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IPv6 Address Architecture Status May 31, 2001 Redmond Interim Meeting Bob Hinden

IPv6 Address Architecture Status May 31, 2001 Redmond Interim Meeting Bob Hinden. Changes from -05 Draft. Added an IANA considerations section. Added clarification that "IPv6 Addresses with Embedded IPv4 Addresses" must use global IPv4 addresses.

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IPv6 Address Architecture Status May 31, 2001 Redmond Interim Meeting Bob Hinden

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  1. IPv6 Address ArchitectureStatusMay 31, 2001Redmond Interim MeetingBob Hinden

  2. Changes from -05 Draft • Added an IANA considerations section. • Added clarification that "IPv6 Addresses with Embedded IPv4 Addresses" must use global IPv4 addresses. • Divided references in to normative and non-normative sections. • Added reference to [PRIV] in section 2.5.1 • Revised section 2.4 to clarify the FPs that are for Global Unicast Addresses and combined sections on the Global Unicast Addresses and NSAP Addresses into one section on Global Unicast Addresses. • Added clarification that all unassigned FP's must be treated as global unicast addresses unless unless another standards document defines an exception.

  3. FP Table Revision Allocation Prefix Fraction of (binary) Address Space ----------------------------------- -------- ------------- Reserved 0000 0000 1/256 Global Unicast 0000 0001 1/256 xxxxx Reserved for NSAP Allocation 0000 001 1/128 xxxxx Global Unicast 0000 001 1/128 Global Unicast 0000 010 1/128 Global Unicast 0000 011 1/128 Global Unicast 0000 1 1/32 Global Unicast 0001 1/16 xxxxxx Aggregatable Global Unicast Addresses 001 1/8 xxxxx Global Unicast 001 1/8 Global Unicast 010 1/8 Global Unicast 011 1/8 Global Unicast 100 1/8 Global Unicast 101 1/8 Global Unicast 110 1/8 Global Unicast 1110 1/16 Global Unicast 1111 0 1/32 Global Unicast 1111 10 1/64 Global Unicast 1111 110 1/128 Global Unicast 1111 1110 0 1/512 Link-Local Unicast Addresses 1111 1110 10 1/1024 Site-Local Unicast Addresses 1111 1110 11 1/1024 Multicast Addresses 1111 1111 1/256

  4. IANA Considerations • The table at http://www.isi.edu/in-notes/iana/assignments/ipv6-address-space.txt should be replace by the table and notes in section 2.4. • All IANA allocations of IPv6 address space to the Internet Address Registries should be made from FP 001. All other Global Unicast format prefixes are reserved for future use and are not to be assigned by IANA at this time. • Format prefix 0000 001 is reserved for NSAP Allocation as defined in [NSAP].

  5. Global Unicast Adddress Section | n ||bits| m bits | p bits | 128-n-m-p bits |+----+-------------------+-----------+----------------------------+| FP | routing prefix | subnet ID | interface ID |+----+-------------------+-----------+----------------------------+ • Lists OSI NSAPs and IPv6 and Aggregatable Global Unicast Addresses as examples

  6. Open Issues • Add::FFFF:0:0:0/96 IPv4 translatable prefix [SIIT]to global unicast addresses exception list or generalize to 0000:0000::/32

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