GET /reverse/floatingips/%s returns wrong record

1) Create several floating IPs
2) Attempt to list one of them using Desginate v2 API. No matter which floating ip is requested, data for the same ip is returned.

Example: Request id = 20a..., but response is always id = 185...

request:
GET http://192.168.56.101:9001/v2/reverse/floatingips/RegionOne:20a5fda3-79e2-4068-803f-ca1b7bac3908

response:
{"status": "ACTIVE", "ptrdname": null, "description": null, "links": {"self": "http://192.168.56.101:9001/v2/reverse/floatingips/RegionOne:18512296-d57f-4388-8dda-51bf475c7285"}, "ttl": null, "address": "172.24.4.6", "action": null, "id": "RegionOne:18512296-d57f-4388-8dda-51bf475c7285"}