Nest WiFi pro overriding ISP router settings

[Robdwoods]

I found through a very long call with my ISP that the nest pro is overriding the name and password of my router from my ISP. Even after a factory reset the WiFi network for the router appears but after 10 minutes the Nest has overridden it and changed the name of the network and the password to match that of the Nest. Is there anyway to stop this? I had no idea the Nest could take over my main router and treat it like another node connected to the main Nest. 

[PatrickP_Viking · Accepted solution]

Hey @Robdwoods .

The issue is that you appear to have two routers providing routing and connections which is creating a Double NAT. Please refer to the below article:

Fix Double NAT when two routers run at the same time 

Let me know if this resolves the issue or if you need further assistance.