The earliest recollection of this bug is traced back to PAN-OS 10.1.5 - February 19, 2025. This bug is fixed in PAN-OS versions 10.2.7-h3, 10.1.5. Fixed an issue on Amazon Web Services (AWS) Gateway Load Balancer (GWLB) deployments with overlay routing enabled where, when a single firewall was the backend of multiple GWLBs, packets were re-encapsulated with an incorrect source IP address. 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-10-2-7-known-and-addressed-issues/pan-os-10-2-7-h3-addressed-issues