diff --git a/kuryr_kubernetes/controller/drivers/utils.py b/kuryr_kubernetes/controller/drivers/utils.py
index 8156cf7a3..f5c34aba8 100644
--- a/kuryr_kubernetes/controller/drivers/utils.py
+++ b/kuryr_kubernetes/controller/drivers/utils.py
@@ -25,7 +25,6 @@ from kuryr_kubernetes import constants
 from kuryr_kubernetes import exceptions as k_exc
 from kuryr_kubernetes import utils
 
-from neutronclient.common import exceptions as n_exc
 
 OPERATORS_WITH_VALUES = [constants.K8S_OPERATOR_IN,
                          constants.K8S_OPERATOR_NOT_IN]
@@ -422,7 +421,7 @@ def tag_neutron_resources(resources):
     for res in resources:
         try:
             os_net.set_tags(res, tags=tags)
-        except n_exc.NeutronClientException:
+        except os_exc.SDKException:
             LOG.warning("Failed to tag %s with %s. Ignoring, but this is "
                         "still unexpected.", res, tags, exc_info=True)
 
diff --git a/kuryr_kubernetes/controller/handlers/namespace.py b/kuryr_kubernetes/controller/handlers/namespace.py
index e2ce67ccf..38f7dffb5 100644
--- a/kuryr_kubernetes/controller/handlers/namespace.py
+++ b/kuryr_kubernetes/controller/handlers/namespace.py
@@ -15,6 +15,7 @@
 import eventlet
 import time
 
+from openstack import exceptions as os_exc
 from oslo_cache import core as cache
 from oslo_config import cfg as oslo_cfg
 from oslo_log import log as logging
@@ -28,8 +29,6 @@ from kuryr_kubernetes import exceptions
 from kuryr_kubernetes.handlers import k8s_base
 from kuryr_kubernetes import utils
 
-from neutronclient.common import exceptions as n_exc
-from openstack import exceptions as os_exc
 
 LOG = logging.getLogger(__name__)
 
@@ -115,7 +114,7 @@ class NamespaceHandler(k8s_base.ResourceEventHandler):
         try:
             net_crd_sg = self._drv_sg.create_namespace_sg(ns_name, project_id,
                                                           net_crd_spec)
-        except n_exc.NeutronClientException:
+        except os_exc.SDKException:
             LOG.exception("Error creating security group for the namespace. "
                           "Rolling back created network resources.")
             self._drv_subnets.rollback_network_resources(net_crd_spec, ns_name)
diff --git a/kuryr_kubernetes/controller/handlers/policy.py b/kuryr_kubernetes/controller/handlers/policy.py
index 3c6ed493c..3adf28aeb 100644
--- a/kuryr_kubernetes/controller/handlers/policy.py
+++ b/kuryr_kubernetes/controller/handlers/policy.py
@@ -12,8 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from neutronclient.common import exceptions as n_exc
-from openstack import exceptions as o_exc
+from openstack import exceptions as os_exc
 from oslo_cache import core as cache
 from oslo_config import cfg as oslo_cfg
 from oslo_log import log as logging
@@ -120,7 +119,7 @@ class NetworkPolicyHandler(k8s_base.ResourceEventHandler):
                             oslo_cfg.OptGroup('neutron_defaults'))
                 try:
                     self._drv_vif_pool.update_vif_sgs(pod, pod_sgs)
-                except (n_exc.NotFound, o_exc.NotFoundException):
+                except os_exc.NotFoundException:
                     LOG.debug("Fail to update pod sgs."
                               " Retrying policy deletion.")
                     raise exceptions.ResourceNotReady(policy)
diff --git a/kuryr_kubernetes/controller/managers/pool.py b/kuryr_kubernetes/controller/managers/pool.py
index d35855777..99e17788b 100644
--- a/kuryr_kubernetes/controller/managers/pool.py
+++ b/kuryr_kubernetes/controller/managers/pool.py
@@ -18,8 +18,7 @@ import threading
 from six.moves.BaseHTTPServer import BaseHTTPRequestHandler
 from six.moves.socketserver import ThreadingUnixStreamServer
 
-from neutronclient.common import exceptions as n_exc
-
+from openstack import exceptions as os_exc
 from oslo_config import cfg as oslo_cfg
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
@@ -165,11 +164,11 @@ class RequestHandler(BaseHTTPRequestHandler):
             try:
                 drv_vif_pool.force_populate_pool(
                     trunk_ip, project_id, subnets, security_groups, num_ports)
-            except n_exc.Conflict:
+            except os_exc.ConflictException:
                 LOG.error("VLAN Id conflict (already in use) at trunk %s",
                           trunk_ip)
                 raise
-            except n_exc.NeutronClientException:
+            except os_exc.SDKException:
                 LOG.exception("Error happened during subports addition at "
                               "trunk: %s", trunk_ip)
                 raise
diff --git a/kuryr_kubernetes/handlers/retry.py b/kuryr_kubernetes/handlers/retry.py
index 2501004bd..75532b2b3 100644
--- a/kuryr_kubernetes/handlers/retry.py
+++ b/kuryr_kubernetes/handlers/retry.py
@@ -17,6 +17,7 @@ import itertools
 import time
 
 from neutronclient.common import exceptions as n_exc
+from openstack import exceptions as os_exc
 from oslo_log import log as logging
 from oslo_utils import excutils
 
@@ -78,9 +79,18 @@ class Retry(base.EventHandler):
                 self._handler(event)
                 break
             except n_exc.OverQuotaClient:
+                # NOTE(gryf): this exception handling should be removed after
+                # nested_macvlan_driver convertion to OpenStackSDK.
                 with excutils.save_and_reraise_exception() as ex:
                     if self._sleep(deadline, attempt, ex.value):
                         ex.reraise = False
+            except os_exc.ConflictException as ex:
+                if ex.details.startswith('Quota exceeded for resources'):
+                    with excutils.save_and_reraise_exception() as ex:
+                        if self._sleep(deadline, attempt, ex.value):
+                            ex.reraise = False
+                else:
+                    raise
             except self._exceptions:
                 with excutils.save_and_reraise_exception() as ex:
                     if self._sleep(deadline, attempt, ex.value):