diff --git a/nimble/api/controllers/v1/instances.py b/nimble/api/controllers/v1/instances.py
index 1d4ad4ad..38e48e1c 100644
--- a/nimble/api/controllers/v1/instances.py
+++ b/nimble/api/controllers/v1/instances.py
@@ -63,8 +63,8 @@ class Instance(base.APIBase):
     image_uuid = types.uuid
     """The image UUID of the instance"""
 
-    network_uuid = types.uuid
-    """The network UUID of the instance"""
+    network_info = {wtypes.text: types.jsontype}
+    """The network information of the instance"""
 
     links = wsme.wsattr([link.Link], readonly=True)
     """A list containing a self link"""
diff --git a/nimble/api/controllers/v1/types.py b/nimble/api/controllers/v1/types.py
index 4e269d19..32616e30 100644
--- a/nimble/api/controllers/v1/types.py
+++ b/nimble/api/controllers/v1/types.py
@@ -15,11 +15,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import json
+
 from oslo_utils import strutils
 from oslo_utils import uuidutils
+import six
 from wsme import types as wtypes
 
 from nimble.common import exception
+from nimble.common.i18n import _
 
 
 class UuidType(wtypes.UserType):
@@ -62,5 +66,32 @@ class BooleanType(wtypes.UserType):
         return BooleanType.validate(value)
 
 
+class JsonType(wtypes.UserType):
+    """A simple JSON type."""
+
+    basetype = wtypes.text
+    name = 'json'
+
+    def __str__(self):
+        # These are the json serializable native types
+        return ' | '.join(map(str, (wtypes.text, six.integer_types, float,
+                                    BooleanType, list, dict, None)))
+
+    @staticmethod
+    def validate(value):
+        try:
+            json.dumps(value)
+        except TypeError:
+            raise exception.Invalid(_('%s is not JSON serializable') % value)
+        else:
+            return value
+
+    @staticmethod
+    def frombasetype(value):
+        return JsonType.validate(value)
+
+
 boolean = BooleanType()
 uuid = UuidType()
+# Can't call it 'json' because that's the name of the stdlib module
+jsontype = JsonType()
diff --git a/nimble/db/sqlalchemy/alembic/versions/91941bf1ebc9_initial_migration.py b/nimble/db/sqlalchemy/alembic/versions/91941bf1ebc9_initial_migration.py
index aabe336c..07d8631c 100644
--- a/nimble/db/sqlalchemy/alembic/versions/91941bf1ebc9_initial_migration.py
+++ b/nimble/db/sqlalchemy/alembic/versions/91941bf1ebc9_initial_migration.py
@@ -69,7 +69,7 @@ def upgrade():
         sa.Column('task_state', sa.String(length=255), nullable=True),
         sa.Column('instance_type_id', sa.Integer(), nullable=True),
         sa.Column('image_uuid', sa.String(length=36), nullable=True),
-        sa.Column('network_uuid', sa.String(length=36), nullable=True),
+        sa.Column('network_info', sa.Text(), nullable=True),
         sa.Column('launched_at', sa.DateTime(), nullable=True),
         sa.Column('terminated_at', sa.DateTime(), nullable=True),
         sa.Column('availability_zone', sa.String(length=255), nullable=True),
diff --git a/nimble/db/sqlalchemy/models.py b/nimble/db/sqlalchemy/models.py
index 0290c9df..d738c2a0 100644
--- a/nimble/db/sqlalchemy/models.py
+++ b/nimble/db/sqlalchemy/models.py
@@ -19,6 +19,7 @@ SQLAlchemy models for baremetal compute service.
 
 from oslo_db import options as db_options
 from oslo_db.sqlalchemy import models
+from oslo_db.sqlalchemy import types as db_types
 import six.moves.urllib.parse as urlparse
 from sqlalchemy import Boolean, Column
 from sqlalchemy import schema, String, Integer, Text
@@ -105,6 +106,6 @@ class Instance(Base):
     instance_type_id = Column(Integer, nullable=True)
     availability_zone = Column(String(255), nullable=True)
     image_uuid = Column(String(36), nullable=True)
-    network_uuid = Column(String(36), nullable=True)
+    network_info = Column(db_types.JsonEncodedDict)
     node_uuid = Column(String(36), nullable=True)
     extra = Column(Text, nullable=True)
diff --git a/nimble/engine/manager.py b/nimble/engine/manager.py
index 130c108e..6bd7927a 100644
--- a/nimble/engine/manager.py
+++ b/nimble/engine/manager.py
@@ -58,7 +58,7 @@ class EngineManager(base_manager.BaseEngineManager):
 
     def _build_networks(self, context, instance):
         macs = ironic.get_macs_from_node(instance.node_uuid)
-        port = neutron.create_ports(context, instance.network_uuid, macs[0])
+        port = neutron.create_ports(context, instance.network_info, macs[0])
         ironic.plug_vifs(instance.node_uuid, port['port']['id'])
 
     def _wait_for_active(self, instance):
diff --git a/nimble/objects/instance.py b/nimble/objects/instance.py
index 6b61f01e..2ca1ac48 100644
--- a/nimble/objects/instance.py
+++ b/nimble/objects/instance.py
@@ -39,7 +39,7 @@ class Instance(base.NimbleObject, object_base.VersionedObjectDictCompat):
         'instance_type_id': object_fields.IntegerField(nullable=True),
         'availability_zone': object_fields.StringField(nullable=True),
         'image_uuid': object_fields.UUIDField(nullable=True),
-        'network_uuid': object_fields.UUIDField(nullable=True),
+        'network_info': object_fields.FlexibleDictField(nullable=True),
         'node_uuid': object_fields.UUIDField(nullable=True),
         'extra': object_fields.FlexibleDictField(nullable=True),
     }