The earliest recollection of this bug is traced back to PAN-OS 11.1.10-h7 - December 03, 2025. This bug is fixed in PAN-OS versions 11.1.6-h21, 11.1.10-h7, 11.1.13. Fixed an issue where, when the Network Packet Broker feature was enabled, forward TLS (non-decrypted) traffic was not working as expected when there were segmented client hellos and a no-decrypt rule existed. This issue occurred when Zone Protection profiles were configured for trust/untrust zones but not attached to NPB zones. For more information: https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-10-known-and-addressed-issues/pan-os-11-1-10-h7-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-release-notes/pan-os-11-1-13-known-and-addressed-issues/pan-os-11-1-13-addressed-issues 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