diff --git a/neutron_lib/api/definitions/__init__.py b/neutron_lib/api/definitions/__init__.py
index 79ab18afe..dfa72429b 100644
--- a/neutron_lib/api/definitions/__init__.py
+++ b/neutron_lib/api/definitions/__init__.py
@@ -28,6 +28,7 @@ from neutron_lib.api.definitions import fip64
 from neutron_lib.api.definitions import firewall
 from neutron_lib.api.definitions import firewall_v2
 from neutron_lib.api.definitions import firewallrouterinsertion
+from neutron_lib.api.definitions import ip_allocation
 from neutron_lib.api.definitions import l2_adjacency
 from neutron_lib.api.definitions import l3
 from neutron_lib.api.definitions import logging
@@ -72,6 +73,7 @@ _ALL_API_DEFINITIONS = {
     firewall,
     firewall_v2,
     firewallrouterinsertion,
+    ip_allocation,
     l2_adjacency,
     l3,
     logging,
diff --git a/neutron_lib/api/definitions/ip_allocation.py b/neutron_lib/api/definitions/ip_allocation.py
new file mode 100644
index 000000000..6101d1f2b
--- /dev/null
+++ b/neutron_lib/api/definitions/ip_allocation.py
@@ -0,0 +1,45 @@
+# Copyright (c) 2016 Hewlett Packard Enterprise Development Company, L.P.
+#
+#    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.
+
+from neutron_lib.api.definitions import port
+
+
+IP_ALLOCATION = 'ip_allocation'
+IP_ALLOCATION_IMMEDIATE = 'immediate'
+IP_ALLOCATION_DEFERRED = 'deferred'
+IP_ALLOCATION_NONE = 'none'
+
+ALIAS = 'ip_allocation'
+IS_SHIM_EXTENSION = False
+IS_STANDARD_ATTR_EXTENSION = False
+NAME = 'IP Allocation'
+API_PREFIX = ''
+DESCRIPTION = 'IP allocation extension.'
+UPDATED_TIMESTAMP = '2016-06-10T23:00:00-00:00'
+RESOURCE_NAME = port.RESOURCE_NAME
+COLLECTION_NAME = port.COLLECTION_NAME
+RESOURCE_ATTRIBUTE_MAP = {
+    COLLECTION_NAME: {
+        IP_ALLOCATION: {
+            'allow_post': False,
+            'allow_put': False,
+            'is_visible': True
+        }
+    }
+}
+SUB_RESOURCE_ATTRIBUTE_MAP = {}
+ACTION_MAP = {}
+REQUIRED_EXTENSIONS = []
+OPTIONAL_EXTENSIONS = []
+ACTION_STATUS = {}
diff --git a/neutron_lib/tests/unit/api/definitions/ip_allocation.py b/neutron_lib/tests/unit/api/definitions/ip_allocation.py
new file mode 100644
index 000000000..e03f53ee6
--- /dev/null
+++ b/neutron_lib/tests/unit/api/definitions/ip_allocation.py
@@ -0,0 +1,20 @@
+#    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.
+
+from neutron_lib.api.definitions import ip_allocation
+from neutron_lib.tests.unit.api.definitions import base
+
+
+class IPAllocationDefinitionTestCase(base.DefinitionBaseTestCase):
+    extension_module = ip_allocation
+    extension_resources = ()
+    extension_attributes = (ip_allocation.IP_ALLOCATION,)
diff --git a/releasenotes/notes/rehome-ipalloc-apidef-dee59cfffd903b7a.yaml b/releasenotes/notes/rehome-ipalloc-apidef-dee59cfffd903b7a.yaml
new file mode 100644
index 000000000..41dcefc28
--- /dev/null
+++ b/releasenotes/notes/rehome-ipalloc-apidef-dee59cfffd903b7a.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - The ``ip_allocation`` extension's API definition is now available in
+    ``neutron_lib.api.definitions.ip_allocation``.