dump multicast group management statistics per interface
NAME
ifmcstat – dump multicast group management statistics per interface
SYNOPSIS
ifmcstat [-iinterface] [-faddress-family] [-v]
DESCRIPTION
The ifmcstat command dumps multicast group information from the kernel.
The following options are supported:
-iinterface
specifies the interface to be displayed.
-faddress-family
specifies the address family to be displayed; inet, inet6 and link are supported.
-v
specifies that link-layer memberships should be printed; they are suppressed by default. It may not be specified for -flink. Source lists for each group will also be printed.
IMPLEMENTATION NOTES
ifmcstat will always print the embedded scope IDs of IPv6 multicast group memberships. This is because memberships are always scoped to an interface.
When run with the -v option, ifmcstat may print multicast MAC addresses twice if they are referenced by a layer 3 protocol.
