A bitmap of status flags describing the current characteristics of one dynamically learned route, such as whether it is the selected, active route, a blackhole route, an iBGP route, or an MPLS ingress/egress route. Admins inspecting a route's flags can quickly tell why that route behaves the way it does, for example whether traffic to a destination is actively being routed or silently dropped, without cross-referencing multiple separate fields. A route showing both the blackhole and static bits set would be a manually configured null route intentionally discarding traffic to that destination.