Freeradius accounting issues

[Siryx XL]

Hi everyone.

I got freeradius to AAA the access to a Cisco Routers.

If for some reason you disconnect because the router power off, an accounting finish packets is not sent to my radius, so in the DB looks like the user is still logged in....

an example:

mysql> select radacctid,username,acctstarttime,acctstoptime from radacct where username = "jhon.doe" and acctstarttime > "2010-08-05 07:45:30";
+-----------+-----------------+----------------------+-------------------------+
| radacctid  | username  | acctstarttime             | acctstoptime    |
+----------- +-----------------+---------------------+-------------------------+
|     93760   | jhon.doe     | 2010-08-05 07:45:31 | NULL                | 
|     93761   | jhon.doe     | 2010-08-05 07:45:50 | NULL                | 
|     93762   | jhon.doe     | 2010-08-05 07:52:23 | NULL                | 



What can I do to update this entries after a certain time has pass, or do something else so fix those entries? 

Thanks in advance.
 		 	   		  
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