> I'll put this as bluntly and succinctly as I can because I find the LIR > distriction arbitrary... > > I have an ipv6 direct assignment from ARIN.
I am assuming you are an enterprise in PI space and not an ISP in PA space? > It is sized to meet the needs of my enterprise consistent with needs > for future growth number of pops, prevailing ARIN policy etc. > > Because my network is discontiguous I must announce more specific > routes than the assignment in order to reflect the topology I have both > in IPV4 and in IPV6. > I fully expect (and have no evidence to the contrary) that my transit > providers will accept the deaggreated prefixes and that their upstreams > and peers will by-in-large do likewise. If you are in PI space, I believe most people take down to a /48 as a /48 is generally accepted to be a single "site". So let's say you were given a /40 and have several disconnected sites. Most people are going to accept a /48 from you in PI space. I would say pretty close to "everyone" is going to accept a /48 from PI space. An ISP that has been given a /32 or larger allocation from PA space and might have 10,000 customers each assigned their own /48 could instantly more than double the size of the IPv6 routing table if they disaggregated that /32. The problem here is that each /32 is 65536 /48 networks. An even larger net, say a /30 that disaggregates due to a router configuration goof means a potential of a huge number of networks suddenly flooding the Internet.
