I have a rb450 → captive portal → cable modem
Rb450 serves dhcp 192.168.205.1-254 wan port 192.168.10.9
Captive portal 192.168.10.8 wan port public ip
When a client connects the captive portal sees the 192.168.10.9 address and mac of router.
First person logs in and everyone after gets a free ride.
How can I setup the rb450 so that the captive portal gets a unique identifier for every client?