title: Iperf flow is not assigned to queue
body: <p>I'm new to ryu rest QoS. I'm trying to create QoS queue and divide bandwith link to two iperf flows. <br/> First flow max-rate is 300Kbps. <br/>Second flow min-rate is 700Kbps. <br/>Link bandwith is 1Mbps. <br/>Problem is both flow are using circa half link=500Kbs.</p>
  
  <p>Here is link to <a href="https://osrg.github.io/ryu-book/en/html/rest_qos.html#" rel="nofollow noreferrer">Ryu Rest QoS tutorial</a></p>
  
  <p><a href="https://i.stack.imgur.com/e1bqP.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/e1bqP.jpg" alt="iperf"></a></p>
  
  <p>localhost:8080/qos/queue/0000000000000001</p>
  
  <pre><code>[
     {
      "switch_id": "0000000000000001",
      "command_result": {
        "result": "success",
        "details": {
          "s1-eth1": {
            "0": {
              "config": {
                "max-rate": "300000"
              }
            },
            "1": {
              "config": {
                "min-rate": "700000"
              }
            }
          }
        }
      }
    }
  ]
  </code></pre>
  
  <p>localhost:8080/qos/rules/0000000000000001</p>
  
  <pre><code>[
    {
      "switch_id": "0000000000000001",
      "command_result": [
        {
          "qos": [
            {
              "priority": 1,
              "dl_type": "IPv4",
              "nw_proto": "UDP",
              "tp_dst": 5002,
              "qos_id": 1,
              "nw_dst": "10.0.0.1",
              "actions": [
                {
                  "queue": "1"
                }
              ]
            },
            {
              "priority": 1,
              "dl_type": "IPv4",
              "nw_proto": "UDP",
              "tp_dst": 5001,
              "qos_id": 2,
              "nw_dst": "10.0.0.1",
              "actions": [
                {
                  "queue": "0"
                }
              ]
            }
          ]
        }
      ]
    }
  ]
  </code></pre>