Approximately 0.05 per cent of the world’s Internet users will be unable to access Web sites that support both IPv6 and the current standard, IPv4 after upgrading to IPv6 occurs. Although this percentage may seem small, it represents 1 million users and that has Yahoo concerned. In an effort to better understand the impact, Yahoo is participating in World IPv6 Day, a 24-hour trial of IPv6 connectivity that will allow participating Web sites to gauge the true level of IPv6 brokenness.
“‘The numbers are going to vary from site to site, but it’s definitely very critical that everybody understands that when they do make themselves available through both IPv4 and IPv6 at the same time what impact there will be on a small percentage of users,’ says Jason Fesler, an IPv6 architect with Yahoo.”
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