Question on MLD

[Siva Veerepalli]

RFC2710 (MLD) states that when a General Membership Query is received, a 
node listening to the query sends a membership report for all multicast 
addresses it is listening to, excluding the all-nodes link-local multicast 
address and any multicast addresses of scope 0 (reserved) and 1 (node-local).

My question is, is the node required to send the membership report for 
solicited-node multicast address as well? In general, since nodes do not 
receive link-local scope multicast packets from out side the link, why is 
it required for the nodes to report membership to the router for *any* 
link-local scope multicast addresses?

Thanks,
Siva
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