William Herrin wrote: [..] > I'm not aware of any way of dynamically assigning an IPv6 subnet to a > customer that's as well automated as IPv4 /32 dynamic assignment to a > DSL router with an RFC1918 NATed interior, but that may just be my > ignorance since I haven't needed to research it.
DHCP-PD (prefix delegation) > Static IP customer: /60 ARIN defines a /56 minimum. That is the reason that ISPs get a /32. RIPE defines a /48 at the moment. [..] > I recommend /60 as the customer default where most folks suggest /56 > or /48. The IPv6 use profile looks a heck of a lot like the IPv4 use > profile and /60 is 16 subnets. How many of your customers find a > reason to use more than 3 IPv4 subnets, including their RFC1918 ones? > Relatively few. Think Future. And why bother with that anyway. If you as an ISP needs more address space just ring RIPE/ARIN/APNIC and ask for more, they will happily give it to you. > Giving every customer enough subnets by default to meet 90% of the > typical usage profiles is not the worst idea in the world... IMHO it's > a pretty bright idea. But there's no need to be damnfool wasteful > about it. I guess you ran the numbers on how to run out of IPv6 address space? You can always ask the US DoD for a few /32s, they have enough of them... Routing will become a problem before IPv6 address space will run out. Oh, and we are only allocating from 2000::/3 at the moment, can retry on the other 7 /8s.... Greets, Jeroen
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