Arris Arris NVG599: nat type strict

Check this link for a possible solution:
https://support.xbox.com/en-US/xbox-one/networking/nat-error-solution

If you can't find it contact your ISP

So after my Xbox had its latest update. Now in my network settings it connects but under NAT type it say UPNP not successful. I constantly have to go offline thwn back online for Xbox to connect to internet but it is now saying about the upnp all the time.
What can i do

Hello there lovestheganja28!

If you have tried the previously posted troubleshooting steps, then can I ask, how are you connected?

Wired or wirelessly?

Does it recognize that your network is set up at all?

If it does, what happens when you go to Network Settings and test your Multiplayer Connection?

If the previously posted steps didn't help, then I would try referring to our guide entitled ”I get an error message when I run
the ‘Test multiplayer connection’ on Xbox One” and/or make sure that your network is setup the way it's outlined on our support page

Network settings on Xbox One.

Give that information a look through and let us know how that helped with the issue you're dealing with.

Thanks!

Connection test works. It's connected fine. Then I go to multiplayer test and get an error "Can't get Teredo IP address"

Details as to my config.

Cable goes to Arris modem.

Arris modem is set to bridge mode.

Arris modem connected via ethernet to Apple airport extreme, which acts as wifi router for my house.

airport extreme ALSO has an ethernet cable connected directly to the xbox one.

But I'm still getting strict nat.

Plus the "can't get teredo IP" error.

if you plug directly into the arris MODEM (not the trendnet) and restart the modem and xbox and still have strict NAT then its your isp or whatever device the apartment complex has....most likely , private ip...