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The earliest recollection of this bug is traced back to PAN-OS 8.1.10 - July 22, 2025. This bug is fixed in PAN-OS versions 8.1.10. ( PA-7000, PA-5200, and PA-3200 Series firewalls only ) Fixed an issue where the firewall dropped ICMP error messages when the security policy was configured to allow ICMP For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-10-addressed-issues
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