diff --git a/neutron_plugin_contrail/plugins/opencontrail/contrail_plugin_base.py b/neutron_plugin_contrail/plugins/opencontrail/contrail_plugin_base.py
index 63b689e..bbf190e 100644
--- a/neutron_plugin_contrail/plugins/opencontrail/contrail_plugin_base.py
+++ b/neutron_plugin_contrail/plugins/opencontrail/contrail_plugin_base.py
@@ -39,6 +39,10 @@
 except ImportError:
     from oslo_log import log as logging
 
+try:
+    from neutron_lib import exceptions as libexc
+except ImportError:
+    libexc = None
 
 # Constant for max length of network interface names
 # eg 'bridge' in the Network class or 'devname' in
@@ -92,6 +96,8 @@ def _raise_contrail_error(info, obj_name):
                 raise getattr(securitygroup, exc_name)(**info)
             if hasattr(allowedaddresspairs, exc_name):
                 raise getattr(allowedaddresspairs, exc_name)(**info)
+            if libexc and hasattr(libexc, exc_name):
+                raise getattr(libexc, exc_name)(**info)
         raise exc.NeutronException(**info)