---
name: "ifmcstat"
section: "8"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/ifmcstat"
---

# ifmcstat(8)

dump multicast group management statistics per interface

## NAME

**ifmcstat** – dump multicast group management statistics per interface

## SYNOPSIS

**ifmcstat** \[**-i** *interface*\] \[**-f** *address-family*\] \[**-v**\]

## DESCRIPTION

The **ifmcstat** command dumps multicast group information from the kernel.

The following options are supported:

- **-i** *interface*

  specifies the interface to be displayed.

- **-f** *address-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 **-f** *link*. 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.

## SEE ALSO

[netstat(1)](/netstat/1.md), [getifaddrs(3)](/getifaddrs/3.md), [getifmaddrs(3)](/getifmaddrs/3.md),