One survey respondent, John Mann, a network architect at Monash University in Melbourne, Australia, said his organization has been making steady IPv6 progress for years.
"Mostly IPv6 has just worked," Mann said. "IPv6 has been incrementally enabled in parallel with IPv4, and traffic has gradually moved across as AAAA records are added to the DNS. There have been occasional problems, but they have been worked through one by one.
"Our understanding of IPv6 has evolved over time as we have used it, found a problem and overcome it, used it some more, found the next problem, etc. The biggest problem is maintaining forward progress with IPv6 while it is still possible to take the easy option and fall back to IPv4."
The university's Web server has been IPv6-enabled since 2008.
Survey respondents indicated several potential stumbling blocks to IPv6 deployment on their internal networks and external websites. These include a lack of available commercial service from carriers, and network hardware and software products that lack feature-parity between IPv6 and IPv4.
"Our WAN suppliers and network vendors are currently the largest barriers to dual-stack IPv6 deployment," wrote one survey respondent. "Currently, our carrier does not offer MPLS service (or Internet) with IPv6. ... Our new network vendor (Juniper) does not yet have a full feature set (example: DHCPv6 Relay)."
Another survey respondent agreed that carrier deployment is lagging. "ISP support is lacking, otherwise we would have already adopted IPv6 for global connectivity," this respondent said.
DETAILS: Getting at the real truth about IPv6
The survey indicates that IT professionals are following the issue of IPv6 deployment closely. Two-thirds of the survey respondents said they have hands-on experience with IPv6, and more than half said that "it is important that IPv6 be adopted as quickly as possible."
Still, IT professionals have many unanswered questions about IPv6, with 64% saying that they need more education about implementing IPv6.
AUTHOR EXPERT: Five Biggest IPv6 Misconceptions
The Network World IPv6 survey targeted IT professionals who will be involved in corporate upgrades to IPv6. Of those who responded, 90% said they would be directly responsible or have influence over some aspect of their company's IPv6 deployment.