http://www.rfc-editor.org/rfc/rfc8294.txt
RFC 8294: Common YANG Data Types for the Routing Area, X. Liu, Y. Qu, A. Lindem, C. Hopps, L. Berger2017-12-01T23:00:00-00:00This document defines a collection of common data types using the YANG data modeling language. These derived common types are designed to be imported by other modules defined in the routing area.