commit b1f1c8aa50012d09b7a81abfb99d02e0c457fc8c
Author: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Date:   Wed Sep 23 16:35:45 2020 +0000

    Reduce log level in "ensure_device_is_ready"
    
    If the device is not ready, the method should inform about this
    event. The code calling this method, if needed, can write a higher
    log message.
    
    Change-Id: Ib7c5ba736f6e4ccc88df665faeef304c176a24e7
    Closes-Bug: #1896920

diff --git a/neutron/agent/linux/ip_lib.py b/neutron/agent/linux/ip_lib.py
index 99fe71b..bd23a3d 100644
--- a/neutron/agent/linux/ip_lib.py
+++ b/neutron/agent/linux/ip_lib.py
@@ -958,8 +958,8 @@ def ensure_device_is_ready(device_name, namespace=None):
         # Ensure the device has a MAC address and is up, even if it is already
         # up.
         if not dev.link.exists or not dev.link.address:
-            LOG.error("Device %s cannot be used as it has no MAC "
-                      "address", device_name)
+            LOG.info("Device %s cannot be used as it has no MAC "
+                     "address", device_name)
             return False
         dev.link.set_up()
     except RuntimeError: