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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_alias_address(iface_name, ip_mask, gw_str, metric):
 """ Get the correct source IP address of an interface alias """


    # Detect the architecture
    if scapy.consts.IS_64BITS:
        offset, name_len = 16, 40
    else:
        offset, name_len = 32, 32

    # Retrieve interfaces structures
    sck = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    names = array.array('B', b'\0' * 4096)
    ifreq = ioctl(sck.fileno(), SIOCGIFCONF,
                  struct.pack("iL", len(names), names.buffer_info()[0]))

    # Extract interfaces names
    out = struct.unpack("iL", ifreq)[0]
    names = names.tobytes() if six.PY3 else names.tostring()
    names = [names[i:i + offset].split(b'\0', 1)[0] for i in range(0, out, name_len)]  # noqa: E501

    # Look for the IP address
    for ifname in names:
        # Only look for a matching interface name
        if not ifname.decode("utf8").startswith(iface_name):
            continue

        # Retrieve and convert addresses
        ifreq = ioctl(sck, SIOCGIFADDR, struct.pack("16s16x", ifname))
        ifaddr = struct.unpack(">I", ifreq[20:24])[0]
        ifreq = ioctl(sck, SIOCGIFNETMASK, struct.pack("16s16x", ifname))
        msk = struct.unpack(">I", ifreq[20:24])[0]

        # Get the full interface name
        ifname = plain_str(ifname)
        if ':' in ifname:
            ifname = ifname[:ifname.index(':')]
        else:
            continue

        # Check if the source address is included in the network
        if (ifaddr & msk) == ip_mask:
            sck.close()
            return (ifaddr & msk, msk, gw_str, ifname,
                    scapy.utils.ltoa(ifaddr), metric)

    sck.close()
    return