IGMPv3
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... GMP", or "SFGMP", will be used to refer
jointly to the IGMPv3 and MLDv2 group management protocols.
...
... service model; this document defines the concrete application
of those requirements to systems that implement IGMPv3 and MLDv2. In
doing so, this document defines modifications to the host ...
... API (e.g., "join(G)",
"IPMulticastListen(G,EXCLUDE(S1))" for IGMPv3, or
"IPv6MulticastListen(G,EXCLUDE(S2))" for MLDv2 ...
... host MAY allow an older-version
report to suppress its own IGMPv3 or MLDv2 Membership Record. An
SSM ...
... router sends periodic SFGMP General Queries as per the IGMPv3
and MLDv2 specifications. No change in behavior is required for SSM ...
... create any security concerns that are not already
present when IGMPv3 or MLDv2 is used with ASM-style multicast ...
... group in question. If the router were to revert in this
situation, it would prevent an IGMPv3-capable host from receiving SSM ...