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Re: IPv6 addressing limitations (was "national security")

2003-12-02 16:34:45
On 2-dec-03, at 21:04, Anthony G. Atkielski wrote:

Why dedicated /64 to anything?  We are getting by just fine on /32 for
the whole world right now.  Why is a sudden expansion of 2^32 required
RIGHT NOW?

Stateless autoconfiguration.

See, that's the classic mistake: Everyone wants to divide the entire
address space RIGHT NOW, without any clue as to how the world will
evolve in years to come.  Nature may abhor a vacuum, but it certainly
also seems that engineers abhor unallocated address space, and will try
to allocate everything even when they are lightyears off the mark

About 85% of the IPv6 address space is specifically left unused at this time. And even within the 2000::/3 which is defined for global unicast use *now* just 3/8192th is really used.