General Musing

blaze your trail

IPv4 address space filling up

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I have a digital subscription to Electronic Design Europe Digital and they lead with scaremongering. The IPv4 address space is filling up.

The Organisation for Economic Co-operation and Development (OECD) has established that 3.65 billion of the 4.3 billion available addresses are already allocated to Internet users. This organisation believes that within three years, the world will have exhausted its stock of IP addresses.

This is something which has been known for years, if it wasn’t for such techniques such as NAT (Network Address Translation) we’d be over the edge already.
One of the issues, as stated in the article, is that the lack of IP numbers brings an additional problem there is little space left for the coexistence of IPv4 and IPv6. The address translation requires IPv6 and IPv4 addresses to be linked, in a method similar to NAT.
Besides from this there are many more advantages to IPv6, security and efficiency.

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Written by Daniël W. Crompton (webhat)

July 7, 2008 at 4:15 pm

Posted in network

Tagged with , , , , , ,

One Response

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  1. Milton Mueller, from the Internet Governance Project, is blogging on an upcoming paper comparing different approaches to creating a transfer market for IP addresses. Under the current system, IP addresses are allocated in large blocks to RIRs, who in turn pass them down to various entities. That system has proven to be inefficient because those entities have little incentive to return the unused IP addresses back to the available pool. Transfer markets would create positive incentives for those entities to make their unused IP addresses available to those who needed them.

    Here are the links (its a 3 part series) to the posts on transfer markets:


    Mark Costa

    July 17, 2008 at 11:57 am

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