TCP connection closed state ideltime keeping going increment

[Vengoal Chang <vengoal@xxxxxxxxxxx>]

Hi,
   I use netstat option got the following :

RMTADR           RmtPort    LocalPort  Ideltime   Satte
172.16.1.37      2222       21402      004:45:17  Closed
172.16.1.37      2222       21404      004:44:47  Closed
172.16.1.37      2222       21406      004:44:17  Closed
172.16.1.37      2222       21408      004:43:47  Closed
172.16.1.37      2222       21410      004:43:17  Closed

My question is why the system is not clear the closed state connection 
entry ?
When the connection to remote host failed, the CL will retry call socket 
pgm again, so
every time failed the list will add one more closed state entry. But I 
thought system should clear it after the connection colsed.
I know when the job end, all aboved closed state entry will be cleared. 
If job keep trying, the list is more and more.
Does any method to clear it when job is retrying ?

Best regards,

Vengoal