Overview
Fixed an issue on high availability configurations where, after upgrading to PAN-OS 9.1.10, PAN-OS 10.0.6, or PAN-OS 10.1.0, the HA1 and HA1-Backup link stayed down. This issue occurred when the peer firewall IP address was in a different subnet.
Impact
HA1/HA1 backup link not coming up
root_cause
Internal routing lookup mechanism didn't work as expected