The policy defined in RFC 6761 for IANA registrations in the "Special-Use Domain
Names" registry has been shown, through experience, to present challenges that were
not anticipated when RFC 6761 was written. This memo presents a list, intended to
be comprehensive, of the problems that have since been identified. In addition, it
reviews the history of domain names and summarizes current IETF publications and
some publications from other organizations relating to Special-Use Domain Names.
This document should be considered required reading for IETF participants who wish
to express an informed opinion on the topic of Special-Use Domain Names.