RE: filtering /48 is going to be necessary

Deaggregating to /48's is not a good idea, but giving an LIR a few bits (something like 3 or 4) to deaggregate makes sense.

- Sander

+1 I wouldn't have a problem with a few bits of disaggregation. That seems reasonable for a network that might be subject to partitioning or doesn't have a fully meshed internal net.