George, On Thu, May 12, 2011 at 11:41 AM, George Bonser <gbon...@seven.com> wrote: >> A lot. I see /48 breakouts from /32 PA blocks for instance, announced >> by a >> customer AS of the PA holder AS. >> >> -- >> Mikael Abrahamsson email: swm...@swm.pp.se > > Which is kinda sad.
It's reality. > If those customer AS are multihomed or plan to be > multihomed, they can get their own allocation out of PI space. If they > are not multihomed outside of the provider AS, there is no need for the > provider to "leak" that /48 out of their AS to their peers. In the RIPE region, being multihomed or planning to be it is not a sufficient condition for getting a PI prefix. And even if it was, the hit on DFZ is the same as from getting allocation from LIR. Even if they get their own /32, the hit would be the same (modulo individual FIB/RIB implementations). Consequently, there's work in progress to modernize RIPE IPv6 address policy. http://ripe62.ripe.net/presentations/148-wg.pdf p. 19 and forward. Cheers, Martin
