The earliest recollection of this bug is traced back to PAN-OS 11.1.6-h21 - February 25, 2026. This bug is fixed in PAN-OS versions 11.1.9, 11.1.6-h21, 11.2.8. Fixed an issue where the configd process stopped responding due to a circular reference between address groups. For more information: https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-6-known-and-addressed-issues/pan-os-11-1-6-h21-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-9-known-and-addressed-issues/pan-os-11-1-9-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-2/pan-os-release-notes/pan-os-11-2-8-known-and-addressed-issues/pan-os-11-2-8-addressed-issues