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BugZero updated this defect 288 days ago.
The earliest recollection of this bug is traced back to PAN-OS 8.1.6 - January 09, 2024. This bug is fixed in PAN-OS versions 8.1.6. Fixed an issue on a firewall in an HA active/passive configuration where a process ( all_task ) failed due to a ( bad_gtp_header ) code on the passive firewall after upgrading from PAN-OS 8.0.12. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-6-addressed-issues