diff --git a/pkg/cni-plugin/plugin/ovs.go b/pkg/cni-plugin/plugin/ovs.go
index 66e0a1eb5..a6dd25fe6 100644
--- a/pkg/cni-plugin/plugin/ovs.go
+++ b/pkg/cni-plugin/plugin/ovs.go
@@ -42,7 +42,7 @@ func (sw *ovsClient) AddPort(bridge, port string, vlanId int) error {
 		Bridge: bridge,
 		Port:   port,
 	}))*/
-	args := []string{"add-port", bridge, port}
+	args := []string{"--may-exist", "add-port", bridge, port}
 	if vlanId > 1 {
 		args = append(args, fmt.Sprintf("tag=%d", vlanId))
 	}