http://www.rfc-editor.org/rfc/rfc3419.txt
RFC 3419: Textual Conventions for Transport Addresses, M. Daniele, J. Schoenwaelder2002-12-01T23:00:00-00:00This document introduces a Management Information Base (MIB) module that defines textual conventions to represent commonly used transport-layer addressing information. The definitions are compatible with the concept of TAddress/TDomain pairs introduced by the Structure of Management Information version 2 (SMIv2) and support the Internet transport protocols over IPv4 and IPv6. [STANDARDS-TRACK]