There is work being done in the IETF to create such a private use TLD.
Where? Also, this may bring on a jurisdiction issue with ICANN/DNSO. It is the ICANN that is recommending new TLDs to the DOC, not the IETF. In order tfor that effort to comply with WIP process, it should make attempts to surface within relevent ICANN activity as well. Otherwise, ICANN doesn't know about it and can't make appropriate recommendations. I'm very much involved in that area and they are invisible to every one, in the DNSO. This effects the open/transparent process and if they don't want to catch a LOT of political flak (consider this fair-warning), they need to widen the visibility of their effort. This effects ICANN policy directly and IETF isn't a policy org. They are a PSO, not a DNSO.
-- ROELAND M.J. MEYER /USG/DOC/NTIA/ICANN/DNSO member
The IETF work predates much of ICANN & DNSo work. Clearly there has been too narrow a focus if the DNSo & ICANN do not believe that others have considered the impact of entry points in the DNS and that they have exclusive understanding of the ramifications of controlling this space. See RFC 2606 --bill