BBC News - 'Fresh proposals' planned over cyber-monitoring

[Charles Lindsey]

On Sun, 12 May 2013 10:07:04 +0100, Florian Weimer <fw at deneb.enyo.de>  
wrote:

> * Charles Lindsey:
>
>> But I thought IPv6 did reserve a batch of numbers that would map into
>> the IPv4 space (but not at the "bottom" of the IPv6 range).
>
> There are at least three different reserved /96 prefixes for mapping
> IPv4 addresses.  Except for the deprecated ::/96 prefix, these
> mappings are incompatible with the IPv6 address architecture and its
> requirements on the structure of global unicast addresses, so their
> use on the IPv6 Internet is not permitted.
>

That looks like a total shambles. How have they managed to reserve space  
in the IPv6 range, and at the same time not made it legal? And is there no  
way such a facility could be added at this late stage?

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