[AusNOG] RFC7278 - "Extending an IPv6 /64 Prefix from a Third Generation Partnership Project (3GPP) Mobile Interface to a LAN Link"

[Karl Auer]

On Wed, 2014-07-02 at 22:28 +1000, Joseph Goldman wrote:
> I understand the vastness of the IPv6 address space, and to be fair, the 
> same words were likely uttered a couple decades ago with IPv4

Only in the same way as a past head of IBM said that the market for
computers was "about seven" and Alexander Grahame Bell opined it
possible that one day every city might have a telephone.

>    1) (and probably most importantly) a lot of IPv6 features rely on a 
> subnet size of /64 (SLAAC given as the example)

Actually, SLAAC is pretty much the *only* thing that works only
with /64s by definition. While the IPv6 host subnet size is standardised
at /64, for many good reasons, anything apart from SLAAC that fails to
work with longer or shorter prefixes is broken and should be fixed.

> It's mind boggling to think, how many /64's I can essentially hand out 
> with my single allocation of /32. If I'm not mistaken, there are as many 
> /64's in a /32, as there is IPv4 address' available in total?!

Yup. Cool, isn't it.

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

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