Reviewer: Steve Hanna Review result: Ready This document states that the IETF will stop working on IPv4, with certain exceptions. While this document is controversial and concerns have been expressed regarding the wisdom of adopting it, I don't see any security concerns related to adopting it. In fact, the document clearly states that "the IETF needs to continue to update IPv4-only protocols and features for vital operational or security issues." Therefore, I don't foresee any security issues related to adopting the document.