In message <4D4CA1B1.5060002@brightok.net>, Jack Bates writes:
On 2/4/2011 6:45 PM, Mark Andrews wrote:
I used to work for CSIRO. Their /16's which were got back in the late 80's will now be /48's.
That's why I didn't try doing any adjustments of X is the new /32. The whole paradigm changes.
So why the ~!#! are you insisting on comparing IPv4 allocations with IPv6 alocations.
Many ISPs devote large amounts of space to single corporate network sites. Those sites will now have a single /48. On the other hand, we currently give /32 to residential customers. They also are getting a /48.
Which is why the only way to consider address usage from an ISP and RIR perspective is by how it is handed to a standard ISP of a given size.
There are two sizes. Those that fit into a /32 and those that don't. The latter ones have to justify their allocations.
Originally, ARIN was being overly restrictive and it was "/32 for every ISP". They have loosened up, and will continue to do so (including ISP to ISP) as future proposals come to fruition. So from an ISP perspective, you have to consider your total IPv6 allocation size (within the first 32 bits of IPv6) in comparison to your total IPv4 allocations summed.
No. You need to compare it to the number of customer sites. If you have 1 customer with wires going to two locations thats two /48's.
From what I can tell, on average, all ISPs are shifting between 8 and 16 bits to the right from their total IPv4 size depending on their primary customer type (residential ISPs shift less than ISPs that primarily only service corporations).
Residential ISPs shift 16 bits (48-32=16). You shift less if you have less than 64000 customers sites and don't get address space from a larger ISP. Commercial ISPs shift more as what was multiple address at one sites becomes 1 /48. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org