/48 vs. /56 for customers, was XS4ALL Introduces native IPv6 for DSL customers

Bjørn Mork bjorn at mork.no
Fri Aug 27 14:19:43 CEST 2010


Shane Kerr <shane at time-travellers.org> writes:

> With at "normal" /32 allocation you can only give 65k customers a /48,
> which is non-trivial but also almost certain to happen sooner or later.
> So any ISP of size will run out of address space if they use /48, and
> then will have to shift to /56 eventually.

Any ISP of size will request and get much more than a /32.


Bjørn


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