The earliest recollection of this bug is traced back to PAN-OS 10.1.6 - February 19, 2025. This bug is fixed in PAN-OS versions 10.1.6. Fixed an internal path monitoring failure issue that caused the dataplane to go down. For more information: https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-6-known-and-addressed-issues/pan-os-10-1-6-addressed-issues