diff --git a/service/controller/controller.go b/service/controller/controller.go
index 2c53606..30926dc 100644
--- a/service/controller/controller.go
+++ b/service/controller/controller.go
@@ -211,6 +211,14 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 	var nodeInfoChanged = false
 	// If nodeInfo changed
 	if !reflect.DeepEqual(c.nodeInfo, newNodeInfo) {
+		// Add DNS
+		if !reflect.DeepEqual(c.nodeInfo.NameServerConfig, newNodeInfo.NameServerConfig) {
+			log.Printf("%s Reload DNS service", c.logPrefix())
+			if err := c.addNewDNS(newNodeInfo); err != nil {
+				log.Print(err)
+				return nil
+			}
+		}
 		// Remove old tag
 		oldTag := c.Tag
 		err := c.removeOldTag(oldTag)
@@ -265,12 +273,6 @@ func (c *Controller) nodeInfoMonitor() (err error) {
 			return nil
 		}
 
-		// Add DNS
-		log.Printf("%s Reload DNS service", c.logPrefix())
-		if err := c.addNewDNS(newNodeInfo); err != nil {
-			log.Print(err)
-			return nil
-		}
 	} else {
 		var deleted, added []api.UserInfo
 		if usersChanged {