Home
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
Utilities & Libraries
Utilities Reference
I
ifmcstat
Dump multicast group management statistics per interface

QNX Momentics IDE User's Guide
This User's Guide describes version 7.1 of the Integrated Development Environment (IDE) that's part of the QNX Momentics tool suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
- Quickstart Guide
- OS Components & Operations
- Audio & Graphics API
- Multimedia
- Networking Middleware
- Programming
- Sensor Framework
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX Neutrino RTOS system and developers who want to create a QNX Neutrino resource manager free from vulnerabilities.
- Utilities & Libraries
  - Addon Interfaces Library Reference
  - C Library Reference
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - Utilities Reference
    - Utility Conventions
    - A
    - B
    - C
    - D
    - E
    - F
    - G
    - H
    - I
      - id
        Return user and group IDs (POSIX)
      - if_up
        Ensure a TCP/IP interface is available
      - ifconfig
        Configure network interface parameters
      - ifmcstat
        Dump multicast group management statistics per interface
      - ifwatchd
        Watch for addresses added to or deleted from interfaces and call up/down-scripts for them
      - indent
        Format C source
      - inetd
        Internet super-server (UNIX)
      - /etc/inetd.conf
        Super-server configuration file (UNIX)
      - inflator
        Inflate previously deflated files
      - infocmp
        Output the contents of a terminfo capability file (UNIX)
      - io
        Read from and write to I/O registers and memory (QNX Neutrino)
      - io-audio
        Start one or more audio drivers
      - io-blk.so
        Block I/O support
      - io-hid
        Manager for human-interface devices (HID)
      - io-pkt-v4-hc, io-pkt-v6-hc
        Networking manager
      - io-usb-otg
        USB On-The-Go (OTG) server
      - iperf2
        Perform network throughput tests
      - iperf3
        Perform network throughput tests
      - isend
        Execute DCMD_I2C_SEND devctl()
      - isendrecv
        Execute DCMD_I2C_SENDRECV devctl()
    - J
    - K
    - L
    - M
    - N
    - O
    - P
    - Q
    - R
    - S
    - T
    - U
    - V
    - W
    - X
    - Y
    - Z
    - Commonly Used Environment Variables
    - Selecting the Target System
    - Glossary
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
QNX Hypervisor
The QNX Hypervisor allows you to run multiple OSs on a target system so you can separate critical and non-critical functions, support a wide variety of applications, and reduce hardware costs.
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX software in Amazon Web Services (AWS) and Microsoft Azure (Azure).
QNX Advanced Virtualization Frameworks User's Guide
This User's Guide is aimed at all systems integrators and developers who want to design and build embedded systems using the QNX Advanced Virtualization Frameworks.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support.

ifmcstat

Dump multicast group management statistics per interface

Syntax:

ifmcstat

Runs on:

QNX Neutrino

Options:

None.

Description:

The ifmcstat utility dumps multicast group management statistics per interface.

Contributing author:

NetBSD

Page updated: March 12, 2026