diff --git a/nova/db/sqlalchemy/migrate_repo/versions/066_preload_instance_info_cache_table.py b/nova/db/sqlalchemy/migrate_repo/versions/066_preload_instance_info_cache_table.py
index 67a618e0cdfa..a9a9db96e77b 100644
--- a/nova/db/sqlalchemy/migrate_repo/versions/066_preload_instance_info_cache_table.py
+++ b/nova/db/sqlalchemy/migrate_repo/versions/066_preload_instance_info_cache_table.py
@@ -139,6 +139,57 @@ def upgrade(migrate_engine):
 
         return subnet
 
+    def _update_network(vif, network):
+        # vifs have a network which has subnets, so create the subnets
+        # subnets contain all of the ip information
+        network['subnets'] = []
+
+        network['dns1'] = _ip_dict_from_string(network['dns1'], 'dns')
+        network['dns2'] = _ip_dict_from_string(network['dns2'], 'dns')
+
+        # nova networks can only have 2 subnets
+        if network['cidr']:
+            network['subnets'].append(_create_subnet(4, network, vif))
+        if network['cidr_v6']:
+            network['subnets'].append(_create_subnet(6, network, vif))
+
+        # put network together to fit model
+        network['id'] = network.pop('uuid')
+        network['meta'] = {}
+
+        # NOTE(tr3buchet) this isn't absolutely necessary as hydration
+        # would still work with these as keys, but cache generated by
+        # the model would show these keys as a part of meta. i went
+        # ahead and set it up the same way just so it looks the same
+        if network['project_id']:
+            network['meta']['project_id'] = network['project_id']
+        del network['project_id']
+        if network['injected']:
+            network['meta']['injected'] = network['injected']
+        del network['injected']
+        if network['multi_host']:
+            network['meta']['multi_host'] = network['multi_host']
+        del network['multi_host']
+        if network['bridge_interface']:
+            network['meta']['bridge_interface'] = \
+                                              network['bridge_interface']
+        del network['bridge_interface']
+        if network['vlan']:
+            network['meta']['vlan'] = network['vlan']
+        del network['vlan']
+
+        # ip information now lives in the subnet, pull them out of network
+        del network['dns1']
+        del network['dns2']
+        del network['cidr']
+        del network['cidr_v6']
+        del network['gateway']
+        del network['gateway_v6']
+
+        # don't need meta if it's empty
+        if not network['meta']:
+            del network['meta']
+
     # preload caches table
     # list is made up of a row(instance_id, nw_info_json) for each instance
     for instance in get_instances():
@@ -152,59 +203,14 @@ def upgrade(migrate_engine):
         logging.info("VIFs for Instance %s: \n %s" % \
                         (instance['uuid'], nw_info))
         for vif in nw_info:
-            network = get_network_by_id(vif['network_id'])[0]
-            logging.info("Network for Instance %s: \n %s" % \
+            networks_ = get_network_by_id(vif['network_id'])
+            if networks_:
+                network = networks_[0]
+                logging.info("Network for Instance %s: \n %s" % \
                         (instance['uuid'], network))
-
-            # vifs have a network which has subnets, so create the subnets
-            # subnets contain all of the ip information
-            network['subnets'] = []
-
-            network['dns1'] = _ip_dict_from_string(network['dns1'], 'dns')
-            network['dns2'] = _ip_dict_from_string(network['dns2'], 'dns')
-
-            # nova networks can only have 2 subnets
-            if network['cidr']:
-                network['subnets'].append(_create_subnet(4, network, vif))
-            if network['cidr_v6']:
-                network['subnets'].append(_create_subnet(6, network, vif))
-
-            # put network together to fit model
-            network['id'] = network.pop('uuid')
-            network['meta'] = {}
-
-            # NOTE(tr3buchet) this isn't absolutely necessary as hydration
-            # would still work with these as keys, but cache generated by
-            # the model would show these keys as a part of meta. i went
-            # ahead and set it up the same way just so it looks the same
-            if network['project_id']:
-                network['meta']['project_id'] = network['project_id']
-            del network['project_id']
-            if network['injected']:
-                network['meta']['injected'] = network['injected']
-            del network['injected']
-            if network['multi_host']:
-                network['meta']['multi_host'] = network['multi_host']
-            del network['multi_host']
-            if network['bridge_interface']:
-                network['meta']['bridge_interface'] = \
-                                                  network['bridge_interface']
-            del network['bridge_interface']
-            if network['vlan']:
-                network['meta']['vlan'] = network['vlan']
-            del network['vlan']
-
-            # ip information now lives in the subnet, pull them out of network
-            del network['dns1']
-            del network['dns2']
-            del network['cidr']
-            del network['cidr_v6']
-            del network['gateway']
-            del network['gateway_v6']
-
-            # don't need meta if it's empty
-            if not network['meta']:
-                del network['meta']
+                _update_network(vif, network)
+            else:
+                network = None
 
             # put vif together to fit model
             del vif['network_id']