@@ -903,6 +903,12 @@ func (container *Container) ReleaseNetwork() {

 		return

 	}

+	// If the container is not attached to any network do not try

+	// to release network and generate spurious error messages.

+	if container.NetworkSettings.NetworkID == "" {

+		return

+	}

+

 	n, err := container.daemon.netController.NetworkByID(container.NetworkSettings.NetworkID)

 	if err != nil {

 		logrus.Errorf("error locating network id %s: %v", container.NetworkSettings.NetworkID, err)