netstat or ss show an ESTAB/ESTABLISHED TCP connection with "-" (no PID owner)

Solution Unverified - Updated -

Issue

  • netstat or ss show an ESTAB/ESTABLISHED TCP connection with - (no PID owner)
$ egrep "9001.*ESTAB" sos_commands/networking/netstat_-W_-neopa | head -5
 tcp6     747      0 10.0.0.127:9001      x.x.x.x:28493     ESTABLISHED 0          0          -
 tcp6    2628      0 10.0.0.127:9001      x.x.x.x:51193     ESTABLISHED 0          0          -
 tcp6     620      0 10.0.0.127:9001      x.x.x.x:63717     ESTABLISHED 0          0          -
 tcp6     717      0 10.0.0.127:9001      x.x.x.x:41327     ESTABLISHED 0          0          -
 tcp6    1160      0 10.0.0.127:9001      x.x.x.x:19313     ESTABLISHED 0          0          -

Netid  State      Recv-Q Send-Q Local Address:Port               Peer Address:Port              
 tcp    ESTAB      531    0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:13249               <->
 tcp    ESTAB      5498   0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:31955               <->
 tcp    ESTAB      22     0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:50966               <->
 tcp    ESTAB      1934   0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:1532                <->
 tcp    ESTAB      1937   0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:1765                <->
 tcp    ESTAB      4276   0      ::ffff:10.0.0.127:9001               ::ffff:x.x.x.x:36817               <->

Environment

  • Red Hat Enterprise Linux
  • TCP (Transmission Control Protocol)

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