The Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) are issuing a final rule amending the Federal Acquisition Regulation (FAR) to require Internet Protocol Version 6 (IPv6) compliant products be included in all new information technology (IT) acquisitions using Internet Protocol (IP).
http://edocket.access.gpo.gov/2009/E9-28931.htm
I guess I'm out of the loop but I thought this was mandated a long time ago?