IPv6 end user addressing

Jonathon Exley Jonathon.Exley at kordia.co.nz
Sun Aug 7 22:09:11 UTC 2011


This has probably been said before, but it makes me uncomfortable to think of everybody in the world being given /48 subnets by default.
All of a sudden that wide expanse of 2^128 IP addresses shrinks to 2^48 sites. Sure that's still 65535 times more than 2^32 IPv4 addresses, but wouldn't it be wise to apply some conservatism now to allow the IPv6 address space to last for many more years? 
After all, there are only 4 bits of IP version field so the basic packet format won't last forever.

Jonathon 

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