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Consequences of the IPv4 runout

The number of unallocated IPv4 addresses is steadily decreasing worldwide. The unallocated pool of addresses at the RIPE NCC, the Regional Internet Registry for this region, has reached its last /8 (16.7 million addresses) in September 2012, at which point a very different distribution regime was initiated. For most practical purposes, the region ran out of IPv4 addresses. This runout could, and on the longer run will, cause significant changes in the uptake of IPv6 use. This in turn will affect on how network operator approach IPv6 in general, even if they have no immediate need to switch on IPv6 on their networks. By mid 2013 it'll be possible to have a better understanding of what has changed, what is changing and what is likely to change in terms of IPv4 and IPv6 usage by looking at distribution, interconnectedness, actual network traffic and other metrics.

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