diff --git a/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json
new file mode 100644
index 00000000000..c5f84c6f506
--- /dev/null
+++ b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json
@@ -0,0 +1,54 @@
+{
+  "kind": "IPAddress",
+  "apiVersion": "networking.k8s.io/v1alpha1",
+  "metadata": {
+    "name": "nameValue",
+    "generateName": "generateNameValue",
+    "namespace": "namespaceValue",
+    "selfLink": "selfLinkValue",
+    "uid": "uidValue",
+    "resourceVersion": "resourceVersionValue",
+    "generation": 7,
+    "creationTimestamp": "2008-01-01T01:01:01Z",
+    "deletionTimestamp": "2009-01-01T01:01:01Z",
+    "deletionGracePeriodSeconds": 10,
+    "labels": {
+      "labelsKey": "labelsValue"
+    },
+    "annotations": {
+      "annotationsKey": "annotationsValue"
+    },
+    "ownerReferences": [
+      {
+        "apiVersion": "apiVersionValue",
+        "kind": "kindValue",
+        "name": "nameValue",
+        "uid": "uidValue",
+        "controller": true,
+        "blockOwnerDeletion": true
+      }
+    ],
+    "finalizers": [
+      "finalizersValue"
+    ],
+    "managedFields": [
+      {
+        "manager": "managerValue",
+        "operation": "operationValue",
+        "apiVersion": "apiVersionValue",
+        "time": "2004-01-01T01:01:01Z",
+        "fieldsType": "fieldsTypeValue",
+        "fieldsV1": {},
+        "subresource": "subresourceValue"
+      }
+    ]
+  },
+  "spec": {
+    "parentRef": {
+      "group": "groupValue",
+      "resource": "resourceValue",
+      "namespace": "namespaceValue",
+      "name": "nameValue"
+    }
+  }
+}
\ No newline at end of file
diff --git a/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb
new file mode 100644
index 00000000000..7fceacd6bca
Binary files /dev/null and b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb differ
diff --git a/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml
new file mode 100644
index 00000000000..0bf2b17cb87
--- /dev/null
+++ b/staging/src/k8s.io/api/testdata/v1.27.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml
@@ -0,0 +1,40 @@
+apiVersion: networking.k8s.io/v1alpha1
+kind: IPAddress
+metadata:
+  annotations:
+    annotationsKey: annotationsValue
+  creationTimestamp: "2008-01-01T01:01:01Z"
+  deletionGracePeriodSeconds: 10
+  deletionTimestamp: "2009-01-01T01:01:01Z"
+  finalizers:
+  - finalizersValue
+  generateName: generateNameValue
+  generation: 7
+  labels:
+    labelsKey: labelsValue
+  managedFields:
+  - apiVersion: apiVersionValue
+    fieldsType: fieldsTypeValue
+    fieldsV1: {}
+    manager: managerValue
+    operation: operationValue
+    subresource: subresourceValue
+    time: "2004-01-01T01:01:01Z"
+  name: nameValue
+  namespace: namespaceValue
+  ownerReferences:
+  - apiVersion: apiVersionValue
+    blockOwnerDeletion: true
+    controller: true
+    kind: kindValue
+    name: nameValue
+    uid: uidValue
+  resourceVersion: resourceVersionValue
+  selfLink: selfLinkValue
+  uid: uidValue
+spec:
+  parentRef:
+    group: groupValue
+    name: nameValue
+    namespace: namespaceValue
+    resource: resourceValue
diff --git a/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json
new file mode 100644
index 00000000000..c5f84c6f506
--- /dev/null
+++ b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.json
@@ -0,0 +1,54 @@
+{
+  "kind": "IPAddress",
+  "apiVersion": "networking.k8s.io/v1alpha1",
+  "metadata": {
+    "name": "nameValue",
+    "generateName": "generateNameValue",
+    "namespace": "namespaceValue",
+    "selfLink": "selfLinkValue",
+    "uid": "uidValue",
+    "resourceVersion": "resourceVersionValue",
+    "generation": 7,
+    "creationTimestamp": "2008-01-01T01:01:01Z",
+    "deletionTimestamp": "2009-01-01T01:01:01Z",
+    "deletionGracePeriodSeconds": 10,
+    "labels": {
+      "labelsKey": "labelsValue"
+    },
+    "annotations": {
+      "annotationsKey": "annotationsValue"
+    },
+    "ownerReferences": [
+      {
+        "apiVersion": "apiVersionValue",
+        "kind": "kindValue",
+        "name": "nameValue",
+        "uid": "uidValue",
+        "controller": true,
+        "blockOwnerDeletion": true
+      }
+    ],
+    "finalizers": [
+      "finalizersValue"
+    ],
+    "managedFields": [
+      {
+        "manager": "managerValue",
+        "operation": "operationValue",
+        "apiVersion": "apiVersionValue",
+        "time": "2004-01-01T01:01:01Z",
+        "fieldsType": "fieldsTypeValue",
+        "fieldsV1": {},
+        "subresource": "subresourceValue"
+      }
+    ]
+  },
+  "spec": {
+    "parentRef": {
+      "group": "groupValue",
+      "resource": "resourceValue",
+      "namespace": "namespaceValue",
+      "name": "nameValue"
+    }
+  }
+}
\ No newline at end of file
diff --git a/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb
new file mode 100644
index 00000000000..7fceacd6bca
Binary files /dev/null and b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.pb differ
diff --git a/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml
new file mode 100644
index 00000000000..0bf2b17cb87
--- /dev/null
+++ b/staging/src/k8s.io/api/testdata/v1.28.0/networking.k8s.io.v1alpha1.IPAddress.after_roundtrip.yaml
@@ -0,0 +1,40 @@
+apiVersion: networking.k8s.io/v1alpha1
+kind: IPAddress
+metadata:
+  annotations:
+    annotationsKey: annotationsValue
+  creationTimestamp: "2008-01-01T01:01:01Z"
+  deletionGracePeriodSeconds: 10
+  deletionTimestamp: "2009-01-01T01:01:01Z"
+  finalizers:
+  - finalizersValue
+  generateName: generateNameValue
+  generation: 7
+  labels:
+    labelsKey: labelsValue
+  managedFields:
+  - apiVersion: apiVersionValue
+    fieldsType: fieldsTypeValue
+    fieldsV1: {}
+    manager: managerValue
+    operation: operationValue
+    subresource: subresourceValue
+    time: "2004-01-01T01:01:01Z"
+  name: nameValue
+  namespace: namespaceValue
+  ownerReferences:
+  - apiVersion: apiVersionValue
+    blockOwnerDeletion: true
+    controller: true
+    kind: kindValue
+    name: nameValue
+    uid: uidValue
+  resourceVersion: resourceVersionValue
+  selfLink: selfLinkValue
+  uid: uidValue
+spec:
+  parentRef:
+    group: groupValue
+    name: nameValue
+    namespace: namespaceValue
+    resource: resourceValue