utility sends an IPv6 multicast listener discovery (MLD) query packet toward
the specified multicast address,
If you omit
linklocal all nodes multicast address(ff02::1) is used.
After sending a query,
waits for replies for at most 10 seconds.
If a reply is returned,
prints it with its type and then waits for another reply.
This program is provided only for debugging.
It is not necessary for normal use.
will transmit MLD done packet instead of MLD query packet.
similarly, MLD report packet will be transmitted.
options are for debugging purposes only.