I have a few Chromecast with Google TVs in the house, all of which have the ethernet adapter and are plugged into my LAN.
Before, with a random collection of routers/access points, never had a problem with wired ethernet connection to the Chromecasts.
After switching the house to Nest WiFi Pros, there are times when a Chromecast boots up, it will "lose" the wired ethernet connection - the network screen will say ethernet not found - and then upon rebooting the Chromecast, it picks up wired ethernet just fine and works until it decides to "lose" the ethernet connection again (which might be another week, say).
No issues with any other devices connected via wired ethernet.
Any ideas? Any settings that the Chromecast likes to have on wired ethernet that I may have set wrong on my Nest WiFi Pros?
Thanks for posting and sorry for the delay.
I just wanted to jump in and let you know that a new firmware release is out now to Nest Wifi Pro devices (1.63.324946). You won't need to do anything to receive the update and it will install automatically once it's available for your hardware. There are a variety of performance updates and bug fixes in the release, so I'm hoping this clears up the issues you're seeing here. Let me know if you have any questions about the update.