This publication seeks to assist Federal agencies in formulating plans for the acquisition of IPv6 technologies. To achieve this, we define a standards profile for IPv6 in the USG that is intended to be applicable to all future uses of IPv6 in non-classified, non-national security federal IT systems. The standards profile is meant to: (a) define a simple taxonomy of common network devices; (b)define their minimal mandatory IPv6 capabilities and identify significant configuration options so as to assist agencies in the development of more specific acquisition and deployment plans; and, (c) provide the technical basis upon which future USG polices can be defined.