Requirements for DIA traffic to fail over to an MPLS
link.
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At an SD-WAN branch office, the firewall performs split tunneling so that any
applications having a public IP address take the Direct Internet Access (DIA)
interface to the internet, and applications having private IP addresses that belong
to the hub take the VPN interface. The firewall automatically fails over DIA
applications to the MPLS private connection to the hub when necessary, so that the
traffic destined for the internet takes an alternative path through the hub to reach
the internet. To allow this to work, you must do the following:
