Fiber Optic ONT to xfi Gateway bridge mode not available

Hi there,

For those who have this type of setup, ONT box > xfi Gateway > to my own Unifi router what will be the best option to deal with this double NAT as bridge mode cannot be activated on the modem/router? Even advance setting to do port forwarding has to be done on the xfinity app and not normally on the router address 10.0.0.1. bummer.

Does this xfi gateway has an IP Passthrough option? Cant find it.

Can I connect directly to the ONT box to my Unifi gateway and bypass the [Edited: "Language"] xfi router?

As of now Im using DMZ option to redirect traffic to my unifi ip but it doesn't work.

Thanks