Internet Protocol Version 6: DOD Needs to Improve Transition Planning, Report to Congressional Committees [open pdf - 1MB]
From the GAO [Government Accountability Office] Highlights: "An internet protocol provides the addressing mechanism that defines how and where information moves across interconnected networks. Increased use of the internet has exhausted available IPv4 [Internet Protocol version 4] address space, spurring the adoption of its successor protocol, IPv6 [Internet Protocol version 6]. OMB has required that agencies plan for transitioning from IPv4 to IPv6. Senate and House reports accompanying the 2020 National Defense Authorization Act included provisions for GAO to review DOD's IPv6 transition planning efforts. This report (1) identifies past DOD attempts to transition to IPv6, (2) examines the extent to which DOD has completed OMB's [Office of Management and Budget] planning requirements for its current transition effort, and (3) identifies DOD's progress in completing its own IPv6 transition activities. To do so, GAO assessed DOD's IPv6 transition plans and documentation against OMB's requirements, reviewed DOD's planned IPv6 transition activities, and interviewed agency officials."
Government Accountability Office: https://www.gao.gov/