Dynamic IPs routed to pfsense

[twistedstorm]

So I am trying to put all the pieces together my ISP(charter communications) assigned me 3 dynamic ips which id like to map dynamically to my box. what is the process to get 3 dynamic ips set up and running on the box.

I tried running a cable from one port on the 4port isp provided modem SMC D3GN2 modem to an additional network card on the pfsense box believing that an ip would be assigned dynamically by the ISP but I couldn,t get that to work any suggestions would be greatly appreciated.

when I had static ip address it was easy to map a subnet of them to the wan card now its a little more tricky

[SeventhSon]

@twistedstorm:

I tried running a cable from one port on the 4port isp provided modem SMC D3GN2 modem to an additional network card on the pfsense box believing that an ip would be assigned dynamically by the ISP but I couldn,t get that to work

That won't work, because you would end up with the same subnet on 2 interfaces.
But if they're dynamic, why would you need all 3 of them anyway?