NAT type won't open

okay so my NAT Type has been strict ever since i got my Xbox one and i have tried to fix it but it only stays open for an hour before switching back to strict. I have tried port-forwarding all xbox ports that xbox requires PLUS the 3075 port that CoD requires
with UpNP on and off and DMZ off doesn't work, i have also tried setting my Xbox to DMZ with UpNP on and off With no ports opened and ports not opened. I have tried them all with a static IP and normal IP as well still didnt work. When i go into detailed network
statistics i get a status code: 0x0000000042000064 and NAT info saying "Your network is behind a port-preserving port-symmetric NAT."

Please help...

:)

 

NAT Problems

I have a NAT Setting on my router but it is set to on? When I have it on automatic my NAT type stays open. I don't know why DMZ won't keep my NAT type open.

 

nat type won't stay on open

I have been having problems with nat now for a week I have tried the troubleshooting steps but nothing worked I also contacted my ISP and they sent me out a new router but still having nat problems.

my ISP is SKY my router is a black SKY HUB

Here is a list of steps I have tried so far to get my nat open:

port forwarding

test multiplayer connection and hold down RT,LT,RB.LB

Turn off x1 and unplug the x1 and router for 2mins then go to network settings, advance settings, alternate mac address and clear*

restore to factory settings

I also have my xbox in the DMZ on my router

*This method sometimes works it open my nat but if I turn off my x1 then turn it back on my nat is either moderate or strict again and I have to turn off x1 and router every time i turn on x1.

I first noticed my nat was strict when I started playing the new ghost recon closed beta since then I have been having problems also I am part of the insider program that is testing the dashboard