Value,Name,Min. Schema Version,Max. Schema Version,Comment,Reference 0,Reserved,8.0,All Versions,,[RFC9692] 1,Unassigned,,,, 2,metric,8.0,,Distance of the prefix.,[RFC9692] 3,tags,8.0,,"Generic unordered set of route tags, can be redistributed to other protocols or used within the context of real time analytics.",[RFC9692] 4,monotonic_clock,8.0,,Monotonic clock for mobile addresses.,[RFC9692] 6,loopback,8.0,,Indicates if the prefix is a node loopback.,[RFC9692] 7,directly_attached,8.0,,Indicates that the prefix is directly attached.,[RFC9692] 8-9,Unassigned,,,, 10,from_link,8.0,,Link to which the address belongs to.,[RFC9692] 11,Unassigned,,,, 12,label,8.0,,"Optional, per-prefix significant label.",[RFC9692] 13-65535,Unassigned,,,,