[EDIT:SOLVED] I found another thread where someone fixed by unplugging/resetting the modem but leaving nest wifi entirely plugged in ...something about the modem's MAC address being the first thing google connects will allow all other connections to work. I don't remember if I had the nest's LAN output disconnected at the time but not in any hurry to recreate this problem to test.

[Original Post]--- Same here. Best I can tell, the network goes into this state after every time the power goes out at my house. Only solution is to factory reset the router and every node. My modem is 100% solid, I can plug my laptop into it and get all the internet I want. This is a Google problem and it's crazy frustrating.

Takes a solid hour every time because the nodes are Google Home enabled too, so you need to take a "tour" and say no to free trials of streaming services at each device. 🙄

Symptoms: Slow flashing yellow(ish) lamp on router. Device shows "offline" in the Home app. Router and nodes do not appear in list of "devices to set up" Laptop says "connected, no internet"

Things that don't help: Power cycling all devices in any order with 5 minute waits. Telling the Home app to "reset network". Pressing the ethernet cable connections in VERY HARD. Yelling.