Why "firewall-cmd --reload" fails with message "Error: COMMAND_FAILED: Direct: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore: line X failed"?

Solution Verified - Updated -

Issue

  • While reloading firewall-cmd rules, getting error as COMMAND_FAILED: Direct: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore: line X failed

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Firewalld

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