Why does the "icmp packet filtered" message appear when pinging an external IP address with masquerade enabled on RHEL 9 as a router?

Solution Verified - Updated -

Issue

  • Why does the "icmp packet filtered" message appear when pinging an external IP address with masquerade enabled on RHEL 9 as a router?
  • How do you enable the forwarding of packets within the same zone between different sources or interfaces?
  • When attempting to ping external IP addresses from the OCP pod to the egress interface via the public interface, an ICMP "Packet filtered" response is received.

Environment

  • Redhat Enterprise Linux 9
  • Redhat Enterprise Linux 9 as a router
  • OCP Router Node - OpenShift Container Platform
  • Firewalld

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