diff --git a/dist/images/install.sh b/dist/images/install.sh
index 1de0652aca5..6bf66af08b0 100755
--- a/dist/images/install.sh
+++ b/dist/images/install.sh
@@ -1412,8 +1412,6 @@ spec:
                   type: string
                 natOutgoing:
                   type: boolean
-                u2oRouting:
-                  type: boolean
                 externalEgressGateway:
                   type: string
                 policyRoutingPriority:
diff --git a/pkg/apis/kubeovn/v1/types.go b/pkg/apis/kubeovn/v1/types.go
index 7185fc68706..8843193749d 100644
--- a/pkg/apis/kubeovn/v1/types.go
+++ b/pkg/apis/kubeovn/v1/types.go
@@ -113,7 +113,6 @@ type SubnetSpec struct {
 	GatewayType string `json:"gatewayType,omitempty"`
 	GatewayNode string `json:"gatewayNode"`
 	NatOutgoing bool   `json:"natOutgoing"`
-	U2oRouting  bool   `json:"u2oRouting,omitempty"`
 
 	ExternalEgressGateway string `json:"externalEgressGateway,omitempty"`
 	PolicyRoutingPriority uint32 `json:"policyRoutingPriority,omitempty"`
diff --git a/pkg/daemon/handler.go b/pkg/daemon/handler.go
index 0cf587abf7e..0e3d90a051e 100644
--- a/pkg/daemon/handler.go
+++ b/pkg/daemon/handler.go
@@ -229,9 +229,9 @@ func (csh cniServerHandler) handleAdd(req *restful.Request, resp *restful.Respon
 		}
 
 		var mtu int
-		var node *v1.Node
 		if providerNetwork != "" {
-			if node, err = csh.Controller.nodesLister.Get(csh.Config.NodeName); err != nil {
+			node, err := csh.Controller.nodesLister.Get(csh.Config.NodeName)
+			if err != nil {
 				errMsg := fmt.Errorf("failed to get node %s: %v", csh.Config.NodeName, err)
 				klog.Error(errMsg)
 				if err = resp.WriteHeaderAndEntity(http.StatusInternalServerError, request.CniResponse{Err: errMsg.Error()}); err != nil {
@@ -254,63 +254,15 @@ func (csh cniServerHandler) handleAdd(req *restful.Request, resp *restful.Respon
 			mtu = csh.Config.MTU
 		}
 
-		// routes used for access from underlay to overlay
-		var u2oRoutes []request.Route
-		if podSubnet.Spec.U2oRouting && podSubnet.Spec.Vlan != "" &&
-			!podSubnet.Spec.LogicalGateway && podSubnet.Spec.Vpc == util.DefaultVpc {
-			subnets, err := csh.Controller.subnetsLister.List(labels.Everything())
-			if err != nil {
-				errMsg := fmt.Errorf("failed to list subnets: %v", err)
-				klog.Error(errMsg)
-				if err = resp.WriteHeaderAndEntity(http.StatusInternalServerError, request.CniResponse{Err: errMsg.Error()}); err != nil {
-					klog.Errorf("failed to write response: %v", err)
-				}
-				return
-			}
-
-			if node == nil {
-				if node, err = csh.Controller.nodesLister.Get(csh.Config.NodeName); err != nil {
-					errMsg := fmt.Errorf("failed to get node %s: %v", csh.Config.NodeName, err)
-					klog.Error(errMsg)
-					if err = resp.WriteHeaderAndEntity(http.StatusInternalServerError, request.CniResponse{Err: errMsg.Error()}); err != nil {
-						klog.Errorf("failed to write response: %v", err)
-					}
-					return
-				}
-			}
-
-			podCidrV4, podCidrV6 := util.SplitStringIP(cidr)
-			nodeIPv4, nodeIPv6 := util.GetNodeInternalIP(*node)
-			v4Routing := util.CIDRContainIP(podCidrV4, nodeIPv4)
-			v6Routing := util.CIDRContainIP(podCidrV6, nodeIPv6)
-			for _, subnet := range subnets {
-				if subnet.Spec.Vpc == util.DefaultVpc && (subnet.Spec.Vlan == "" || subnet.Spec.LogicalGateway) {
-					if !subnet.Status.IsReady() {
-						klog.V(5).Infof("subnet %s is not ready, skip", subnet.Name)
-						continue
-					}
-
-					cidrV4, cidrV6 := util.SplitStringIP(subnet.Spec.CIDRBlock)
-					if v4Routing && cidrV4 != "" {
-						u2oRoutes = append(u2oRoutes, request.Route{Destination: cidrV4, Gateway: nodeIPv4})
-					}
-					if v6Routing && cidrV6 != "" {
-						u2oRoutes = append(u2oRoutes, request.Route{Destination: cidrV6, Gateway: nodeIPv6})
-					}
-				}
-			}
-		}
-
-		klog.Infof("create container interface %s mac %s, ip %s, cidr %s, gw %s, u2o routes %v, custom routes %v", ifName, macAddr, ipAddr, cidr, gw, u2oRoutes, podRequest.Routes)
+		klog.Infof("create container interface %s mac %s, ip %s, cidr %s, gw %s, custom routes %v", ifName, macAddr, ipAddr, cidr, gw, podRequest.Routes)
 		detectIPConflict := podSubnet.Spec.Vlan != ""
-		allRoutes := append(u2oRoutes, podRequest.Routes...)
 		if nicType == util.InternalType {
-			podNicName, err = csh.configureNicWithInternalPort(podRequest.PodName, podRequest.PodNamespace, podRequest.Provider, podRequest.NetNs, podRequest.ContainerID, ifName, macAddr, mtu, ipAddr, gw, isDefaultRoute, detectIPConflict, allRoutes, podRequest.DNS.Nameservers, podRequest.DNS.Search, ingress, egress, priority, podRequest.DeviceID, nicType, latency, limit, loss, gatewayCheckMode, u2oInterconnectionIP)
+			podNicName, err = csh.configureNicWithInternalPort(podRequest.PodName, podRequest.PodNamespace, podRequest.Provider, podRequest.NetNs, podRequest.ContainerID, ifName, macAddr, mtu, ipAddr, gw, isDefaultRoute, detectIPConflict, podRequest.Routes, podRequest.DNS.Nameservers, podRequest.DNS.Search, ingress, egress, priority, podRequest.DeviceID, nicType, latency, limit, loss, gatewayCheckMode, u2oInterconnectionIP)
 		} else if nicType == util.DpdkType {
 			err = csh.configureDpdkNic(podRequest.PodName, podRequest.PodNamespace, podRequest.Provider, podRequest.NetNs, podRequest.ContainerID, ifName, macAddr, mtu, ipAddr, gw, ingress, egress, priority, getShortSharedDir(pod.UID, podRequest.VhostUserSocketVolumeName), podRequest.VhostUserSocketName)
 		} else {
 			podNicName = ifName
-			err = csh.configureNic(podRequest.PodName, podRequest.PodNamespace, podRequest.Provider, podRequest.NetNs, podRequest.ContainerID, podRequest.VfDriver, ifName, macAddr, mtu, ipAddr, gw, isDefaultRoute, detectIPConflict, allRoutes, podRequest.DNS.Nameservers, podRequest.DNS.Search, ingress, egress, priority, podRequest.DeviceID, nicType, latency, limit, loss, gatewayCheckMode, u2oInterconnectionIP)
+			err = csh.configureNic(podRequest.PodName, podRequest.PodNamespace, podRequest.Provider, podRequest.NetNs, podRequest.ContainerID, podRequest.VfDriver, ifName, macAddr, mtu, ipAddr, gw, isDefaultRoute, detectIPConflict, podRequest.Routes, podRequest.DNS.Nameservers, podRequest.DNS.Search, ingress, egress, priority, podRequest.DeviceID, nicType, latency, limit, loss, gatewayCheckMode, u2oInterconnectionIP)
 		}
 		if err != nil {
 			errMsg := fmt.Errorf("configure nic failed %v", err)
diff --git a/pkg/util/validator_test.go b/pkg/util/validator_test.go
index eab4f7e19a7..1f180546419 100644
--- a/pkg/util/validator_test.go
+++ b/pkg/util/validator_test.go
@@ -50,7 +50,6 @@ func TestValidateSubnet(t *testing.T) {
 					GatewayType:            "distributed",
 					GatewayNode:            "",
 					NatOutgoing:            false,
-					U2oRouting:             false,
 					ExternalEgressGateway:  "",
 					PolicyRoutingPriority:  0,
 					PolicyRoutingTableID:   0,
diff --git a/yamls/crd.yaml b/yamls/crd.yaml
index f5284b35a2b..78cc618d46f 100644
--- a/yamls/crd.yaml
+++ b/yamls/crd.yaml
@@ -789,8 +789,6 @@ spec:
                   type: string
                 natOutgoing:
                   type: boolean
-                u2oRouting:
-                  type: boolean
                 externalEgressGateway:
                   type: string
                 policyRoutingPriority: