This read-write value sets the type of a static route, matching the standard inetCidrRouteType values but excluding 'other', such as remote, local, blackhole, reject, or nd. An admin picks blackhole to silently drop traffic to a given destination, or reject to actively return an unreachable error, for example to null-route unwanted traffic. For example, setting a static route's type to blackhole for a known bad destination network silently discards traffic to it without notifying the sender.