diff --git a/neutronclient/_i18n.py b/neutronclient/_i18n.py
new file mode 100644
index 0000000..f5aa76b
--- /dev/null
+++ b/neutronclient/_i18n.py
@@ -0,0 +1,41 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import oslo_i18n
+
+
+DOMAIN = 'neutronclient'
+
+_translators = oslo_i18n.TranslatorFactory(domain=DOMAIN)
+
+# The primary translation function using the well-known name "_"
+_ = _translators.primary
+
+# The contextual translation function using the name "_C"
+_C = _translators.contextual_form
+
+# The plural translation function using the name "_P"
+_P = _translators.plural_form
+
+# Translators for log levels.
+#
+# The abbreviated names are meant to reflect the usual use of a short
+# name like '_'. The "L" is for "log" and the other letter comes from
+# the level.
+_LI = _translators.log_info
+_LW = _translators.log_warning
+_LE = _translators.log_error
+_LC = _translators.log_critical
+
+
+def get_available_languages():
+    return oslo_i18n.get_available_languages(DOMAIN)
diff --git a/neutronclient/client.py b/neutronclient/client.py
index 7707630..445d3af 100644
--- a/neutronclient/client.py
+++ b/neutronclient/client.py
@@ -25,9 +25,9 @@ from keystoneauth1 import access
 from keystoneauth1 import adapter
 import requests
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 
 _logger = logging.getLogger(__name__)
 
diff --git a/neutronclient/common/exceptions.py b/neutronclient/common/exceptions.py
index e051d5f..95f54f7 100644
--- a/neutronclient/common/exceptions.py
+++ b/neutronclient/common/exceptions.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 
 """
 Neutron base exception handling.
diff --git a/neutronclient/common/serializer.py b/neutronclient/common/serializer.py
index e094c26..828e17f 100644
--- a/neutronclient/common/serializer.py
+++ b/neutronclient/common/serializer.py
@@ -18,8 +18,8 @@ import logging
 from oslo_serialization import jsonutils
 import six
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions as exception
-from neutronclient.i18n import _
 
 LOG = logging.getLogger(__name__)
 
diff --git a/neutronclient/common/utils.py b/neutronclient/common/utils.py
index 388d5e6..9c05675 100644
--- a/neutronclient/common/utils.py
+++ b/neutronclient/common/utils.py
@@ -26,8 +26,8 @@ from oslo_utils import encodeutils
 from oslo_utils import importutils
 import six
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
-from neutronclient.i18n import _
 
 
 def env(*vars, **kwargs):
diff --git a/neutronclient/common/validators.py b/neutronclient/common/validators.py
index 304ba35..831d68e 100644
--- a/neutronclient/common/validators.py
+++ b/neutronclient/common/validators.py
@@ -15,8 +15,8 @@
 
 import netaddr
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
-from neutronclient.i18n import _
 
 
 def validate_int_range(parsed_args, attr_name, min_value=None, max_value=None):
diff --git a/neutronclient/i18n.py b/neutronclient/i18n.py
index e13a880..776628f 100644
--- a/neutronclient/i18n.py
+++ b/neutronclient/i18n.py
@@ -10,19 +10,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import oslo_i18n as i18n
+# TODO(amotoki): Remove this file at the beginning of Nxx cycle.
 
-_translators = i18n.TranslatorFactory(domain='neutronclient')
+from debtcollector import moves
 
-# The primary translation function using the well-known name "_"
-_ = _translators.primary
+from neutronclient import _i18n
 
-# Translators for log levels.
-#
-# The abbreviated names are meant to reflect the usual use of a short
-# name like '_'. The "L" is for "log" and the other letter comes from
-# the level.
-_LI = _translators.log_info
-_LW = _translators.log_warning
-_LE = _translators.log_error
-_LC = _translators.log_critical
+message = ("moved to neutronclient._i18n; please migrate to local "
+           "oslo_i18n usage, as defined at "
+           "http://docs.openstack.org/developer/oslo.i18n/usage.html")
+
+_ = moves.moved_function(_i18n._, '_', __name__, message=message)
+_LC = moves.moved_function(_i18n._LC, '_LC', __name__, message=message)
+_LE = moves.moved_function(_i18n._LE, '_LE', __name__, message=message)
+_LW = moves.moved_function(_i18n._LW, '_LW', __name__, message=message)
+_LI = moves.moved_function(_i18n._LI, '_LI', __name__, message=message)
diff --git a/neutronclient/neutron/v2_0/__init__.py b/neutronclient/neutron/v2_0/__init__.py
index b34be99..d5be4a1 100644
--- a/neutronclient/neutron/v2_0/__init__.py
+++ b/neutronclient/neutron/v2_0/__init__.py
@@ -27,10 +27,10 @@ from cliff import show
 from oslo_serialization import jsonutils
 import six
 
+from neutronclient._i18n import _
 from neutronclient.common import command
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 
 HEX_ELEM = '[0-9A-Fa-f]'
 UUID_PATTERN = '-'.join([HEX_ELEM + '{8}', HEX_ELEM + '{4}',
diff --git a/neutronclient/neutron/v2_0/address_scope.py b/neutronclient/neutron/v2_0/address_scope.py
index c851728..a79590b 100755
--- a/neutronclient/neutron/v2_0/address_scope.py
+++ b/neutronclient/neutron/v2_0/address_scope.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/agent.py b/neutronclient/neutron/v2_0/agent.py
index 110afc6..36167ff 100644
--- a/neutronclient/neutron/v2_0/agent.py
+++ b/neutronclient/neutron/v2_0/agent.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/agentscheduler.py b/neutronclient/neutron/v2_0/agentscheduler.py
index 59a01fb..3348e64 100644
--- a/neutronclient/neutron/v2_0/agentscheduler.py
+++ b/neutronclient/neutron/v2_0/agentscheduler.py
@@ -16,7 +16,7 @@
 
 from __future__ import print_function
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 from neutronclient.neutron.v2_0 import network
 from neutronclient.neutron.v2_0 import router
diff --git a/neutronclient/neutron/v2_0/contrib/_fox_sockets.py b/neutronclient/neutron/v2_0/contrib/_fox_sockets.py
index c2e9b19..1ff5ffd 100644
--- a/neutronclient/neutron/v2_0/contrib/_fox_sockets.py
+++ b/neutronclient/neutron/v2_0/contrib/_fox_sockets.py
@@ -14,8 +14,8 @@
 #    under the License.
 #
 
+from neutronclient._i18n import _
 from neutronclient.common import extension
-from neutronclient.i18n import _
 
 
 def _add_updatable_args(parser):
diff --git a/neutronclient/neutron/v2_0/flavor/flavor.py b/neutronclient/neutron/v2_0/flavor/flavor.py
index c53db3e..30e3ae4 100644
--- a/neutronclient/neutron/v2_0/flavor/flavor.py
+++ b/neutronclient/neutron/v2_0/flavor/flavor.py
@@ -17,8 +17,8 @@ from __future__ import print_function
 
 import argparse
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/flavor/flavor_profile.py b/neutronclient/neutron/v2_0/flavor/flavor_profile.py
index 7929787..894a8a6 100644
--- a/neutronclient/neutron/v2_0/flavor/flavor_profile.py
+++ b/neutronclient/neutron/v2_0/flavor/flavor_profile.py
@@ -15,8 +15,8 @@
 
 import argparse
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/floatingip.py b/neutronclient/neutron/v2_0/floatingip.py
index 2d95355..44b402a 100644
--- a/neutronclient/neutron/v2_0/floatingip.py
+++ b/neutronclient/neutron/v2_0/floatingip.py
@@ -18,7 +18,7 @@ from __future__ import print_function
 
 import argparse
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/fw/firewall.py b/neutronclient/neutron/v2_0/fw/firewall.py
index a4dd2ee..dacca9f 100644
--- a/neutronclient/neutron/v2_0/fw/firewall.py
+++ b/neutronclient/neutron/v2_0/fw/firewall.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/fw/firewallpolicy.py b/neutronclient/neutron/v2_0/fw/firewallpolicy.py
index c0720ea..0778687 100644
--- a/neutronclient/neutron/v2_0/fw/firewallpolicy.py
+++ b/neutronclient/neutron/v2_0/fw/firewallpolicy.py
@@ -18,7 +18,7 @@ from __future__ import print_function
 
 import argparse
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/fw/firewallrule.py b/neutronclient/neutron/v2_0/fw/firewallrule.py
index 1f05363..0f02c09 100644
--- a/neutronclient/neutron/v2_0/fw/firewallrule.py
+++ b/neutronclient/neutron/v2_0/fw/firewallrule.py
@@ -16,8 +16,8 @@
 
 import argparse
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/healthmonitor.py b/neutronclient/neutron/v2_0/lb/healthmonitor.py
index 8b1a1a1..ee5d70b 100644
--- a/neutronclient/neutron/v2_0/lb/healthmonitor.py
+++ b/neutronclient/neutron/v2_0/lb/healthmonitor.py
@@ -16,7 +16,7 @@
 
 from __future__ import print_function
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/member.py b/neutronclient/neutron/v2_0/lb/member.py
index 2a5d4b1..d81bd69 100644
--- a/neutronclient/neutron/v2_0/lb/member.py
+++ b/neutronclient/neutron/v2_0/lb/member.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/pool.py b/neutronclient/neutron/v2_0/lb/pool.py
index b0674fc..aff529e 100644
--- a/neutronclient/neutron/v2_0/lb/pool.py
+++ b/neutronclient/neutron/v2_0/lb/pool.py
@@ -17,7 +17,7 @@
 
 import six
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/v2/healthmonitor.py b/neutronclient/neutron/v2_0/lb/v2/healthmonitor.py
index 4b621cd..14f9b9a 100644
--- a/neutronclient/neutron/v2_0/lb/v2/healthmonitor.py
+++ b/neutronclient/neutron/v2_0/lb/v2/healthmonitor.py
@@ -15,7 +15,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/v2/listener.py b/neutronclient/neutron/v2_0/lb/v2/listener.py
index 92750ac..4a41719 100644
--- a/neutronclient/neutron/v2_0/lb/v2/listener.py
+++ b/neutronclient/neutron/v2_0/lb/v2/listener.py
@@ -15,8 +15,8 @@
 #    under the License.
 #
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/v2/loadbalancer.py b/neutronclient/neutron/v2_0/lb/v2/loadbalancer.py
index dc5be00..15688c2 100644
--- a/neutronclient/neutron/v2_0/lb/v2/loadbalancer.py
+++ b/neutronclient/neutron/v2_0/lb/v2/loadbalancer.py
@@ -15,7 +15,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/v2/member.py b/neutronclient/neutron/v2_0/lb/v2/member.py
index 24fd271..c1fb670 100644
--- a/neutronclient/neutron/v2_0/lb/v2/member.py
+++ b/neutronclient/neutron/v2_0/lb/v2/member.py
@@ -16,7 +16,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/v2/pool.py b/neutronclient/neutron/v2_0/lb/v2/pool.py
index ca2b82b..3c1ea99 100644
--- a/neutronclient/neutron/v2_0/lb/v2/pool.py
+++ b/neutronclient/neutron/v2_0/lb/v2/pool.py
@@ -16,8 +16,8 @@
 #    under the License.
 #
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/lb/vip.py b/neutronclient/neutron/v2_0/lb/vip.py
index 4e5d0c8..4f51357 100644
--- a/neutronclient/neutron/v2_0/lb/vip.py
+++ b/neutronclient/neutron/v2_0/lb/vip.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/metering.py b/neutronclient/neutron/v2_0/metering.py
index aa79ce1..a6ecef8 100644
--- a/neutronclient/neutron/v2_0/metering.py
+++ b/neutronclient/neutron/v2_0/metering.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/network.py b/neutronclient/neutron/v2_0/network.py
index 04aa9a7..8d34270 100644
--- a/neutronclient/neutron/v2_0/network.py
+++ b/neutronclient/neutron/v2_0/network.py
@@ -16,9 +16,9 @@
 
 import argparse
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 from neutronclient.neutron.v2_0 import availability_zone
 from neutronclient.neutron.v2_0.qos import policy as qos_policy
diff --git a/neutronclient/neutron/v2_0/nsx/networkgateway.py b/neutronclient/neutron/v2_0/nsx/networkgateway.py
index 515b87d..46d83e9 100644
--- a/neutronclient/neutron/v2_0/nsx/networkgateway.py
+++ b/neutronclient/neutron/v2_0/nsx/networkgateway.py
@@ -16,8 +16,8 @@
 
 from __future__ import print_function
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 GW_RESOURCE = 'network_gateway'
diff --git a/neutronclient/neutron/v2_0/nsx/qos_queue.py b/neutronclient/neutron/v2_0/nsx/qos_queue.py
index 7f6cb68..8ea5f13 100644
--- a/neutronclient/neutron/v2_0/nsx/qos_queue.py
+++ b/neutronclient/neutron/v2_0/nsx/qos_queue.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/port.py b/neutronclient/neutron/v2_0/port.py
index 49a2610..c611d26 100644
--- a/neutronclient/neutron/v2_0/port.py
+++ b/neutronclient/neutron/v2_0/port.py
@@ -18,9 +18,9 @@ import argparse
 
 from oslo_serialization import jsonutils
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 from neutronclient.neutron.v2_0.qos import policy as qos_policy
 
diff --git a/neutronclient/neutron/v2_0/qos/bandwidth_limit_rule.py b/neutronclient/neutron/v2_0/qos/bandwidth_limit_rule.py
index b0e1569..9db102f 100644
--- a/neutronclient/neutron/v2_0/qos/bandwidth_limit_rule.py
+++ b/neutronclient/neutron/v2_0/qos/bandwidth_limit_rule.py
@@ -15,8 +15,8 @@
 #
 
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 from neutronclient.neutron.v2_0.qos import rule as qos_rule
 
diff --git a/neutronclient/neutron/v2_0/qos/policy.py b/neutronclient/neutron/v2_0/qos/policy.py
index 8d60356..047888a 100755
--- a/neutronclient/neutron/v2_0/qos/policy.py
+++ b/neutronclient/neutron/v2_0/qos/policy.py
@@ -16,7 +16,7 @@
 
 import os
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/qos/rule.py b/neutronclient/neutron/v2_0/qos/rule.py
index 3b6510d..e4c8d92 100644
--- a/neutronclient/neutron/v2_0/qos/rule.py
+++ b/neutronclient/neutron/v2_0/qos/rule.py
@@ -15,7 +15,7 @@
 #
 
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 from neutronclient.neutron.v2_0.qos import policy as qos_policy
 
diff --git a/neutronclient/neutron/v2_0/quota.py b/neutronclient/neutron/v2_0/quota.py
index 7346f54..4b6e86e 100644
--- a/neutronclient/neutron/v2_0/quota.py
+++ b/neutronclient/neutron/v2_0/quota.py
@@ -23,9 +23,9 @@ from cliff import show
 from oslo_serialization import jsonutils
 import six
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/rbac.py b/neutronclient/neutron/v2_0/rbac.py
index 79c991d..d840af5 100644
--- a/neutronclient/neutron/v2_0/rbac.py
+++ b/neutronclient/neutron/v2_0/rbac.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/router.py b/neutronclient/neutron/v2_0/router.py
index bcb4ae3..955c7b8 100644
--- a/neutronclient/neutron/v2_0/router.py
+++ b/neutronclient/neutron/v2_0/router.py
@@ -20,9 +20,9 @@ import argparse
 
 from oslo_serialization import jsonutils
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 from neutronclient.neutron.v2_0 import availability_zone
 
diff --git a/neutronclient/neutron/v2_0/securitygroup.py b/neutronclient/neutron/v2_0/securitygroup.py
index 4891a15..22ff9fc 100644
--- a/neutronclient/neutron/v2_0/securitygroup.py
+++ b/neutronclient/neutron/v2_0/securitygroup.py
@@ -16,8 +16,8 @@
 
 import argparse
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/subnet.py b/neutronclient/neutron/v2_0/subnet.py
index 07da46b..d8b5946 100644
--- a/neutronclient/neutron/v2_0/subnet.py
+++ b/neutronclient/neutron/v2_0/subnet.py
@@ -18,9 +18,9 @@ import argparse
 
 from oslo_serialization import jsonutils
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/subnetpool.py b/neutronclient/neutron/v2_0/subnetpool.py
index 2357750..8677cd5 100644
--- a/neutronclient/neutron/v2_0/subnetpool.py
+++ b/neutronclient/neutron/v2_0/subnetpool.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronV20
 
 
diff --git a/neutronclient/neutron/v2_0/vpn/endpoint_group.py b/neutronclient/neutron/v2_0/vpn/endpoint_group.py
index e28e167..a112b31 100644
--- a/neutronclient/neutron/v2_0/vpn/endpoint_group.py
+++ b/neutronclient/neutron/v2_0/vpn/endpoint_group.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/neutron/v2_0/vpn/ikepolicy.py b/neutronclient/neutron/v2_0/vpn/ikepolicy.py
index dcfad48..e771aad 100644
--- a/neutronclient/neutron/v2_0/vpn/ikepolicy.py
+++ b/neutronclient/neutron/v2_0/vpn/ikepolicy.py
@@ -14,8 +14,8 @@
 #    under the License.
 #
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 from neutronclient.neutron.v2_0.vpn import utils as vpn_utils
 
diff --git a/neutronclient/neutron/v2_0/vpn/ipsec_site_connection.py b/neutronclient/neutron/v2_0/vpn/ipsec_site_connection.py
index 8dfa4f3..8726c28 100644
--- a/neutronclient/neutron/v2_0/vpn/ipsec_site_connection.py
+++ b/neutronclient/neutron/v2_0/vpn/ipsec_site_connection.py
@@ -16,9 +16,9 @@
 
 from oslo_serialization import jsonutils
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 from neutronclient.neutron.v2_0.vpn import utils as vpn_utils
 
diff --git a/neutronclient/neutron/v2_0/vpn/ipsecpolicy.py b/neutronclient/neutron/v2_0/vpn/ipsecpolicy.py
index 138c941..80a334d 100644
--- a/neutronclient/neutron/v2_0/vpn/ipsecpolicy.py
+++ b/neutronclient/neutron/v2_0/vpn/ipsecpolicy.py
@@ -14,8 +14,8 @@
 #    under the License.
 #
 
+from neutronclient._i18n import _
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 from neutronclient.neutron.v2_0.vpn import utils as vpn_utils
 
diff --git a/neutronclient/neutron/v2_0/vpn/utils.py b/neutronclient/neutron/v2_0/vpn/utils.py
index ab67607..65d9c7c 100644
--- a/neutronclient/neutron/v2_0/vpn/utils.py
+++ b/neutronclient/neutron/v2_0/vpn/utils.py
@@ -18,8 +18,8 @@
 """VPN Utilities and helper functions."""
 
 
+from neutronclient._i18n import _
 from neutronclient.common import exceptions
-from neutronclient.i18n import _
 
 dpd_supported_actions = ['hold', 'clear', 'restart',
                          'restart-by-peer', 'disabled']
diff --git a/neutronclient/neutron/v2_0/vpn/vpnservice.py b/neutronclient/neutron/v2_0/vpn/vpnservice.py
index c18f4e7..8bd2198 100644
--- a/neutronclient/neutron/v2_0/vpn/vpnservice.py
+++ b/neutronclient/neutron/v2_0/vpn/vpnservice.py
@@ -14,7 +14,7 @@
 #    under the License.
 #
 
-from neutronclient.i18n import _
+from neutronclient._i18n import _
 from neutronclient.neutron import v2_0 as neutronv20
 
 
diff --git a/neutronclient/shell.py b/neutronclient/shell.py
index b4ddfbf..8c92c4b 100644
--- a/neutronclient/shell.py
+++ b/neutronclient/shell.py
@@ -34,12 +34,12 @@ from oslo_utils import encodeutils
 from cliff import app
 from cliff import commandmanager
 
+from neutronclient._i18n import _
 from neutronclient.common import clientmanager
 from neutronclient.common import command as openstack_command
 from neutronclient.common import exceptions as exc
 from neutronclient.common import extension as client_extension
 from neutronclient.common import utils
-from neutronclient.i18n import _
 from neutronclient.neutron.v2_0 import address_scope
 from neutronclient.neutron.v2_0 import agent
 from neutronclient.neutron.v2_0 import agentscheduler
diff --git a/neutronclient/v2_0/client.py b/neutronclient/v2_0/client.py
index 324fd12..d69bcca 100644
--- a/neutronclient/v2_0/client.py
+++ b/neutronclient/v2_0/client.py
@@ -23,12 +23,12 @@ import time
 import requests
 import six.moves.urllib.parse as urlparse
 
+from neutronclient._i18n import _
 from neutronclient import client
 from neutronclient.common import exceptions
 from neutronclient.common import extension as client_extension
 from neutronclient.common import serializer
 from neutronclient.common import utils
-from neutronclient.i18n import _
 
 
 _logger = logging.getLogger(__name__)
diff --git a/requirements.txt b/requirements.txt
index e46d192..be8fb03 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@
 pbr>=1.6
 argparse
 cliff>=1.15.0 # Apache-2.0
+debtcollector>=0.3.0  # Apache-2.0
 iso8601>=0.1.9
 netaddr!=0.7.16,>=0.7.12
 oslo.i18n>=1.5.0 # Apache-2.0