http://www.rfc-editor.org/rfc/rfc1546.txt
RFC 1546: Host Anycasting Service, C. Partridge, T. Mendez, W. Milliken1993-11-01T23:00:00-00:00This RFC describes an internet anycasting service for IP. The primary purpose of this memo is to establish the semantics of an anycasting service within an IP internet. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.