The earliest recollection of this bug is traced back to PAN-OS 11.0.1 - November 18, 2024. ( PAN-OS 11.0.1-h2 hotfix ) System process crashes might occur with VoIP traffic when NAT is enabled with Persistent Dynamic IP and Port settings. For more information: https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-1-known-and-addressed-issues/pan-os-11-0-1-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-2-known-and-addressed-issues/pan-os-11-0-2-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-3-known-and-addressed-issues/pan-os-11-0-3-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-4-known-and-addressed-issues/pan-os-11-0-4-known-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-6-known-and-addressed-issues/pan-os-11-0-6-known-issues