FortiGate unable to add loopback interface to zone
Hello,
We have couple FGT-300D devices running FortiOS v5.2.6,build711 GA and we are migrating configuration and policies to zone from interfaces (physical and VLANs). But I an unable to add loopback interfaces to a zone. Loopback if is not referenced in any policies, but still not available to be added to a specific zone. Tried from GUI and CLI.
Does this OS have a bug regarding this issues or this is a product design restriction?
Thank you!