def _ipconfig_getnode():
    """Get the hardware address on Windows by running ipconfig.exe."""
    import os, re
    dirs = ['', r'c:\windows\system32', r'c:\winnt\system32']
    try:
        import ctypes
        buffer = ctypes.create_string_buffer(300)
        ctypes.windll.kernel32.GetSystemDirectoryA(buffer, 300)  # @UndefinedVariable
        dirs.insert(0, buffer.value.decode('mbcs'))
    except:
        pass
    for dir in dirs:
        try:
            pipe = os.popen(os.path.join(dir, 'ipconfig') + ' /all')
        except IOError:
            continue
        for line in pipe:
            value = line.split(':')[-1].strip().lower()
            if re.match('([0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]', value):
                return int(value.replace('-', ''), 16)
Get the hardware address on Windows by running ipconfig.exe.
debugger/src/_pydev_imps/_pydev_uuid_old.py