[nycbug-talk] IPv6 and CIDR confusion

Jonathan Stewart jonathan at kc8onw.net
Fri Mar 23 17:00:38 EDT 2007

Isaac Levy wrote:
> Hi All,
> When searching for info about IPv6 netblocks, I found: "IPv6 uses a  
> CIDR-style architecture for address allocation"
> -but it's not actually CIDR?

It is actually CIDR style in the sense of being classless, no Class 
A/B/C etc.

> Does anyone know where to find out about the breakdown of netblocks?
> (e.g. what is a /64 for IPv6?  What is the equivalent of an IPv4  
> Class C, (/24 with 254 usable addresses?))

I was hoping to find something on wikipedia that would be a bit easier 
to work through for someone new to it but the RFC always works :)

Jonathan Stewart

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