Re: IETF - Overlapping IPv4 Address Support

[Randy Whitney]

On 3/6/2012 3:57 PM, Guru NANOG wrote:

Adding four more bits to the Left of the Source Address and setting
those bits to 1111 (0xF) can help to start the migration to "Regions"
and more IPv4 Addresses - Using and Re-Using legacy
spectrumhttp://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt

16 /8s for "Future use" - it looks like the "Future" has arrived

240/8  Future use                                     1981-09
           RESERVED    [15]
    241/8  Future use                                     1981-09
              RESERVED    [15]
    242/8  Future use
                                    ...
  253/8  Future use                                     1981-09
            RESERVED    [15]
    254/8  Future use                                     1981-09
              RESERVED    [15]
    255/8  Future use                                     1981-09
              RESERVED  [15]

http://tools.ietf.org/html/draft-gundavelli-v6ops-community-wifi-svcs-014.13.
Overlapping IPv4 Address Support Wi-Fi Service Provider may segment the
network into regions. Two regions may use overlap IPv4 address space. This
is particularly important when the Internet is transitioning to IPv6. The
Wi-Fi SP may not have enough unique public IPv4 addresses to globally
address large number of Wi-Fi device.

Please tell me this is a poor attempt at humor.
--
Randy.