RFC 3810, "Multicast Listener Discovery Version 2 (MLDv2) for IPv6", June 2004

Note: This RFC has been updated by RFC 4604

Errata ID: 8029
Status: Verified
Type: Editorial
Publication Format(s) : TEXT
Reported By: Marco Seravalli
Date Reported: 2024-07-12
Verifier Name: RFC Editor
Date Verified: 2024-07-12

Section 2.2 says:

   Both Multicast Address Specific Queries and Multicast Address and
   Source Specific Queries are only sent in response to State Change
   Reports, never in response to Current State Reports.  This
   distinction between the two types of reports is needed to avoid the
   router treating all Multicast Listener Reports as potential changes
   in state.  By doing so, the fast leave mechanism of MLDv2, described
   in more detail in section 2.2, might not be effective if a State
   Change Report is lost, and only the following Current State Report is
   received by the router.  Nevertheless, it avoids an increased
   processing at the router and it reduces the MLD traffic on the link.
   More details on the necessity of distinguishing between the two
   report types can be found in Appendix A1.

It should say:

   Both Multicast Address Specific Queries and Multicast Address and
   Source Specific Queries are only sent in response to State Change
   Reports, never in response to Current State Reports.  This
   distinction between the two types of reports is needed to avoid the
   router treating all Multicast Listener Reports as potential changes
   in state.  By doing so, the fast leave mechanism of MLDv2, described
   in more detail in section 2.3, might not be effective if a State
   Change Report is lost, and only the following Current State Report is
   received by the router.  Nevertheless, it avoids an increased
   processing at the router and it reduces the MLD traffic on the link.
   More details on the necessity of distinguishing between the two
   report types can be found in Appendix A1.

Notes:

IIUC the fast leave mechanism is not explain in section 2.2 but in 2.3

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