[150848] in North American Network Operators' Group
IETF - Overlapping IPv4 Address Support
daemon@ATHENA.MIT.EDU (Guru NANOG)
Tue Mar 6 15:57:55 2012
Date: Tue, 6 Mar 2012 14:57:00 -0600
From: Guru NANOG <nanog.guru@gmail.com>
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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.
