stunnel application is reporting an error on configuration: "socket = r:TCP:NODELAY=1": Illegal socket option

Solution Verified - Updated -

Issue

  • Stunnel application is getting failed and throwing below error:
Sep 02 08:29:53 lab.example.com stunnel[79795]: [!] /etc/stunnel/stunnel.conf:23: "socket = r:TCP:NODELAY=1": Illegal socket option    <<======= Error on configuration file, line 23

Environment

  • Red Hat Enterprise Linux (RHEL) 9
  • Stunnel

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