Re: IPv6 end user addressing

[Owen DeLong <owen () delong com>]

/56 is definitely preferable to /64, but, /48 really is a better choice.

/56 is very limiting for autonomous hierarchical deployments.

It's not about number of subnets. It's about the ability to provide some flexibility
in the breadth and depth of bit fields used for creating hierarchical topologies
automatically.

Owen

On Aug 5, 2011, at 9:17 AM, Brian Mengel wrote:

> In reviewing IPv6 end user allocation policies, I can find little
> agreement on what prefix length is appropriate for residential end
> users.  /64 and /56 seem to be the favorite candidates, with /56 being
> slightly preferred.
>
> I am most curious as to why a /60 prefix is not considered when trying
> to address this problem.  It provides 16 /64 subnetworks, which seems
> like an adequate amount for an end user.
>
> Does anyone have opinions on the BCP for end user addressing in IPv6?

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