2010 Jul 1, 10:51"Sometimes it’s hard to judge whether an engineering effort has been successful or not. It can take years for an idea to catch on, to go from being the butt of jokes to becoming an international
imperative (IPv6). Uniform Resource Names (URNs), which are part of the Uniform Resource Identifier (URI) family, are conceptually at least as old as IPv6. While not figuring in international
directives for deployment, they-and the technology engineered to resolve them-are still going concerns."
ietf urn uri history technical internet url