Source: www.domainnews.com Why IPv6 has not been deployed on a large scale is discussed by GeoffHuston in this article for the Cisco Internet Protocol Journal. Hustonexamines the timing of the IPv4 address exhaustion and the nature ofthe intended transition to IPv6 as well as considering the shortfallsin the implementation of this transition, and identifying theirunderlying causes. Finally he considers the options available at thisstage and identify some likely consequences of such options.