Ask Wesley to reconfigure your radio to run as a wireless bridge with an internal IP address on his network and to give you the PPPOE details for your account. Then put the PPPOE onto the WAN of your pfSense box.
Before you commission the pfSense box, have a look at OPNsense...
We have many of those specific Ubiquiti radios attached to micropops. None of then run PPPOE / have public IP addresses for the following reasons.
- Firstly, the little processors on those radios aren't exactly high end ARMs. The radios struggle, even when the connection is 20Mb.
- More importantly, we've found that undesireables are attracted to Ubiquiti devices with public IP addresses like moths to flames. We therefore have a policy where all the Ubiquiti devices have 192.168 addresses and run as dumb bridges, with proper routers or firewalls doing the work behind them.
It's all well and fine for a WISP to pop these radios up with a PPPOE and save quite a lot of money in the process, but those savings are wiped out as soon as your techs have to visit a couple of thousand homes and businesses to reprogram the radios after a worm gets into one and burrows through the network, infection one radio after another.
https://www.symantec.com/connect/blogs/thousands-ubiquiti-airos-routers-hit-worm-attacks
Even today, there are radios in the wild that haven't been patched.