mld6query sends an IPv6 multicast listener discovery (MLD) query packet toward the specified multicast address,
maddr, toward interface
intface. If you omit
maddr, linklocal all nodes multicast address(ff02::1) is used.
After sending a query,
mld6query waits for replies for at most 10 seconds. If a reply is returned,
mld6query 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.
With
-d,
mld6query will transmit MLD done packet instead of MLD query packet. With
-r, similarly, MLD report packet will be transmitted.
-dr options are for debugging purposes only.