The earliest recollection of this bug is traced back to PAN-OS 10.2.16-h4 - November 10, 2025. This bug is fixed in PAN-OS versions 10.2.16-h6, 11.1.10-h7, 10.2.16-h4, 11.2.10, 10.2.17, 11.1.10-h5. ( Firewalls in active/passive HA configurations ) Fixed an issue on firewalls where, after failover, certain subnets were missing from the Link State Database, which prevented OSPF routes from being immediately learned due to a Type-7 to Type-5 LSA translation conflict in the ABR when the same LSA was advertised by two peers in the NSSA area. For more information: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-16-known-and-addressed-issues/pan-os-10-2-16-h4-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-16-known-and-addressed-issues/pan-os-10-2-16-h6-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-17-known-and-addressed-issues/pan-os-10-2-17-addressed-issues 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-h5-addressed-issues 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/11-2/pan-os-release-notes/pan-os-11-2-10-known-and-addressed-issues/pan-os-11-2-10-addressed-issues