PPPoE interface 1:1 NAT to local computer

[JensSterckx]

Hello,

I'm trying to map a specific local computer's ip to a PPPoE session on the PfSense box.
PfSense is able to log in into my ISP's PPoE server, receives a dynamic public ip (By DHCP), now I've tried several guides but all of them require a Static Public IP from the ISP.

Diagram to clear it up:

Do I need to use Virtual IP's? Since I don't know what IP my ISP will give.

I want that the computer is only using the PPPoE IP as it's external IP. (Thought NAT would be the solution, but having problems configuring it.)

Hope my problem is clear.

Kind regards,
Jens Sterckx