This document obsoletes RFC 3228. I have read both RFC 3228 and this document, they were both very short.

The new document changes registry policy for Type and Code fields in the IPv4 IGMP header from IESG Approval or Standards Action to Standards Action exclusively. It also creates new registries for Query Message Flags (in the Multicast Listener Query Message and the IGMPv3 Query Message) and Report Message Flags (in the Multicast Listener Report Message and the IGMPv3 Report Message). Each of them is populated with one entry, with Standards Action for future entries.

This is mostly a document about registry bookkeeping. I did not find any application related issues.

The main issue and only issue that I found is that the detailed (10 lines) security section was replaced with a one-liner in the new document, without references elsewhere. As a result, there are some registries, but other than "Standards Action", there is no advice at all for what should be considered when planning additional registrations.

Regards,    Martin.