'Requests a new cloud IP address for the account
@note: This is an API extension for use on Brightbox
:param      reverse_dns: Reverse DNS hostname
:type       reverse_dns: ``str``
:rtype: ``dict``'

def ex_create_cloud_ip(self, reverse_dns=None):

    params = {}
    if reverse_dns:
        params['reverse_dns'] = reverse_dns
    return self._post(('/%s/cloud_ips' % self.api_version), params).object
