XER10 - Bridge Mode

I was recently upgraded to a new modem/router combo (XER10) from the XB7-T. I am a power user and use a UniFi Dream Machine Pro to do all of my network's routing, The XB7-T allowed me to use bridge mode and let my router handle all of the routing throughout the house. With this new XER10, I don't even have an option for Bridge mode at all. I operate a server and connect to my router with VPN very frequently and I CANNOT have a double NAT. My UDM Pro is more than sufficient to handle the network speeds, and has 10Gig NICs as well. If I can register it's MAC and use that I would be much happier and I will gladly send back the equipment, but otherwise I will need a version of your equipment that I can enable Bridge Mode.