On Jun 21, 2012, at 4:40 PM, Masataka Ohta wrote: > Owen DeLong wrote: > >> Does not scale. Not enough IPv4 addresses to do that for 6.8 >> billion people on the planet. > > It is the first step to have the RSIP style transparent Internet. > > The second step is to use port numbers for routing within ISPs. > But, it is not necessary today. > Still doesn't scale. 40 bits isn't enough to uniquely identify a conversation end-point. If you use port numbers for routing, you don't have enough port numbers for conversation IDs.
>> What if my ISP just routes my /48? Seems to work quite well, >> actually. > > Unlike IPv4 with natural boundary of /24, routing table > explosion of IPv6 is a serious scalability problem. > Solvable. IPv6 has enough bits that we can use map/encap or other various forms of herarchical overlay ASN-based routing to resolve those issues over time. Owen
