This read-create TruthValue marks an interface as point-to-point without requiring the neighbor to send PIM Hello messages, provided for back-compatibility with older implementations, and changing it while the interface is operational deactivates and then reactivates that interface. It lets an admin maintain PIM adjacency with legacy equipment that never sends Hellos. For example, setting this to true on a point-to-point link to an older router that never sends PIM Hellos avoids the local router mistakenly treating that neighbor as down.