The earliest recollection of this bug is traced back to PAN-OS 10.1.5 - July 22, 2025. This bug is fixed in PAN-OS versions 10.2.1, 10.1.5, 9.1.13, 9.1.12. ( PA-3200 Series firewalls only ) Fixed an issue where the firewall stopped recording dataplane diagnostic data in dp-monitor.log after a few hours of uptime. For more information: https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-5-known-and-addressed-issues/pan-os-10-1-5-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-1-known-and-addressed-issues/pan-os-10-2-1-addressed-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-12-addressed-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-13-addressed-issues