':class:`tuple`: Kernel version of the remote machine.'

@property
def version(self):

    try:
        self._init_remote_platform_info()
        vers = self._platform_info['release']
        expr = '([0-9]+\\.?)+'
        vers = re.search(expr, vers).group()
        return tuple(map(int, vers.split('.')))
    except Exception:
        return (0, 0, 0)
