Proxmox and PFsense Wan Public IP

[jatopshotta20]

Hey guys I have read all I could and have not found any answers, So I was wondering if anyone had an Idea. Here is my setup

Comcast ISP –->Proxmox eth1-vmbr1 WAN bridged ---- eth2 vmbr2 LAN Bridge 192.168.5.1/24 ----------> switch--- Rest of machines
S/N vmbr0 aka eth0 is managment interface I use a crossover cable to console.

My issue is that comocast modem issues DHCP public IP so you only get 1 so how do we bind this to Pfsense re0 (vmbr1) interface for WAN Internet IP for virtualization.