On 2/25/11 5:28 AM, Colin O'Flynn wrote:
Hi Anders,
RFC4861 uses the same wording, where it means you just listen on the
all-nodes multicast address. There is no explicit join method.
I'm not sure in which RFC it describes joining the multicast group. I would
guess RFC4291 as that describes multicast addressing, but there might be
somewhere better.
It is in RFC 2710 on MLD; it describes that "join" implies.
MLD has an explicit exception for all-nodes as in
The link-scope all-nodes address (FF02::1) is handled as a special
case. The node starts in Idle Listener state for that address on
every interface, never transitions to another state, and never sends
a Report or Done for that address.
For other multicast addresses, including link-locals, the expectation is
that the host would join using MLD.
Note that 6lowpan-nd doesn't require hosts to join the solicited node
multicast address; that would have required sending MLD reports to
comply with RFC 2710.
Erik
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