Nat issues with Starlink and Google nest pro wifi

[Deuces56]

I have Starlink and am using my nest pro wifi as my routers but I'm having issues where my Nat type is always moderate. Trying to figure out what I need to do to fix this

[MichaelP]

Hello @Deuces56 

The Nest WiFi Pro primary unit is a NAT firewall + router. I believe the Starlink system is also a NAT firewall + router. So, you have double NAT by default. It looks like Starlink can be put in bridge mode, which should help.

[Deuces56]

I've already put my Starlink in bypass mode and still having the nat issue. Is there a set up order that I should do in order to properly set it up?

[MichaelP]

I'm not a Starlink expert by any means, but from what I read, "bypass" mode is not the same as "bridge" mode. I believe the Starlink system will need to be in "bridge" mode to eliminate double-NAT.

[Deuces56]

According to Google when it comes to this both modes have the same function 

[MichaelP]

Sorry – as I said, I'm not a Starlink expert. But, I did some more reading today, and it sounds like Starlink uses "Carrier Grade NAT" (CGNAT) inside their network in addition to the NAT performed by the Starlink router. Adding another layer of NAT provided by the Nest WiFi Pro leaves you with triple NAT. Enabling bypass mode in your Starlink router would only get you down to double NAT. If you want to eliminate the CGNAT, you'd need to switch from "default" to "public" IP Policy – I found more information about that here: https://www.starlink.com/support/article/1192f3ef-2a17-31d9-261a-a59d215629f4 

But, we're well outside the realm of Nest WiFi configuration here – this is all Starlink stuff that would apply to any WiFi solution.

[Deuces56]

I was able to fix my issue by factory resetting my network and configuring the star link device then re-setting up my nest devices as new devices then flushing and changing my DNS settings, and port forwarding