diff --git a/operator/v1/0000_70_cluster-network-operator_01.crd.yaml b/operator/v1/0000_70_cluster-network-operator_01.crd.yaml
index 6ca60be271b..9fa5892cffd 100644
--- a/operator/v1/0000_70_cluster-network-operator_01.crd.yaml
+++ b/operator/v1/0000_70_cluster-network-operator_01.crd.yaml
@@ -396,6 +396,24 @@ spec:
                               messages, e.g. "kern". Default is "local0"
                             type: string
                         type: object
+                      v4InternalSubnet:
+                        description: v4InternalSubnet is a v4 subnet used internally
+                          by ovn-kubernetes in case the default one is being already
+                          used by something else. It must not overlap with any other
+                          subnet being used by OpenShift or by the node network. The
+                          size of the subnet must be larger than the number of nodes.
+                          The value cannot be changed after installation. Default
+                          is 100.64.0.0/16
+                        type: string
+                      v6InternalSubnet:
+                        description: v6InternalSubnet is a v6 subnet used internally
+                          by ovn-kubernetes in case the default one is being already
+                          used by something else. It must not overlap with any other
+                          subnet being used by OpenShift or by the node network. The
+                          size of the subnet must be larger than the number of nodes.
+                          The value cannot be changed after installation. Default
+                          is fd98::/48
+                        type: string
                     type: object
                   type:
                     description: type is the type of network All NetworkTypes are
diff --git a/operator/v1/types_network.go b/operator/v1/types_network.go
index e3bd64b0ea4..1c97401078c 100644
--- a/operator/v1/types_network.go
+++ b/operator/v1/types_network.go
@@ -411,6 +411,22 @@ type OVNKubernetesConfig struct {
 	// gatewayConfig holds the configuration for node gateway options.
 	// +optional
 	GatewayConfig *GatewayConfig `json:"gatewayConfig,omitempty"`
+	// v4InternalSubnet is a v4 subnet used internally by ovn-kubernetes in case the
+	// default one is being already used by something else. It must not overlap with
+	// any other subnet being used by OpenShift or by the node network. The size of the
+	// subnet must be larger than the number of nodes. The value cannot be changed
+	// after installation.
+	// Default is 100.64.0.0/16
+	// +optional
+	V4InternalSubnet string `json:"v4InternalSubnet,omitempty"`
+	// v6InternalSubnet is a v6 subnet used internally by ovn-kubernetes in case the
+	// default one is being already used by something else. It must not overlap with
+	// any other subnet being used by OpenShift or by the node network. The size of the
+	// subnet must be larger than the number of nodes. The value cannot be changed
+	// after installation.
+	// Default is fd98::/48
+	// +optional
+	V6InternalSubnet string `json:"v6InternalSubnet,omitempty"`
 }
 
 type HybridOverlayConfig struct {
diff --git a/operator/v1/zz_generated.swagger_doc_generated.go b/operator/v1/zz_generated.swagger_doc_generated.go
index 379c83a213e..810c5595a9a 100644
--- a/operator/v1/zz_generated.swagger_doc_generated.go
+++ b/operator/v1/zz_generated.swagger_doc_generated.go
@@ -1107,6 +1107,8 @@ var map_OVNKubernetesConfig = map[string]string{
 	"ipsecConfig":         "ipsecConfig enables and configures IPsec for pods on the pod network within the cluster.",
 	"policyAuditConfig":   "policyAuditConfig is the configuration for network policy audit events. If unset, reported defaults are used.",
 	"gatewayConfig":       "gatewayConfig holds the configuration for node gateway options.",
+	"v4InternalSubnet":    "v4InternalSubnet is a v4 subnet used internally by ovn-kubernetes in case the default one is being already used by something else. It must not overlap with any other subnet being used by OpenShift or by the node network. The size of the subnet must be larger than the number of nodes. The value cannot be changed after installation. Default is 100.64.0.0/16",
+	"v6InternalSubnet":    "v6InternalSubnet is a v6 subnet used internally by ovn-kubernetes in case the default one is being already used by something else. It must not overlap with any other subnet being used by OpenShift or by the node network. The size of the subnet must be larger than the number of nodes. The value cannot be changed after installation. Default is fd98::/48",
 }
 
 func (OVNKubernetesConfig) SwaggerDoc() map[string]string {