Why are the SCTP sockets in CLOSE state even after the terminating the application in Red Hat Enterprise Linux 6.1 and earlier?

Solution Verified - Updated -

Issue

  • Why are the SCTP sockets in CLOSE state even after the terminating the application? Applications were terminated using kill -9.
  • netstat shows data in the Recv-Q:
Proto Recv-Q Send-Q Local Address  Foreign Address          State      
sctp  124950 309593 X.X.X.X:4448     X.X.X.X:57998          CLOSE
sctp    3368 602439 X.X.X.X:4442     X.X.X.X:55461          CLOSE
sctp       0      0 X.X.X.X:4444     X.X.X.X:56923          CLOSE
sctp       0      0 X.X.X.X:4446     X.X.X.X:56410          CLOSE

Environment

  • Red Hat Enterprise Linux 6.1 and earlier
  • SCTP (Streaming Control Transmission Protocol)

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