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Public Comment

Public Comment is a vital part of our multistakeholder model. It provides a mechanism for stakeholders to have their opinions and recommendations formally and publicly documented. It is an opportunity for the ICANN community to effect change and improve policies and operations.

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Name: Registries Stakeholder Group (RySG)
Date: 22 Dec 2025
Email: [email protected]
Original Public Comment: Name Collision IPv6 Research Study
Other Comments

The gTLD Registry Stakeholder Group (RySG) acknowledges and appreciates the Name Collision IPv6 Research Study undertaken by ICANN. The Summary Report notes, and the RySG agrees that the need for an IPv6 Controlled Interruption methodology has increased substantially since the 2012 Round of New gTLDs since the deployment and use of IPv6 has increased substantially since that time.

Unfortunately, the Summary Report does not provide context for how this proposal will be implemented and its impact on the Name Collision Framework as specified by the Name Collision Analysis Project Study 2 Report (NCAP). Specifically, is the only change to be that the proposed candidate will be added to the IPv4 Controlled Interruption step? Or, will there be other changes to the Framework and process specified?

The NCAP Report carefully explained the process the NCAP Study Group found was necessary. The NCAP Report also noted that evolution of the process was likely and would need to be accommodated. The RySG requests that ICANN investigate the impact on the NCAP Report and propose an implementation plan to be reviewed by the community, similar to how it has approached the review of this research study.

Pending the review of the implementation plan, the RySG agrees that, based on the results of the research studies, the use of Candidate 1 (ffff::127.0.53.53) (also represented as (::ffff:7f00:3535)) as the AAAA record in the next round of Controlled Interruption activities is a good choice.

Summary of Submission

The Registries Stakeholder Group (RySG) agrees that the need for an IPv6 Controlled Interruption methodology has increased substantially since the 2012 Round of New gTLDs. The RySG requests that ICANN investigate the impact on the NCAP Report and propose an implementation plan to be reviewed by the community. Pending the review of the implementation plan, the RySG agrees that, based on the results of the research studies, the use of Candidate 1 (ffff::127.0.53.53) (also represented as (::ffff:7f00:3535)) as the AAAA record in the next round of Controlled Interruption activities is a good choice.