TIME_WAIT sockets are not reused with tw_reuse parameter after RHEL 7.6

Solution Verified - Updated -

Issue

  • TIME_WAIT sockets are not reused with tw_reuse parameter after RHEL 7.6
  • Outgoing TIMEWAIT reuse fails after setting net.ipv4.tcp_tw_reuse = 1 kernel tunable

Environment

  • Red Hat Enterprise Linux 7.6 (kernel-3.10.0-957.el7) or later RHEL 7 kernel
  • TCP sockets in TIME WAIT state
  • net.ipv4.tcp_tw_reuse = 1 kernel tunable to re-use TW sockets

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