Nighthawk RAX80 Ethernet Not Working

[HelpWithThis]

Hi,

I have a netgear nighthawk RAX80 and I have an audio reciever (a marantz SR6008) and its connected via ethernet to the router. However, it's not getting a connection. When I run the test I get an error that says "No internet connection check your routers settings" but I have no idea which settings it could be. It shows a diagram with the reciever connected to the router via ethernet which is marked with a green check, and then the router connected to the internet which has a red x. So my question for you is can you think of any settings that would be blocking this on the config page? The device has a MAC address and an IP address so I'm almost 100% it's not the device 

FIRMWARE: V1.0.1.70_1.0.30

[plemans]

What modem are you connected to?

[HelpWithThis]

It's an xfinity dual band wifi 802.11ac

[plemans]

so you're in a double nat? 

https://kb.netgear.com/30186/What-is-Double-NAT

https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT

[michaelkenward]

---

@HelpWithThis wrote:

It's an xfinity dual band wifi 802.11ac

---

That's a wifi specification, not a model number.

As @plemans says, this would make it a modem/router.

How you fix the problem depends on whether you want to disable the router bit of the unnamed modem/router or the RAX80.

There are other options, but they are the easiest.