diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index 52cac37b953..b73823d2903 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -11497,14 +11497,14 @@
       "type": "object"
     },
     "io.k8s.api.networking.v1.IPBlock": {
-      "description": "IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
+      "description": "IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\",\"2001:db9::/64\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
       "properties": {
         "cidr": {
-          "description": "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\"",
+          "description": "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\"",
           "type": "string"
         },
         "except": {
-          "description": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" Except values will be rejected if they are outside the CIDR range",
+          "description": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\" Except values will be rejected if they are outside the CIDR range",
           "items": {
             "type": "string"
           },
diff --git a/pkg/apis/networking/types.go b/pkg/apis/networking/types.go
index ac4aad78dab..1b2d04f149d 100644
--- a/pkg/apis/networking/types.go
+++ b/pkg/apis/networking/types.go
@@ -144,15 +144,15 @@ type NetworkPolicyPort struct {
 	Port *intstr.IntOrString
 }
 
-// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods
-// matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should
-// not be included within this rule.
+// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24","2001:db9::/64") that is allowed
+// to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
+// that should not be included within this rule.
 type IPBlock struct {
 	// CIDR is a string representing the IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	CIDR string
 	// Except is a slice of CIDRs that should not be included within an IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	// Except values will be rejected if they are outside the CIDR range
 	// +optional
 	Except []string
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/generated.proto b/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
index 5086e78c605..56b08a11028 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
@@ -458,16 +458,16 @@ message IDRange {
 }
 
 // DEPRECATED 1.9 - This group version of IPBlock is deprecated by networking/v1/IPBlock.
-// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods
-// matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should
-// not be included within this rule.
+// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24","2001:db9::/64") that is allowed
+// to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
+// that should not be included within this rule.
 message IPBlock {
   // CIDR is a string representing the IP Block
-  // Valid examples are "192.168.1.1/24"
+  // Valid examples are "192.168.1.1/24" or "2001:db9::/64"
   optional string cidr = 1;
 
   // Except is a slice of CIDRs that should not be included within an IP Block
-  // Valid examples are "192.168.1.1/24"
+  // Valid examples are "192.168.1.1/24" or "2001:db9::/64"
   // Except values will be rejected if they are outside the CIDR range
   // +optional
   repeated string except = 2;
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/types.go b/staging/src/k8s.io/api/extensions/v1beta1/types.go
index c1318f280ad..effd4b84478 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/types.go
+++ b/staging/src/k8s.io/api/extensions/v1beta1/types.go
@@ -1334,15 +1334,15 @@ type NetworkPolicyPort struct {
 }
 
 // DEPRECATED 1.9 - This group version of IPBlock is deprecated by networking/v1/IPBlock.
-// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods
-// matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should
-// not be included within this rule.
+// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24","2001:db9::/64") that is allowed
+// to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
+// that should not be included within this rule.
 type IPBlock struct {
 	// CIDR is a string representing the IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	CIDR string `json:"cidr" protobuf:"bytes,1,name=cidr"`
 	// Except is a slice of CIDRs that should not be included within an IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	// Except values will be rejected if they are outside the CIDR range
 	// +optional
 	Except []string `json:"except,omitempty" protobuf:"bytes,2,rep,name=except"`
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go b/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
index 880f52235be..cde7884d7b3 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
+++ b/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
@@ -269,9 +269,9 @@ func (IDRange) SwaggerDoc() map[string]string {
 }
 
 var map_IPBlock = map[string]string{
-	"":       "DEPRECATED 1.9 - This group version of IPBlock is deprecated by networking/v1/IPBlock. IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
-	"cidr":   "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\"",
-	"except": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" Except values will be rejected if they are outside the CIDR range",
+	"":       "DEPRECATED 1.9 - This group version of IPBlock is deprecated by networking/v1/IPBlock. IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\",\"2001:db9::/64\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
+	"cidr":   "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\"",
+	"except": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\" Except values will be rejected if they are outside the CIDR range",
 }
 
 func (IPBlock) SwaggerDoc() map[string]string {
diff --git a/staging/src/k8s.io/api/networking/v1/generated.proto b/staging/src/k8s.io/api/networking/v1/generated.proto
index 3cb73804526..f2aa96900c5 100644
--- a/staging/src/k8s.io/api/networking/v1/generated.proto
+++ b/staging/src/k8s.io/api/networking/v1/generated.proto
@@ -30,16 +30,16 @@ import "k8s.io/apimachinery/pkg/util/intstr/generated.proto";
 // Package-wide variables from generator "generated".
 option go_package = "v1";
 
-// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods
-// matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should
-// not be included within this rule.
+// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24","2001:db9::/64") that is allowed
+// to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
+// that should not be included within this rule.
 message IPBlock {
   // CIDR is a string representing the IP Block
-  // Valid examples are "192.168.1.1/24"
+  // Valid examples are "192.168.1.1/24" or "2001:db9::/64"
   optional string cidr = 1;
 
   // Except is a slice of CIDRs that should not be included within an IP Block
-  // Valid examples are "192.168.1.1/24"
+  // Valid examples are "192.168.1.1/24" or "2001:db9::/64"
   // Except values will be rejected if they are outside the CIDR range
   // +optional
   repeated string except = 2;
diff --git a/staging/src/k8s.io/api/networking/v1/types.go b/staging/src/k8s.io/api/networking/v1/types.go
index 38a640f0b9c..73580a50cfb 100644
--- a/staging/src/k8s.io/api/networking/v1/types.go
+++ b/staging/src/k8s.io/api/networking/v1/types.go
@@ -147,15 +147,15 @@ type NetworkPolicyPort struct {
 	Port *intstr.IntOrString `json:"port,omitempty" protobuf:"bytes,2,opt,name=port"`
 }
 
-// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24") that is allowed to the pods
-// matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should
-// not be included within this rule.
+// IPBlock describes a particular CIDR (Ex. "192.168.1.1/24","2001:db9::/64") that is allowed
+// to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs
+// that should not be included within this rule.
 type IPBlock struct {
 	// CIDR is a string representing the IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	CIDR string `json:"cidr" protobuf:"bytes,1,name=cidr"`
 	// Except is a slice of CIDRs that should not be included within an IP Block
-	// Valid examples are "192.168.1.1/24"
+	// Valid examples are "192.168.1.1/24" or "2001:db9::/64"
 	// Except values will be rejected if they are outside the CIDR range
 	// +optional
 	Except []string `json:"except,omitempty" protobuf:"bytes,2,rep,name=except"`
diff --git a/staging/src/k8s.io/api/networking/v1/types_swagger_doc_generated.go b/staging/src/k8s.io/api/networking/v1/types_swagger_doc_generated.go
index 188b72a1cac..b404e5b1169 100644
--- a/staging/src/k8s.io/api/networking/v1/types_swagger_doc_generated.go
+++ b/staging/src/k8s.io/api/networking/v1/types_swagger_doc_generated.go
@@ -28,9 +28,9 @@ package v1
 
 // AUTO-GENERATED FUNCTIONS START HERE. DO NOT EDIT.
 var map_IPBlock = map[string]string{
-	"":       "IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
-	"cidr":   "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\"",
-	"except": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" Except values will be rejected if they are outside the CIDR range",
+	"":       "IPBlock describes a particular CIDR (Ex. \"192.168.1.1/24\",\"2001:db9::/64\") that is allowed to the pods matched by a NetworkPolicySpec's podSelector. The except entry describes CIDRs that should not be included within this rule.",
+	"cidr":   "CIDR is a string representing the IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\"",
+	"except": "Except is a slice of CIDRs that should not be included within an IP Block Valid examples are \"192.168.1.1/24\" or \"2001:db9::/64\" Except values will be rejected if they are outside the CIDR range",
 }
 
 func (IPBlock) SwaggerDoc() map[string]string {