network: Speedup function device_get_mac.

diff --git a/functions.device b/functions.device
index 3fe531ffbdced86d24bc6cc9e1d8bfbbfc28f481..025e178a15c65f41566feeb9af70f4da86281ef2 100644 (file)
--- a/functions.device
+++ b/functions.device
@@ -400,7 +400,7 @@ function device_get_mtu() {
                return ${EXIT_ERROR}
        fi
 
-       cat ${SYS_CLASS_NET}/${device}/mtu
+       echo $(<${SYS_CLASS_NET}/${device}/mtu)
 }
 
 # Set mtu to a device