Hello,
We are setting-up a WISP network and have some issues with public IP's.
We have a Cisco Catalyst 6504 on a DataCenter with our own /22 public subnet. From there we have fiber connections to different locations like a telecomtower with PtP connections to the poles with antenna's to the end-users. And yes, it's allllll ubiquiti stuff 
.
When whe connect a router on the fiber from the Telecomtower we have a nice 1Gbit connection and connect a ERL with a public IP on the WAN. On the lan we have a local address with no DHCP but with a configured PPPoE server. The customers have a AVM FritzBox router and all works well. The customer have its own public IP on the WAN interface of the FritzBox assigned by the PPPoE server.
But... When I connect to the internet and take a look on whatismyip-sites I see the public IP of the ERL and not the public IP of the FritzBox router.
What I'm doing wrong or which config changes can I made to let it work well?
Thanks!