Hi, Af far as I see when a client gets an IP from pool an entry is created in radippool table: mysql> select * from radippool where expiry_time>now() ; +-----+------------+-----------------+---------------+-----------------+------------------+---------------------+----------+-----------+ | id | pool_name | FramedIPAddress | NASIPAddress | CalledStationId | CallingStationID | expiry_time | username | pool_key | +-----+------------+-----------------+---------------+-----------------+------------------+---------------------+----------+-----------+ | 60 | pool | 1.2.3.4 | 10.0.0.1 | | aadadasdadadaa | 2009-07-10 18:57:52 | user1 | 13242346536 In sqlippool.conf we define lease_time as 3600 seconds. I want to ask what happens after 3600 seconds. I can see that the ip is still in radippool table but date is earlier from now. Does radiusd sends a packet back to NAS so client re-requests a new IP without a traffic disruption ? Or what happens? Regards.