ipmaddr - adds, changes, deletes, and displays multicast addresses
ipmaddr [<operation>] [<args>]
This program is obsolete. Please use ip maddr instead, and see ip-maddress(8) for more information.
The ipmaddr command can perform one of the following operations:
add - add a multicast address
change - change a multicast address
del - delete a multicast address
show - list multicast addresses