mld6query(8) [netbsd man page]

MLD6QUERY(8)						    BSD System Manager's Manual 					      MLD6QUERY(8)

NAME

     mld6query -- send multicast listener query

SYNOPSIS

     mld6query [-dr] intface [maddr]

DESCRIPTION

     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.

EXIT STATUS

     The program exits 0 on success, and >0 on failures.

HISTORY

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

BUGS

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

BSD
								   May 17, 1998 							       BSD

mcfirst(1)						      General Commands Manual							mcfirst(1)

NAME

       mcfirst - check if you can receive IPv4/IPv6 multicast

SYNOPSIS

       mcfirst [ -46vr ] [ -I interface ] [ -c count ] [ -t time ] [ source ] group port

DESCRIPTION

       mcfirst	can  be  used to check whether one can receive multicast packets from a host. The host may send any type of multicast packets, any
       application, IPv4 or IPv6, ASM or SSM.  mcfirst joins the specified (source) and group, and listens to the specified port.  mcfirst will by
       default exit when the first packet is received, and print how long it waited.

OPTIONS

       The options are as follows.

       -4     Force IPv4

       -6     Force IPv6

       -v     Print version

       -r     Print rate information only

       -I interface
	      Interface to join on

       -c count
	      Stop after receiving count packets. Default is 1 unless time limit is specified

       -t time
	      Exit  after time seconds. Default is to exit after the first packet. If both count and time are specified, mcfirst will exit as soon
	      as one of them is satisfied.

SEE ALSO

       ssmping(1) a tool for checking whether can receive SSM.

       dbeacon(1) a distributed beacon multicast implementation.

BUGS

       Please report them to Stig Venaas <venaas@uninett.no>, the author of this tool.

HISTORY

       mcfirst was developed by Stig Venaas during the early days of the m6bone, the IPv6 multicast backbone.

								   User Manuals 							mcfirst(1)