diff --git a/e2e/net-attach-def_test.go b/e2e/net-attach-def_test.go
new file mode 100644
index 0000000..2bed667
--- /dev/null
+++ b/e2e/net-attach-def_test.go
@@ -0,0 +1,80 @@
+package e2e
+
+import (
+	"context"
+	"fmt"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+
+	netv1 "github.com/k8snetworkplumbingwg/network-attachment-definition-client/pkg/apis/k8s.cni.cncf.io/v1"
+
+	selfservicev1 "github.com/AlonaKaplan/selfserviceoverlay/api/v1"
+)
+
+const overlayNetworkKind = "OverlayNetwork"
+
+var _ = Describe("OverlayNetwork controller, net-attach-def lifecycle", func() {
+	It("should create and delete net-attach-def according to OverlayNetwork state", func() {
+		By("Create test OverlayNetwork instance")
+		ovrlyNet := newTestOverlayNetwork(TestsNamespace, "test")
+		Expect(RuntimeClient.Create(context.Background(), ovrlyNet)).To(Succeed())
+
+		By("Assert a corresponding net-attach-def has been created")
+		nad := &netv1.NetworkAttachmentDefinition{}
+		nadKey := types.NamespacedName{Namespace: ovrlyNet.Namespace, Name: ovrlyNet.Name}
+		Eventually(func() error {
+			return RuntimeClient.Get(context.Background(), nadKey, nad)
+		}).Should(Succeed(), "1m", "3s")
+
+		By("Assert overlay-network corresponding net-attach-def object")
+		assertOverlayNetworkNetAttachDef(ovrlyNet, nad)
+
+		By("Delete test OverlayNetwork instance")
+		Expect(RuntimeClient.Delete(context.Background(), ovrlyNet)).To(Succeed())
+
+		By("Assert the corresponding net-attach-def is deleted by and not exist")
+		Eventually(func() bool {
+			return errors.IsNotFound(RuntimeClient.Get(context.Background(), nadKey, nad))
+		}).Should(BeTrue(), "1m", "3s",
+			"the overlay-network corresponding net-attach-def should be disposed")
+	})
+})
+
+func assertOverlayNetworkNetAttachDef(overlyNet *selfservicev1.OverlayNetwork, nad *netv1.NetworkAttachmentDefinition) {
+	expectedNetAttachName := overlyNet.Namespace + "/" + overlyNet.Name
+	expectedCniNetConf := fmt.Sprintf(`{	
+		"name":"test",
+		"type":"ovn-k8s-cni-overlay",				
+		"netAttachDefName": "%s",
+		"topology":"layer2"
+	}`, expectedNetAttachName)
+
+	Expect(nad.Spec.Config).To(MatchJSON(expectedCniNetConf))
+
+	expectedOwnerReference := metav1.OwnerReference{
+		APIVersion: selfservicev1.GroupVersion.String(), // "self.service.ovn.org/netv1",
+		Kind:       overlayNetworkKind,
+		Name:       overlyNet.Name,
+		UID:        overlyNet.UID,
+	}
+
+	Expect(nad.ObjectMeta.OwnerReferences).To(Equal([]metav1.OwnerReference{expectedOwnerReference}))
+}
+
+func newTestOverlayNetwork(namespace, name string) *selfservicev1.OverlayNetwork {
+	return &selfservicev1.OverlayNetwork{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       overlayNetworkKind,
+			APIVersion: selfservicev1.GroupVersion.Version,
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      name,
+			Namespace: namespace,
+		},
+		Spec: selfservicev1.OverlayNetworkSpec{},
+	}
+}