'Update some details of the cloud IP address
@note: This is an API extension for use on Brightbox
:param  cloud_ip_id: The id of the cloud ip.
:type   cloud_ip_id: ``str``
:param      reverse_dns: Reverse DNS hostname
:type       reverse_dns: ``str``
:rtype: ``dict``'

def ex_update_cloud_ip(self, cloud_ip_id, reverse_dns):

    response = self._put(('/%s/cloud_ips/%s' % (self.api_version, cloud_ip_id)), {'reverse_dns': reverse_dns})
    return (response.status == httplib.OK)
