AS112 provides a mechanism for handling reverse lookups on IP addresses that are
not unique (e.g., RFC 1918 addresses). This document describes modifications to the
deployment and use of AS112 infrastructure that will allow zones to be added and
dropped much more easily, using DNAME resource records. This approach makes it
possible for any DNS zone administrator to sink traffic relating to parts of the
global DNS namespace under their control to the AS112 infrastructure without
coordination with the operators of AS112 infrastructure.