Merge "Add mac info to test_list_virtual_interfaces"
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index 85f0041..7aa6d34 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -57,4 +57,5 @@
for virt_iface in virt_ifaces['virtual_interfaces']:
mac_address = virt_iface['mac_address']
self.assertTrue(netaddr.valid_mac(mac_address),
- "Invalid mac address detected.")
+ "Invalid mac address detected. mac address: %s"
+ % mac_address)