Re: IPv6 mistakes, was: Re: Looking for an IPv6 naysayer...

[Iljitsch van Beijnum <iljitsch () muada com>]

On 18 feb 2011, at 14:10, Arturo Servin wrote:

>       When you talk about "unused" legacy space are you talking about the "various" space or to the legacy space that 
> is currently assigned but the holders just require part of it? 

Legacy space (A) = all the /8s marked as "legacy" by IANA.

Used legacy space (B): addresses allocated/assigned according to one of the RIRs which falls within A.

Unused legacy space (C): A - B.

Examples: lots of class B networks, either they were never given out or they were returned. And 45/8 minus 45.0.0.0/15.