Hoi John,
Interesting situation!
On Fri, Apr 27, 2012 at 10:09 AM, John.Collins@bit.admin.ch wrote:
Hi SWINOG members, we’re a LIR, we got a /32 from RIPE and we want to allocate /40s and /48s to customers. Only snag is that the customers will not have their Internet feed from us but from any Service Provider of their choice.
The /32 you received from RIPE is implicitly provider aggregatable and cannot be deaggregated. Your downstreams could announce their /40 or /48 to their peers, but filtering is pretty strict with IPv6 community, so it's not expected that they will obtain global visibility via their X Y Z service provider.
/0: 1, /8: 1, /10: 1, /12: 1, /16: 1, /19: 2, /20: 5, /21: 3 /22: 5, /23: 5, /24: 7, /25: 4, /26: 9, /27: 10, /28: 31, /29: 19 /30: 15, /31: 13, /32: 4049, /33: 97, /34: 87, /35: 93, /36: 242, /37: 7 /38: 50, /39: 22, /40: 385, /41: 12, /42: 18, /43: 34, /44: 151, /45: 15 /46: 75, /47: 45, /48: 3006, /49: 3, /50: 1, /52: 5, /56: 9, /64: 40 /126: 1, /128: 45
So where did all the /48s come from ... also one or two /40s... ??
There exists also provider independent IPv6 space -- it was contested for many years, but it is now possible at several RIRs to receive a /40 or /48 PI.
What do you think about this? If you’re a SP would you route the /48s or /40s from the customers? What about your upstream peers?
I would not advertise, but I would accept up to /40. Most upstreams I had dealt with accept only the PA block as a whole, ie no de-aggregation.