On 3 Mar 2011, at 1:56, Florian Weimer wrote:
There is a valid need for some LIRs to advertise more than one IPv6 PA prefix. As either obtaining more address space and advertising more /32 prefixes, or advertising more specific prefixes within an already allocated /32 have the same impact on the routing table, it is suggested that the latter approach is taken to prevent address space wastage.
Another approach would be to leave the filtering recommendation at /32, and give LIRs the full /29 (or so) which is currently reserved for them.
That would not work well for a situation where people take RPKI into consideration when developing their routing policies. Also, I understand that the RIPE NCC has started using a sparse allocation mechanism for IPv6 allocations and this wouldn't work with that. Regards, Leo