ifmcstat8
Dump multicast group management statistics per interface
Usage
ifmcstat [-i
interface]
[-f
address-family]
[-v]
Overview
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
-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.
Releases
70 releases since FreeBSD 4.0-RELEASE; the text changed 39 times.
- 4.0
- 4.1–4.3
- 4.4–4.7
- 4.8–4.11
- 5.0–5.5
- 6.0–6.2
- 6.3
- 6.4
- 7.0
- 7.1
- 7.2
- 7.3
- 7.4
- 8.0
- 8.1
- 8.2
- 8.3
- 8.4
- 9.0
- 9.1
- 9.2
- 9.3
- 10.0
- 10.1
- 10.2
- 10.3
- 10.4
- 11.0
- 11.1
- 11.2
- 11.3
- 11.4
- 12.0
- 12.1
- 12.2
- 12.3
- 12.4
- 13.0–13.2
- 13.3–15.1
- 16.0
-f since FreeBSD 6.3-RELEASE;
-i since FreeBSD 6.3-RELEASE;
-v since FreeBSD 8.0-RELEASE.
-K until FreeBSD 15.1-RELEASE;
-M until FreeBSD 15.1-RELEASE;
-N until FreeBSD 15.1-RELEASE.