I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the security area directors.
Document editors and WG chairs should treat these comments just like any other last-call comments.

This draft is to reserve .alt as the Special-Use Domain Names. Section 1 says that the technique is to address problems discussed in RFC8244. After reading the RFC8244, I learned RFC8244 covers many more problems, not just the .alt Special-Use Domain Names. Suggest adding the specific section of the RFC8244 for reference. 

Question: Are the .local and  .onion part of the Special-use domain names registered in IANA? 

Thank you very much, 
Linda Dunbar