Refer to the exhibits.
The exhibits show a diagram of a requested topology and the base IPsec configuration.
A customer asks you to configure ADVPN via two internet underlays. The requirement is that you use one interface with a single IP address on DC FortiGate.
In this scenario, which feature should be implemented to achieve this requirement?
A is correct because using network-overlay id allows you to configure multiple ADVPN tunnels on a single interface with a single IP address on the DC FortiGate. This is explained in the FortiGate Administration Guide under ADVPN > Configuring ADVPN > Configuring ADVPN on the hub. References: https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/978793/advpn https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/978793/advpn/978794/configuring-advpn