On 20/08/2008, at 5:25 AM, Michael Thomas wrote:
Justin M. Streiner wrote:
On Tue, 19 Aug 2008, [EMAIL PROTECTED] wrote:
I don't have a problem with assigning customers a /64 of v6
space.
Why so little? Normally customers get a /48 except for residential
customers who can be given a /56 if you want to keep track of
different block sizes. If ARIN will give you a /48 for every
customer, then why be miserly with addresses?
I don't operate an ISP network (not anymore, anyway...). My
customers are departments within my organization, so a /64 per
department/VLAN is more sane/reasonable for my environment.
Uh, the lower 64 bits of an IP6 address aren't used for routing you
know? They're essentially the mac address, or some other sort of
autoconf'd host identifier. Last I heard, the smallest allocation is
supposed to be a /48 -- I hadn't heard of the /56 thing that Michael
was speaking of, though I'm not surprised. There's 64 bits for
routing... no need to be so stingy :)
64 bits is not a magical boundary.
112 bits is widely recommended for linknets, for example.
64 bits is common, because of EUI-64 and friends. That's it.
There is nothing, anywhere, that says that the first 64 bits is for
routing.
--
Nathan Ward
