proposal for RIPE's IPv6-address space structure

Daniel Karrenberg writes:
 > 
 > How about just using the 56 bits for local-IR+subscriber?
 > The boundary does not need to be fixed at all.
 > Then use a similar scheme than the present IPv4 one to determine the
 > size of allocations to local IRs (provider): 
 > Fixed size for new local IRs and further allocations based on
 > established usage rate.
 > 
Using only 56 bits for the IR would effectively defeat the possiblity
of using MAC / ESI addresses as the low 48 bits of an IP address.

Pete