netflix app, your device is working as intended.