MLD6QUERY(8) MidnightBSD System Manager’s Manual MLD6QUERY(8)


mld6query — send multicast listener query


mld6query [−dr] intface [maddr]


The mld6query utility 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.


The program exits with 0 on success, non-zero on failures.


The mld6query utility first appeared in WIDE/KAME IPv6 protocol stack kit.


The mld6query utility does not take care of multicast addresses which have non link-local scope.

MidnightBSD 0.3 May 17, 1998 MidnightBSD 0.3