diff --git a/pkg/controller/controller.go b/pkg/controller/controller.go
index 01f86173ecc..107110beb92 100644
--- a/pkg/controller/controller.go
+++ b/pkg/controller/controller.go
@@ -680,11 +680,12 @@ func (c *Controller) Run(ctx context.Context) {
 		util.LogFatalAndExit(nil, "failed to wait for caches to sync")
 	}
 
-	if err := c.ovnLegacyClient.SetLsDnatModDlDst(c.config.LsDnatModDlDst); err != nil {
+	if err := c.ovnClient.SetLsDnatModDlDst(c.config.LsDnatModDlDst); err != nil {
 		util.LogFatalAndExit(err, "failed to set NB_Global option ls_dnat_mod_dl_dst")
 	}
-	if err := c.ovnLegacyClient.SetUseCtInvMatch(); err != nil {
-		util.LogFatalAndExit(err, "failed to set NB_Global option use_ct_inv_match")
+
+	if err := c.ovnClient.SetUseCtInvMatch(); err != nil {
+		util.LogFatalAndExit(err, "failed to set NB_Global option use_ct_inv_match to false")
 	}
 
 	if err := c.InitDefaultVpc(); err != nil {
diff --git a/pkg/controller/init.go b/pkg/controller/init.go
index 8deb380fce9..225eed36dbb 100644
--- a/pkg/controller/init.go
+++ b/pkg/controller/init.go
@@ -32,7 +32,7 @@ func (c *Controller) InitOVN() error {
 		}
 		v4Svc, _ := util.SplitStringIP(c.config.ServiceClusterIPRange)
 		if v4Svc != "" {
-			if err := c.ovnLegacyClient.SetLBCIDR(v4Svc); err != nil {
+			if err := c.ovnClient.SetLBCIDR(v4Svc); err != nil {
 				klog.Errorf("init load balancer svc cidr failed: %v", err)
 				return err
 			}
diff --git a/pkg/controller/ovn-ic.go b/pkg/controller/ovn-ic.go
index d34826910d7..ad620f4c6c0 100644
--- a/pkg/controller/ovn-ic.go
+++ b/pkg/controller/ovn-ic.go
@@ -87,7 +87,7 @@ func (c *Controller) resyncInterConnection() {
 				blackList = append(blackList, ipv6)
 			}
 		}
-		if err := c.ovnLegacyClient.SetICAutoRoute(autoRoute, blackList); err != nil {
+		if err := c.ovnClient.SetICAutoRoute(autoRoute, blackList); err != nil {
 			klog.Errorf("failed to config auto route, %v", err)
 			return
 		}
diff --git a/pkg/ovs/ovn-nbctl-legacy.go b/pkg/ovs/ovn-nbctl-legacy.go
index 725e3ccd2ca..5822fdca136 100644
--- a/pkg/ovs/ovn-nbctl-legacy.go
+++ b/pkg/ovs/ovn-nbctl-legacy.go
@@ -74,41 +74,6 @@ func (c LegacyClient) GetVersion() (string, error) {
 	return c.Version, nil
 }
 
-func (c LegacyClient) SetAzName(azName string) error {
-	if _, err := c.ovnNbCommand("set", "NB_Global", ".", fmt.Sprintf("name=%s", azName)); err != nil {
-		return fmt.Errorf("failed to set az name, %v", err)
-	}
-	return nil
-}
-
-func (c LegacyClient) SetLsDnatModDlDst(enabled bool) error {
-	if _, err := c.ovnNbCommand("set", "NB_Global", ".", fmt.Sprintf("options:ls_dnat_mod_dl_dst=%v", enabled)); err != nil {
-		return fmt.Errorf("failed to set NB_Global option ls_dnat_mod_dl_dst to %v: %v", enabled, err)
-	}
-	return nil
-}
-
-func (c LegacyClient) SetUseCtInvMatch() error {
-	if _, err := c.ovnNbCommand("set", "NB_Global", ".", "options:use_ct_inv_match=false"); err != nil {
-		return fmt.Errorf("failed to set NB_Global option use_ct_inv_match to false: %v", err)
-	}
-	return nil
-}
-
-func (c LegacyClient) SetICAutoRoute(enable bool, blackList []string) error {
-	if enable {
-		if _, err := c.ovnNbCommand("set", "NB_Global", ".", "options:ic-route-adv=true", "options:ic-route-learn=true", fmt.Sprintf("options:ic-route-blacklist=%s", strings.Join(blackList, ","))); err != nil {
-			return fmt.Errorf("failed to enable ovn-ic auto route, %v", err)
-		}
-		return nil
-	} else {
-		if _, err := c.ovnNbCommand("set", "NB_Global", ".", "options:ic-route-adv=false", "options:ic-route-learn=false"); err != nil {
-			return fmt.Errorf("failed to disable ovn-ic auto route, %v", err)
-		}
-		return nil
-	}
-}
-
 // DeleteLogicalSwitchPort delete logical switch port in ovn
 func (c LegacyClient) DeleteLogicalSwitchPort(port string) error {
 	klog.Infof("delete lsp %s", port)