@negeji8010 yeah I hear yeah.. oh btw IT make this nonsense work.. Yeah we didn't bother to ask you if we "could" do such a thing - just make it work!

To make it work.. You will need to nat them, and will need different natting devices.. The "cheapest" way to do it is find some small little router.. Some little travel router or soho router going to be the easy cheapest solution. Sure you could do it as vm, etc. But that is going to cost more for sure.. Unless you have something laying around to use as the host were you could run multiple natting something - wouldn't have to be pfsense doing the natting.

If you go the soho or travel router I would make sure it runs some 3rd party firmware (openwrt for example) vs native like linksys or netgear router OS.. Maybe tiny router from Mikrotik, they have something like the hex lite for like $40 that can be powered via poe, etc.