diff --git a/api/openapi-spec/v3/api__v1_openapi.json b/api/openapi-spec/v3/api__v1_openapi.json
index 28b7d5db427..91952d6d27b 100644
--- a/api/openapi-spec/v3/api__v1_openapi.json
+++ b/api/openapi-spec/v3/api__v1_openapi.json
@@ -2873,6 +2873,7 @@
             "type": "string"
           },
           "iscsiInterface": {
+            "default": "default",
             "description": "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
             "type": "string"
           },
@@ -2941,6 +2942,7 @@
             "type": "string"
           },
           "iscsiInterface": {
+            "default": "default",
             "description": "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
             "type": "string"
           },
diff --git a/api/openapi-spec/v3/apis__apps__v1_openapi.json b/api/openapi-spec/v3/apis__apps__v1_openapi.json
index 70d936f76e3..457c2593347 100644
--- a/api/openapi-spec/v3/apis__apps__v1_openapi.json
+++ b/api/openapi-spec/v3/apis__apps__v1_openapi.json
@@ -2772,6 +2772,7 @@
             "type": "string"
           },
           "iscsiInterface": {
+            "default": "default",
             "description": "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
             "type": "string"
           },
diff --git a/api/openapi-spec/v3/apis__batch__v1_openapi.json b/api/openapi-spec/v3/apis__batch__v1_openapi.json
index 906fe2ae4d0..1f5a8e6dd76 100644
--- a/api/openapi-spec/v3/apis__batch__v1_openapi.json
+++ b/api/openapi-spec/v3/apis__batch__v1_openapi.json
@@ -2121,6 +2121,7 @@
             "type": "string"
           },
           "iscsiInterface": {
+            "default": "default",
             "description": "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
             "type": "string"
           },
diff --git a/api/openapi-spec/v3/apis__storage.k8s.io__v1_openapi.json b/api/openapi-spec/v3/apis__storage.k8s.io__v1_openapi.json
index c8deff6e0de..2f62a958f62 100644
--- a/api/openapi-spec/v3/apis__storage.k8s.io__v1_openapi.json
+++ b/api/openapi-spec/v3/apis__storage.k8s.io__v1_openapi.json
@@ -427,6 +427,7 @@
             "type": "string"
           },
           "iscsiInterface": {
+            "default": "default",
             "description": "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
             "type": "string"
           },
diff --git a/pkg/apis/apps/v1/zz_generated.defaults.go b/pkg/apis/apps/v1/zz_generated.defaults.go
index 311e3b7f28f..1a79d95c508 100644
--- a/pkg/apis/apps/v1/zz_generated.defaults.go
+++ b/pkg/apis/apps/v1/zz_generated.defaults.go
@@ -55,7 +55,9 @@ func SetObjectDefaults_DaemonSet(in *v1.DaemonSet) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -338,7 +340,9 @@ func SetObjectDefaults_Deployment(in *v1.Deployment) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -621,7 +625,9 @@ func SetObjectDefaults_ReplicaSet(in *v1.ReplicaSet) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -904,7 +910,9 @@ func SetObjectDefaults_StatefulSet(in *v1.StatefulSet) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/apps/v1beta1/zz_generated.defaults.go b/pkg/apis/apps/v1beta1/zz_generated.defaults.go
index 9ad86cd0036..18c2296a5fa 100644
--- a/pkg/apis/apps/v1beta1/zz_generated.defaults.go
+++ b/pkg/apis/apps/v1beta1/zz_generated.defaults.go
@@ -51,7 +51,9 @@ func SetObjectDefaults_Deployment(in *v1beta1.Deployment) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -334,7 +336,9 @@ func SetObjectDefaults_StatefulSet(in *v1beta1.StatefulSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/apps/v1beta2/zz_generated.defaults.go b/pkg/apis/apps/v1beta2/zz_generated.defaults.go
index ec66300a7a4..31e368bd3dc 100644
--- a/pkg/apis/apps/v1beta2/zz_generated.defaults.go
+++ b/pkg/apis/apps/v1beta2/zz_generated.defaults.go
@@ -55,7 +55,9 @@ func SetObjectDefaults_DaemonSet(in *v1beta2.DaemonSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -338,7 +340,9 @@ func SetObjectDefaults_Deployment(in *v1beta2.Deployment) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -621,7 +625,9 @@ func SetObjectDefaults_ReplicaSet(in *v1beta2.ReplicaSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -904,7 +910,9 @@ func SetObjectDefaults_StatefulSet(in *v1beta2.StatefulSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/batch/v1/zz_generated.defaults.go b/pkg/apis/batch/v1/zz_generated.defaults.go
index 8d9d0e7f8b2..3aec42c6b2d 100644
--- a/pkg/apis/batch/v1/zz_generated.defaults.go
+++ b/pkg/apis/batch/v1/zz_generated.defaults.go
@@ -51,7 +51,9 @@ func SetObjectDefaults_CronJob(in *v1.CronJob) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -334,7 +336,9 @@ func SetObjectDefaults_Job(in *v1.Job) {
 			corev1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/batch/v1beta1/zz_generated.defaults.go b/pkg/apis/batch/v1beta1/zz_generated.defaults.go
index 0beaf7e319c..619b015fe98 100644
--- a/pkg/apis/batch/v1beta1/zz_generated.defaults.go
+++ b/pkg/apis/batch/v1beta1/zz_generated.defaults.go
@@ -49,7 +49,9 @@ func SetObjectDefaults_CronJob(in *v1beta1.CronJob) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/core/v1/defaults.go b/pkg/apis/core/v1/defaults.go
index 88c97eb6464..a23b9b5340f 100644
--- a/pkg/apis/core/v1/defaults.go
+++ b/pkg/apis/core/v1/defaults.go
@@ -311,16 +311,6 @@ func SetDefaults_PersistentVolumeClaimSpec(obj *v1.PersistentVolumeClaimSpec) {
 		*obj.VolumeMode = v1.PersistentVolumeFilesystem
 	}
 }
-func SetDefaults_ISCSIVolumeSource(obj *v1.ISCSIVolumeSource) {
-	if obj.ISCSIInterface == "" {
-		obj.ISCSIInterface = "default"
-	}
-}
-func SetDefaults_ISCSIPersistentVolumeSource(obj *v1.ISCSIPersistentVolumeSource) {
-	if obj.ISCSIInterface == "" {
-		obj.ISCSIInterface = "default"
-	}
-}
 func SetDefaults_AzureDiskVolumeSource(obj *v1.AzureDiskVolumeSource) {
 	if obj.CachingMode == nil {
 		obj.CachingMode = new(v1.AzureDataDiskCachingMode)
diff --git a/pkg/apis/core/v1/zz_generated.defaults.go b/pkg/apis/core/v1/zz_generated.defaults.go
index 264928c7e00..66c631004a0 100644
--- a/pkg/apis/core/v1/zz_generated.defaults.go
+++ b/pkg/apis/core/v1/zz_generated.defaults.go
@@ -148,7 +148,9 @@ func SetObjectDefaults_PersistentVolume(in *v1.PersistentVolume) {
 		}
 	}
 	if in.Spec.PersistentVolumeSource.ISCSI != nil {
-		SetDefaults_ISCSIPersistentVolumeSource(in.Spec.PersistentVolumeSource.ISCSI)
+		if in.Spec.PersistentVolumeSource.ISCSI.ISCSIInterface == "" {
+			in.Spec.PersistentVolumeSource.ISCSI.ISCSIInterface = "default"
+		}
 	}
 	if in.Spec.PersistentVolumeSource.AzureDisk != nil {
 		SetDefaults_AzureDiskVolumeSource(in.Spec.PersistentVolumeSource.AzureDisk)
@@ -194,7 +196,9 @@ func SetObjectDefaults_Pod(in *v1.Pod) {
 			SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -527,7 +531,9 @@ func SetObjectDefaults_PodTemplate(in *v1.PodTemplate) {
 			SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -811,7 +817,9 @@ func SetObjectDefaults_ReplicationController(in *v1.ReplicationController) {
 				SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 			}
 			if a.VolumeSource.ISCSI != nil {
-				SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+				if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+					a.VolumeSource.ISCSI.ISCSIInterface = "default"
+				}
 			}
 			if a.VolumeSource.RBD != nil {
 				if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/extensions/v1beta1/zz_generated.defaults.go b/pkg/apis/extensions/v1beta1/zz_generated.defaults.go
index ec2c637f9ce..ad931fadf2e 100644
--- a/pkg/apis/extensions/v1beta1/zz_generated.defaults.go
+++ b/pkg/apis/extensions/v1beta1/zz_generated.defaults.go
@@ -57,7 +57,9 @@ func SetObjectDefaults_DaemonSet(in *v1beta1.DaemonSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -340,7 +342,9 @@ func SetObjectDefaults_Deployment(in *v1beta1.Deployment) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
@@ -653,7 +657,9 @@ func SetObjectDefaults_ReplicaSet(in *v1beta1.ReplicaSet) {
 			v1.SetDefaults_SecretVolumeSource(a.VolumeSource.Secret)
 		}
 		if a.VolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIVolumeSource(a.VolumeSource.ISCSI)
+			if a.VolumeSource.ISCSI.ISCSIInterface == "" {
+				a.VolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if a.VolumeSource.RBD != nil {
 			if a.VolumeSource.RBD.RBDPool == "" {
diff --git a/pkg/apis/storage/v1/zz_generated.defaults.go b/pkg/apis/storage/v1/zz_generated.defaults.go
index b09bfc9799c..6b7cf3b495d 100644
--- a/pkg/apis/storage/v1/zz_generated.defaults.go
+++ b/pkg/apis/storage/v1/zz_generated.defaults.go
@@ -80,7 +80,9 @@ func SetObjectDefaults_VolumeAttachment(in *v1.VolumeAttachment) {
 			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI != nil {
-			corev1.SetDefaults_ISCSIPersistentVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI)
+			if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface == "" {
+				in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk != nil {
 			corev1.SetDefaults_AzureDiskVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk)
diff --git a/pkg/apis/storage/v1alpha1/zz_generated.defaults.go b/pkg/apis/storage/v1alpha1/zz_generated.defaults.go
index 99b3c45bede..109f0683f65 100644
--- a/pkg/apis/storage/v1alpha1/zz_generated.defaults.go
+++ b/pkg/apis/storage/v1alpha1/zz_generated.defaults.go
@@ -54,7 +54,9 @@ func SetObjectDefaults_VolumeAttachment(in *v1alpha1.VolumeAttachment) {
 			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIPersistentVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI)
+			if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface == "" {
+				in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk != nil {
 			v1.SetDefaults_AzureDiskVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk)
diff --git a/pkg/apis/storage/v1beta1/zz_generated.defaults.go b/pkg/apis/storage/v1beta1/zz_generated.defaults.go
index 2bba6b55831..35c6dd9b656 100644
--- a/pkg/apis/storage/v1beta1/zz_generated.defaults.go
+++ b/pkg/apis/storage/v1beta1/zz_generated.defaults.go
@@ -80,7 +80,9 @@ func SetObjectDefaults_VolumeAttachment(in *v1beta1.VolumeAttachment) {
 			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI != nil {
-			v1.SetDefaults_ISCSIPersistentVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI)
+			if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface == "" {
+				in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.ISCSI.ISCSIInterface = "default"
+			}
 		}
 		if in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk != nil {
 			v1.SetDefaults_AzureDiskVolumeSource(in.Spec.Source.InlineVolumeSpec.PersistentVolumeSource.AzureDisk)
diff --git a/pkg/generated/openapi/zz_generated.openapi.go b/pkg/generated/openapi/zz_generated.openapi.go
index c8fd9217a5f..96eb2e67f28 100644
--- a/pkg/generated/openapi/zz_generated.openapi.go
+++ b/pkg/generated/openapi/zz_generated.openapi.go
@@ -23113,6 +23113,7 @@ func schema_k8sio_api_core_v1_ISCSIPersistentVolumeSource(ref common.ReferenceCa
 					"iscsiInterface": {
 						SchemaProps: spec.SchemaProps{
 							Description: "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
+							Default:     "default",
 							Type:        []string{"string"},
 							Format:      "",
 						},
@@ -23221,6 +23222,7 @@ func schema_k8sio_api_core_v1_ISCSIVolumeSource(ref common.ReferenceCallback) co
 					"iscsiInterface": {
 						SchemaProps: spec.SchemaProps{
 							Description: "iscsiInterface is the interface Name that uses an iSCSI transport. Defaults to 'default' (tcp).",
+							Default:     "default",
 							Type:        []string{"string"},
 							Format:      "",
 						},
diff --git a/staging/src/k8s.io/api/core/v1/generated.proto b/staging/src/k8s.io/api/core/v1/generated.proto
index 11e6638dbf0..8e0a730bf64 100644
--- a/staging/src/k8s.io/api/core/v1/generated.proto
+++ b/staging/src/k8s.io/api/core/v1/generated.proto
@@ -2045,6 +2045,7 @@ message ISCSIPersistentVolumeSource {
   // iscsiInterface is the interface Name that uses an iSCSI transport.
   // Defaults to 'default' (tcp).
   // +optional
+  // +default="default"
   optional string iscsiInterface = 4;
 
   // fsType is the filesystem type of the volume that you want to mount.
@@ -2102,6 +2103,7 @@ message ISCSIVolumeSource {
   // iscsiInterface is the interface Name that uses an iSCSI transport.
   // Defaults to 'default' (tcp).
   // +optional
+  // +default="default"
   optional string iscsiInterface = 4;
 
   // fsType is the filesystem type of the volume that you want to mount.
diff --git a/staging/src/k8s.io/api/core/v1/types.go b/staging/src/k8s.io/api/core/v1/types.go
index a74ee3c4131..df9890cc38e 100644
--- a/staging/src/k8s.io/api/core/v1/types.go
+++ b/staging/src/k8s.io/api/core/v1/types.go
@@ -1436,6 +1436,7 @@ type ISCSIVolumeSource struct {
 	// iscsiInterface is the interface Name that uses an iSCSI transport.
 	// Defaults to 'default' (tcp).
 	// +optional
+	// +default="default"
 	ISCSIInterface string `json:"iscsiInterface,omitempty" protobuf:"bytes,4,opt,name=iscsiInterface"`
 	// fsType is the filesystem type of the volume that you want to mount.
 	// Tip: Ensure that the filesystem type is supported by the host operating system.
@@ -1483,6 +1484,7 @@ type ISCSIPersistentVolumeSource struct {
 	// iscsiInterface is the interface Name that uses an iSCSI transport.
 	// Defaults to 'default' (tcp).
 	// +optional
+	// +default="default"
 	ISCSIInterface string `json:"iscsiInterface,omitempty" protobuf:"bytes,4,opt,name=iscsiInterface"`
 	// fsType is the filesystem type of the volume that you want to mount.
 	// Tip: Ensure that the filesystem type is supported by the host operating system.
diff --git a/staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go b/staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go
index f2235f31a1a..416567b649b 100644
--- a/staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go
+++ b/staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go
@@ -5702,6 +5702,7 @@ var schemaYAML = typed.YAMLObject(`types:
     - name: iscsiInterface
       type:
         scalar: string
+      default: default
     - name: lun
       type:
         scalar: numeric
@@ -5744,6 +5745,7 @@ var schemaYAML = typed.YAMLObject(`types:
     - name: iscsiInterface
       type:
         scalar: string
+      default: default
     - name: lun
       type:
         scalar: numeric