On Fri, 16 Mar 2012, Bjorn Pehrson wrote:
OK, fine, at this stage everything should be possible. I have found it hard to get general peering agreements for anything less than /24 though. One reason seems to be that there is still equipment out there that is not CIDR-capable.
Anything doing BGP nowadays is CIDR capable. The main reason for filtering anything longer than a /24 is to mitigate router table bloat.