diff --git a/nexus/Android.mk b/nexus/Android.mk
index df170b8..61240d5 100644
--- a/nexus/Android.mk
+++ b/nexus/Android.mk
@@ -22,6 +22,7 @@
                   WifiScanner.cpp          \
                   WifiNetwork.cpp          \
                   OpenVpnController.cpp    \
+                  InterfaceConfig.cpp      \
 
 LOCAL_MODULE:= nexus
 
diff --git a/nexus/CommandListener.cpp b/nexus/CommandListener.cpp
index 5b03357..e2edc77 100644
--- a/nexus/CommandListener.cpp
+++ b/nexus/CommandListener.cpp
@@ -202,3 +202,11 @@
     cli->sendMsg(ErrorCode::CommandParameterError, "Failed to set property.", true);
     return 0;
 }
+
+CommandListener::ListCmd::ListCmd() :
+                 NexusCommand("list") {
+}
+
+int CommandListener::ListCmd::runCommand(SocketClient *cli, char *data) {
+    return 0;
+}
diff --git a/nexus/CommandListener.h b/nexus/CommandListener.h
index 6973aaa..b44d3ec 100644
--- a/nexus/CommandListener.h
+++ b/nexus/CommandListener.h
@@ -74,6 +74,13 @@
         virtual ~GetCmd() {}
         int runCommand(SocketClient *c, char *data);
     };
+
+    class ListCmd : public NexusCommand {
+    public:
+        ListCmd();
+        virtual ~ListCmd() {}
+        int runCommand(SocketClient *c, char *data);
+    };
 };
 
 #endif
diff --git a/nexus/InterfaceConfig.cpp b/nexus/InterfaceConfig.cpp
new file mode 100644
index 0000000..89936f8
--- /dev/null
+++ b/nexus/InterfaceConfig.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include <string.h>
+
+#define LOG_TAG "InterfaceConfig"
+#include <cutils/log.h>
+
+#include "InterfaceConfig.h"
+
+InterfaceConfig::InterfaceConfig(const char *name) {
+    mName = strdup(name);
+    mUseDhcp = true;
+}
+
+InterfaceConfig::~InterfaceConfig() {
+    free(mName);
+}
+
+InterfaceConfig::InterfaceConfig(const char *name, const char *ip, const char *nm,
+                    const char *gw, const char *dns1, const char *dns2,
+                    const char *dns3) {
+    mName = strdup(name);
+    mUseDhcp = false;
+
+    if (!inet_aton(ip, &mIp))
+        LOGW("Unable to parse ip (%s)", ip);
+    if (!inet_aton(nm, &mIp))
+        LOGW("Unable to parse netmask (%s)", nm);
+    if (!inet_aton(gw, &mIp))
+        LOGW("Unable to parse gateway (%s)", gw);
+    if (!inet_aton(dns1, &mIp))
+        LOGW("Unable to parse dns1 (%s)", dns1);
+    if (!inet_aton(dns2, &mIp))
+        LOGW("Unable to parse dns2 (%s)", dns2);
+    if (!inet_aton(dns3, &mIp))
+        LOGW("Unable to parse dns3 (%s)", dns3);
+}
+
+InterfaceConfig::InterfaceConfig(const char *name, const struct in_addr *ip,
+                    const struct in_addr *nm, const struct in_addr *gw,
+                    const struct in_addr *dns1, const struct in_addr *dns2,
+                    const struct in_addr *dns3) {
+    mName = strdup(name);
+    mUseDhcp = false;
+
+    memcpy(&mIp, ip, sizeof(struct in_addr));
+    memcpy(&mNetmask, nm, sizeof(struct in_addr));
+    memcpy(&mGateway, gw, sizeof(struct in_addr));
+    memcpy(&mDns1, dns1, sizeof(struct in_addr));
+    memcpy(&mDns2, dns2, sizeof(struct in_addr));
+    memcpy(&mDns3, dns3, sizeof(struct in_addr));
+}
+
diff --git a/nexus/InterfaceConfig.h b/nexus/InterfaceConfig.h
new file mode 100644
index 0000000..1426e99
--- /dev/null
+++ b/nexus/InterfaceConfig.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef _INTERFACE_CONFIG_H
+#define _INTERFACE_CONFIG_H
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+class InterfaceConfig {
+private:
+    char *mName;
+    bool mUseDhcp;
+    struct in_addr mIp;
+    struct in_addr mNetmask;
+    struct in_addr mGateway;
+    struct in_addr mDns1;
+    struct in_addr mDns2;
+    struct in_addr mDns3;
+
+public:
+    InterfaceConfig(const char *name);
+    InterfaceConfig(const char *name, const char *ip, const char *nm,
+                    const char *gw, const char *dns1, const char *dns2,
+                    const char *dns3);
+
+    InterfaceConfig(const char *name, const struct in_addr *ip,
+                    const struct in_addr *nm, const struct in_addr *gw,
+                    const struct in_addr *dns1, const struct in_addr *dns2,
+                    const struct in_addr *dns3);
+
+    virtual ~InterfaceConfig();
+
+    const char     *getName() const { return mName; }
+    bool            getUseDhcp() const { return mUseDhcp; }
+    const struct in_addr &getIp() const { return mIp; }
+    const struct in_addr &getNetmask() const { return mNetmask; }
+    const struct in_addr &getGateway() const { return mGateway; }
+    const struct in_addr &getDns1() const { return mDns1; }
+    const struct in_addr &getDns2() const { return mDns2; }
+    const struct in_addr &getDns3() const { return mDns3; }
+};
+
+
+#endif
diff --git a/nexus/NetworkManager.cpp b/nexus/NetworkManager.cpp
index 022d7f8..49b0210 100644
--- a/nexus/NetworkManager.cpp
+++ b/nexus/NetworkManager.cpp
@@ -21,6 +21,7 @@
 #include <cutils/log.h>
 
 #include "NetworkManager.h"
+#include "InterfaceConfig.h"
 
 NetworkManager *NetworkManager::sInstance = NULL;
 
@@ -150,12 +151,23 @@
     return *mProperties;
 }
 
-int NetworkManager::onInterfaceCreated(Controller *c, char *name) {
-    LOGD("Interface %s created by controller %s", name, c->getName());
+int NetworkManager::onInterfaceStart(Controller *c, const InterfaceConfig *cfg) {
+    LOGD("Interface %s started by controller %s", cfg->getName(), c->getName());
+
+    // Look up the interface
+
+    if (0) { // already started?
+        errno = EADDRINUSE;
+        return -1;
+    }
+
+    if (cfg->getUseDhcp()) {
+    } else {
+    }
     return 0;
 }
 
-int NetworkManager::onInterfaceDestroyed(Controller *c, char *name) {
-    LOGD("Interface %s destroyed by controller %s", name, c->getName());
+int NetworkManager::onInterfaceStop(Controller *c, const char *name) {
+    LOGD("Interface %s stopped by controller %s", name, c->getName());
     return 0;
 }
diff --git a/nexus/NetworkManager.h b/nexus/NetworkManager.h
index bd00849..e8564ca 100644
--- a/nexus/NetworkManager.h
+++ b/nexus/NetworkManager.h
@@ -21,6 +21,8 @@
 #include "Controller.h"
 #include "PropertyCollection.h"
 
+class InterfaceConfig;
+
 class NetworkManager {
 private:
     static NetworkManager *sInstance;
@@ -57,9 +59,15 @@
     NetworkManager();
 
 public:
-// XXX: Extract these into an interface
-    int onInterfaceCreated(Controller *c, char *name);
-    int onInterfaceDestroyed(Controller *c, char *name);
+    /*
+     * Called from a controller when an interface is available/ready for use.
+     * 'cfg' contains information on how this interface should be configured.
+     */
+    int onInterfaceStart(Controller *c, const InterfaceConfig *cfg);
 
+    /*
+     * Called from a controller when an interface should be shut down
+     */
+    int onInterfaceStop(Controller *c, const char *name);
 };
 #endif