diff --git a/network/nm_custom_type.go b/network/nm_custom_type.go
index dde1666ab..ad7548fb1 100644
--- a/network/nm_custom_type.go
+++ b/network/nm_custom_type.go
@@ -5,8 +5,8 @@
 package network
 
 import (
-	_ "github.com/linuxdeepin/go-lib/gettext"
 	"github.com/linuxdeepin/dde-daemon/network/nm"
+	_ "github.com/linuxdeepin/go-lib/gettext"
 )
 
 // Custom device types, use string instead of number, used by front-end
@@ -69,7 +69,7 @@ func getCustomDeviceType(devType uint32) (customDevType string) {
 		return deviceWifiP2p
 	case nm.NM_DEVICE_TYPE_UNKNOWN:
 	default:
-		logger.Error("unknown device type", devType)
+		logger.Debug("unknown device type", devType)
 	}
 	return deviceUnknown
 }
diff --git a/network/utils_dbus_nm.go b/network/utils_dbus_nm.go
index 582ee99a0..10dcb9724 100644
--- a/network/utils_dbus_nm.go
+++ b/network/utils_dbus_nm.go
@@ -195,7 +195,7 @@ func nmGeneralGetDeviceHwAddr(devPath dbus.ObjectPath, perm bool) (hwAddr string
 		err = fmt.Errorf("there is no hardware address for device modem, adsl, tun")
 	default:
 		err = fmt.Errorf("unknown device type %d", devType)
-		logger.Error(err)
+		logger.Debug(err)
 	}
 	hwAddr = strings.ToUpper(hwAddr)
 	return