sqlippool error

[Deep Purple]

Hello 
Please Help me
sqlippool error 
select FramedIPAddress,NASIPAddress,CallingStationID,username from radippool;
FramedIPAddress| NASIPAddress | CallingStationID | username 
172.16.2.1         | 127.0.0.1          | 121.111.111.123 |  user1
172.16.2.2         | 127.0.0.1          | 121.111.111.123 |  user2
172.16.2.3         | empty               | empty                |  user6   
radwho
Login      Name              What  TTY  When      From      Location
user1      user1             PPP   S0   Sat 12:47 127.0.0.1 172.16.2.1
user2      user2             PPP   S1   Wed 10:05 127.0.0.1 172.16.2.2
user3      user3             PPP   S2   Sun 17:42 127.0.0.1 172.16.2.3  ==> long time connecting


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