On Friday, September 16, 2011 05:28:55 PM Randy Bush wrote:
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.