Use Case 2: Forward LAN traffic to the External Network through the Gateway after HA Failover

In the Azure HA environment, the floating IP address (the interface IP on SonicOS) is the default gateway of the LAN subnet. Traffic from the LAN to the external network goes to the Active firewall, because the floating IP address moves with the Active role. After an HA failover, the former Active firewall becomes the Standby firewall, and traffic goes to the new Active firewall.