Re: Why /64

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>Specifically, I think the "quite a few [ISPs] give exactly 1 IPv6 address to their users" statement is not true in the case of mainstream residential ISPs - I think they all provide at least a /64, and more usually at least a /60.
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During their IPv6 trial, Internode gave out /60s. When they deployed production residential broadband IPv6 in 2011 (which I worked on), the provided a dynamic /64 to the CPE via SLAAC (which allows direct connection of a PC as an alternative to using a CPE), and a static /56 via DHCPv6-PD. They fairly recently said they now have 10% of their customers using IPv6, as they've been enabling it by default on all new customer connections and providing IPv6 enabled CPE with it. Going by the published customer numbers, 10% is in the order of 16 000 to 18 000 services with native IPv6 connectivity.

http://www.internode.on.net/news/2013/06/309.php

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