I have my user manager running on a machine here at my data center and hotspots being installed at hotels around town. The hotels have internet via cable and get dhcp addresses. How should I get my radius to accept the new IP’s
I was thinking of dyndns, but the router field only accepts IP.
I decided to make a tunnel interface for each. Seems a waste of resources.
But how did you do it, the ipip interface for the remote address does not accept netmask either, just IP addresses
Hello fren, . . . . 
you can make any config as routing and Centralized AAA [User Manger] with same machine without any tunneling.
and Transparant Networks is must.
regards
Hasbullah.com
Very interesting, but how do you achieve this?
The problem has already been discussed, but I am facing it right now:
My UserManager has a fixed IP, not all the hotspots have it.
So, if you found a way to make the dynamic IPs hotspots to be recognised as routers in the UserManager, share it in detail and you will win a monument on the central plaza of the village where I live and my lifelong gratefulness 
what about a script that resolves the DNS name and updates the configuration appropriately?
I am so poor in ROS scripting that I can turn an rb532 into a coffe machine just unwillingly… Could someone help? the hostpots hardware are RB150s
Thank you
back to the original idea of tunnels. Use tunneling (pptp, l2tp, or ipip) and connect them all.
central - radius: 10.0.0.1
hotspot 1: 10.0.0.2
hotspot 2: 10.0.0.3
hotspot 3: 10.0.0.4
each hotspot will point to radius at 10.0.0.1.
hotspot will see connections coming from 10.0.0.2-4.
You want to use encryption because your radius secret is being passed across the internet in plain text otherwise.
Sam
Thanks Sam, this was the solution I already thought of, but when you create a new pptp, l2tp, or ipip interface, you are always asked to give the “real” remote IP address.
So if I have let say the radius at 194.116.1.1
Hotspot1 with a dyn IP
Hotspot2 antoher dyn IP etc
how can I say to the radius to create a new interface WITHOUT knowing the public IP of the hotspot aka the remote IP?
Thank you