def in6_getifaddr():
    """
    Returns a list of 3-tuples of the form (addr, scope, iface) where
    'addr' is the address of scope 'scope' associated to the interface
    'iface'.

    This is the list of all addresses of all interfaces available on
    the system.
    """

    # List all network interfaces
    if OPENBSD:
        try:
            f = os.popen("%s" % conf.prog.ifconfig)
        except OSError:
            log_interactive.warning("Failed to execute ifconfig.")
            return []

        # Get the list of network interfaces
        splitted_line = []
        for l in f:
            if "flags" in l:
                iface = l.split()[0].rstrip(':')
                splitted_line.append(iface)

    else:  # FreeBSD, NetBSD or Darwin
        try:
            f = os.popen("%s -l" % conf.prog.ifconfig)
        except OSError:
            log_interactive.warning("Failed to execute ifconfig.")
            return []

        # Get the list of network interfaces
        splitted_line = f.readline().rstrip().split()

    ret = []
    for i in splitted_line:
        ret += _in6_getifaddr(i)
    return ret