http://tools.ietf.org/html/draft-fuller-240space-02
On Tue, Mar 6, 2012 at 4:30 PM, Guru NANOG <nanog.g...@gmail.com> 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 spectrum > <spectrumhttp://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt>. > > The real Source Address is shifted 4 bits to the Right. The bits > shifted off are placed in the Deprecated TOS field in the DDDD bits. > The new TOS field has the SSSS.DDDD for the CPE. > > If a router attempts to reply or return to the Source Address it will > hit one of the Regional Hubs. There are 16 of those. > Agile CPE can reply in other ways to the Agile CPE that sent the > Source Address with the 1111 bits. > > NANOG operators may want to study the evolution of 6to4 (2002:IPv4:0000) to > 6RD (IPv4:IPv4) which tunnels using Re-Used legacy 32-bit addresses. > > The Legacy 32-bit Address Space will likely be around a long long time > and be reused in many ways. > That may increase the market value of /8s. Brokers are now selling /8s > on the open market. > > http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt > <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] > ... > 255/8 Future use 1981-09 > RESERVED [15] > http://tools.ietf.org/html/draft-gundavelli-v6ops-community-wifi-svcs > <http://tools.ietf.org/html/draft-gundavelli-v6ops-community-wifi-svcs-014.13.> > > 014.13. > <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.
