"type": "host-local",
    "subnet": "10.1.0.0/16",
    "gateway": "10.1.0.1",
    "routes": [
      {
        "dst": "0.0.0.0/0"
      }
    ]
  },
  "isGateway": true,
  "mtu": 1460,
  "name": "rkt.kubernetes.io",
  "type": "bridge"

          {
            "dst": "0.0.0.0/0"
          }
        ],
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "isGateway": true,
      "mtu": 1460,
      "name": "rkt.kubernetes.io",
      "type": "bridge"
    }
  ]

{
  "name": "rkt.kubernetes.io",
  "bridge": "mybridge",
  "mtu": 1460,
  "addIf": "true",
  "isGateway": true,
  "ipMasq": true,
  "ipam": {
    "type": "host-local",
    "subnet": "10.1.0.0/16",
    "gateway": "10.1.0.1",
    "routes": [
      {
        "dst": "0.0.0.0/0"
      }
    ]
  }

          {
            "dst": "0.0.0.0/0"
          }
        ],
        "subnet": "10.1.0.0/16",
        "type": "host-local"
      },
      "isGateway": true,
      "mtu": 1460,
      "name": "rkt.kubernetes.io",
      "type": "bridge"
    },
    {
      "ambient_enabled": false,
      "cni_agent_run_dir": "/tmp",
      "dns": {},
      "exclude_namespaces": [
        "istio-system"
      ],

  * Docker versions as old as may 1.9.1 work with [known issues](CHANGELOG.md#191) but this is not guaranteed
* rkt version 1.21.0
  * known issues with the rkt runtime are [listed here](http://kubernetes.io/docs/getting-started-guides/rkt/notes/)
* etcd version 2.2.1

      - [kubectl](#kubectl)
      - [kubernetes Core Known Issues](#kubernetes-core-known-issues)
      - [Docker runtime Known Issues](#docker-runtime-known-issues)
      - [Rkt runtime Known Issues](#rkt-runtime-known-issues)
  - [Provider-specific Notes](#provider-specific-notes)
  - [Previous Releases Included in v1.3.0](#previous-releases-included-in-v130)
- [v1.3.0-beta.3](#v130-beta3)

* Add get/delete cluster, delete context to kubectl config ([#29821](https://github.com/kubernetes/kubernetes/pull/29821), [@alexbrand](https://github.com/alexbrand))
* rkt: Force `rkt fetch` to fetch from remote to conform the image pull policy. ([#31378](https://github.com/kubernetes/kubernetes/pull/31378), [@yifan-gu](https://github.com/yifan-gu))

  * Support for Docker version 1.9.x has been removed
* rkt version 1.23.0+
  * known issues with the rkt runtime are [listed in the Getting Started Guide](http://kubernetes.io/docs/getting-started-guides/rkt/notes/)
* etcd version 3.0.17
## Changelog since v1.6.0-rc.1


### Previous Releases Included in v1.6.0

* For issues with Docker 1.13.X please see the [1.13.X tracking issue](https://github.com/kubernetes/kubernetes/issues/42926)

* rkt version 1.23.0+

    * known issues with the rkt runtime are [listed in the Getting Started Guide](https://kubernetes.io/docs/getting-started-guides/rkt/notes/)

* etcd version 3.0.17

- k8s.io/utils: 581e001 → e782cd3
- sigs.k8s.io/structured-merge-diff: 6149e45 → b1b620d

#### Removed
- github.com/cloudflare/cfssl: 56268a6
- github.com/coreos/bbolt: v1.3.3
- github.com/coreos/rkt: v1.30.0
- github.com/globalsign/mgo: eeefdec
- github.com/google/certificate-transparency-go: v1.0.21
- github.com/heketi/rest: aa6a652
- github.com/heketi/utils: 435bc5b
- github.com/pborman/uuid: v1.2.0