My Xbox will not connect to in my DHCP server

I had to use a static IP-address on the xbox for the connection with the LTE Box B1000, because there DHCP was disabled. On my Sharing Dock R101 I used automatic mode, because I'm using the integrated DHCP server.

I've tried putting the xbox into DMZ on the Sharing Dock but the result was the same. No internet connection.

It says,"Can't connect to your DHCP server" I have accessed my gateway to make sure DHCP is enabled and that the Xbox Mac address is not being filtered out by the gateway. The Xbox will connect using WPA2 encryption but Nintendo will not and according to my research Nintendo doesn't build their equipment to connect using WPA2 encryption. Basically if the Xbox is connected then the Nintendo will not and vice versa. When I got the xbox it did connect using WEP encryption so if I can get it back that way it would be better for me.

It says cannot connect to your dhcp server. I checked through my router and the router recognises that the xbox is connected to it and it's also not filtering out the consoles MAC address. It was working fine until last night.

Xbox now using wired connection and now message says cannot connect to your dhcp server ??????

The address of 169.xxx.xxx is an APIPA address which means your Xbox is not finding the DHCP server.

"XBox(s) do not attempt to obtain a dynamic IP address until I test the XBox Live connection, until I test they attempt to use a sell assigend 169.xxx.xxx.1-which is way out of my subnet of 172.16.0/24-with no subnet mask, gateway, or DNS."

What is your IP address range? When you test Xbox live connection dose it connect? If so dose it appear in the DHCP on the Windows Server?