In the SD-WAN 7.6 Core Administrator curriculum, steering " local-out " traffic (traffic generated by the FortiGate itself, such as DNS queries, FortiGuard updates, or diagnostic pings) requires specific configuration because this traffic follows a different path than " forward " traffic.
Individual Configuration (Option A): By default, local-out traffic bypasses the SD-WAN engine and uses the standard system routing table (RIB/FIB). To use SD-WAN rules for specific features like DNS or RADIUS, you must individually enable the sdwan interface-select-method within that feature ' s configuration (e.g., config system dns or config user radius).
Default Steerable Traffic (Option B): In FortiOS 7.6, while most local-out traffic is excluded from SD-WAN by default, the system is designed so that when SD-WAN is active, it primarily considers SD-WAN rules for specific diagnostic local-out traffic—specifically ping and traceroute—to allow administrators to verify path quality using the same logic as user traffic.
Why other options are incorrect:
Option C: Local-out traffic can be steered using any SD-WAN strategy (Manual, Best Quality, etc.), provided the interface-selection-method is set to sdwan.