Problem - Duplicating IPs

[Marcelo Santoro]

Hi Friends…

I am facing a problem here in my ISP.

I have radippool configured in my freeradius 3.0.6 server and some times my customers are receiving Duplicated IP address,

Example 1:
==================
Customer: login1
IP 186.227.32.1 
NAS: 1
Service: pppoe

Customer: login2
IP: 186.227.32.1
NAS: 2
Service: pppoe
==================



Example 2:
==================
Customer: login1
IP 186.227.32.1 
NAS: 1
Service: pppoe

Customer: login2
IP: 186.227.32.1
NAS: 1
Service: hotspot
==================



Example 3:
==================
Customer: login1
IP 186.227.32.1 
NAS: 1
Service: hotspot

Customer: login2
IP: 186.227.32.1
NAS: 2
Service: pppoe
==================


This is what i detected …. but i don`t know how to solve that problem.


To fix fast… i created a php script that connect in my Mikrotik Routers and look for logins with duplicated IPs and disconnect these customers in case they exist.

But i have a delay of 3 minutes between checks, and while they are connected i have a “loop” in my network.


Please friends… how can i fix it ? Is there any configuration to be made in radippool configuration ?


Thank you friends.

Best Regards.