> the downside of this would be that the customer could not > use auto-conf on their lan. the general religion on the > subject is that ipv6 space is effectively infinite (a > tenet to which i do not subscribe), and a very large > allocation, e.g. /48 or shorter, should be assigned to > each customer. I'm of a similar view, that v6 address space being viewed as infinite is a position I do not support. We just have no way of knowing what will happen in the future to accelerate the use of v6 address space. > /56 and /48 are commonly used sizes. Aye. We assign /56 to customers generally. This vastly increases the number of customers we can support than if we took a /48 model; 65,536 assignments vs. 16,777,216. I'll say... Do we still think a /56 is wasteful? Probably! But the imposition of SLAAC on /64's makes this all the more ridiculous. Mark.
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