The Office of Management and Budget (OMB) issued Memorandum M-21-07, Completing the Transition to Internet Protocol Version 6 (IPv6), November 19, 2020, to address this issue by communicating requirements and setting forth guidelines for the Federal government to transition to an IPv6-only environment. OMB M-21-07 requires DOE to issue an agency-wide IPv6 policy. DOE O 200.1A, Information Technology Management, was selected for the inclusion of this IPv6 policy. The Order, dated August 11, 2023, supersedes current interim policy memorandum titled, Department of Energy Complete Transition to Internet Protocol Version 6 (IPv6) Interim Solution, issued May 28, 2021.