diff --git a/devstack/local.conf.sample b/devstack/local.conf.sample
index df7765c..fa47849 100644
--- a/devstack/local.conf.sample
+++ b/devstack/local.conf.sample
@@ -18,7 +18,7 @@ LOGFILE=/opt/stack/logs/stack.sh.log
 VERBOSE=True
 LOG_COLOR=True
 SCREEN_LOGDIR=/opt/stack/logs
-HOST_IP=172.16.10.10
+HOST_IP=127.0.0.1
 FIXED_RANGE=10.0.0.0/24
 NETWORK_GATEWAY=10.0.0.1
 FIXED_NETWORK_SIZE=256
diff --git a/tricircle/networking/plugin.py b/tricircle/networking/plugin.py
index 779e83b..51a0859 100644
--- a/tricircle/networking/plugin.py
+++ b/tricircle/networking/plugin.py
@@ -24,9 +24,7 @@ from neutron.common import rpc as n_rpc
 from neutron.common import topics
 from neutron.db import agentschedulers_db
 from neutron.db import db_base_plugin_v2
-from neutron.db import external_net_db
 from neutron.db import extradhcpopt_db
-from neutron.db import l3_db
 from neutron.db import portbindings_db
 from neutron.db import securitygroups_db
 from neutron.i18n import _LI
@@ -38,8 +36,6 @@ LOG = log.getLogger(__name__)
 
 class TricirclePlugin(db_base_plugin_v2.NeutronDbPluginV2,
                       securitygroups_db.SecurityGroupDbMixin,
-                      l3_db.L3_NAT_dbonly_mixin,
-                      external_net_db.External_net_db_mixin,
                       portbindings_db.PortBindingMixin,
                       extradhcpopt_db.ExtraDhcpOptMixin,
                       agentschedulers_db.DhcpAgentSchedulerDbMixin):
@@ -52,8 +48,7 @@ class TricirclePlugin(db_base_plugin_v2.NeutronDbPluginV2,
                                    "extra_dhcp_opt",
                                    "binding",
                                    "security-group",
-                                   "external-net",
-                                   "router"]
+                                   "external-net"]
 
     def __init__(self):
         super(TricirclePlugin, self).__init__()