In a dual-machine hot backup scenario, the NAT address pool is not allowed to contain the IP addresses of the host and backup machine interfaces. If the NAT address pool contains the IP address of…

In a dual-machine hot backup scenario, the NAT address pool is not allowed to contain the IP addresses of the host and backup machine interfaces. If the NAT address pool contains the IP address of the interface, when the upstream device requests ARP for the IP address in the address pool, both the host and the backup device will respond, causing an ARP conflict.