diff --git a/neutron_tempest_plugin/api/base.py b/neutron_tempest_plugin/api/base.py
index 7ea22e6..532fa43 100644
--- a/neutron_tempest_plugin/api/base.py
+++ b/neutron_tempest_plugin/api/base.py
@@ -546,8 +546,7 @@
         """
 
         if not cls.try_reserve_subnet_cidr(addr, **ipnetwork_kwargs):
-            raise ValueError('Subnet CIDR already reserved: {0!r}'.format(
-                addr))
+            LOG.info("Subnet CIDR already reserved: %r", addr)
 
     @classmethod
     def try_reserve_subnet_cidr(cls, addr, **ipnetwork_kwargs):