Cannot get NAT open on XBOX ONE; stuck on strict.

@zanswerlive - My concern is why this person has two different public IP's on the same interface, when there should only be one. Whichever machine he/she connects to the LAN interface on this modem, it should only be carried by one public IP, regardless
if this is static, or dynamic learned.

When you run the bitwise AND operation, the IP address 100.76.xx.xx correspond to the allocated block 100.64.0.0/10 for use in carrier grade NAT. So, this person still has the NAT'd address assigned.

saywhattowhom, huh, I do not have any new thoughts, maybe taidara can offer something.

saywhattowhom, if You not use any login or password to connect to You ISP, then You got DHCP configuration.

My first question here, is what IP address Your Xbox One get if You connect it to Your modem directly? Without configuring it manually, can You copy it, just two octets as always?

Ok, You got public IP address, it's nice.

I got ya.

Nice work, now we know, that this happened after ISP change something, did they give You a new modem?

I am not entirely sure, but I am pretty sure it is DHCP. I am not too familiar with VPN, if you excuse me so it is hard for me to answer this 100% correctly. I will say this, though. In order to make it have an open nat when I first connected straight into
the modem, I had to manually configure the IP of the xbox so the xbox had the same IP address as my public ip address because for some reason, the xbox would have a different ip address than the public ip address when it did it automatically, which caused
it to go strict.

My ip address is 198.16.xx.xx

My wan port configuration is dynamic. Right now my xbox one is connecting wirelessly to my router, but i have tried wired as well with no luck. The router is connected to the modem.

A long time ago, my router would give my xbox an open nat. However, when my internet company got bought out by another internet company and then they updated the internet (and I am guessing the firmware for the modem), but xbox would get strict nat even
when connected directly to modem. I had to get it arranged with my isp to get a static public ip address since it used to be a private ip address.

Question still not answered. Bump