> A few things, 1) interest payments presupposes that one loans money to buy > addresses, 2) as long as 40% of all traffic is still IPv4 for DS enabled > customer, we need a fairly sizable CGN/AFTR setup. > > From our perspective, doing investments on CGN/AFTR technology now can almost > be comparable with buying address, as we must consider deprecation on the > equipment anyways. If we can wait a bit longer and the IPv4 traffic lowers to > for example 10% and then do the CGN /AFTER investment, it would possibly be > cheaper and possibly be done with equipment we already have. I guess seen > from a pure economics perspective it does not make much difference, but at > least we can uphold the native IPv4 until the majority of ISP's and content > providers are fully Dual-Stacked. > > So it is not just money that drives our service, quality and availability is > also important factors.
if I were building a new network today, I would make it IPv6 only, with IPv4 as a service on top. with A+P variants like MAP, that function can be enabled on existing peering routers or PEs. cheers, Ole
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