Owen DeLong wrote:
Part of the reason that 128 bits was chosen (64 bits is FAR more than
enough) was that it allowed for 64 bits of stateless auto-configuration
(IEEE was already pushing EUI-64) within each network and still
provided more than enough network numbers.
I'm sure the Really Smart People over at the IETF could have figured
out a way to do auto configuration with "just" 16 bits of /112 (or
a /48 of 64 bit space).
It will be interesting to see if things evolve to using /112's anyway
just to escape auto configuration. I use them for router links and
server subnets because it's a convenient boundary for notation.
- Kevin
