e belonging to the local network or loopback. These include: * Private ranges: 10.*, 172.16.* - 172.31.*, 192.168.* * Loopback: 127.* .. versionadded:: 1.1.0 :param str address: string to be checked :returns: **True** if input is in a private range, **False** otherwise :raises: **ValueError** if the address isn't a valid IPv4 address z