diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceService.java b/core/api/src/main/java/org/onosproject/net/device/DeviceService.java
index f86a98a..86d9025 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceService.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceService.java
@@ -187,11 +187,11 @@
 
 
     /**
-     * Indicates how long ago the device connected or disconnected from this
-     * controller instance as a time offset.
+     * Indicates the time at which the given device connected or disconnected
+     * from this controller instance.
      *
      * @param deviceId device identifier
-     * @return time offset in miliseconds
+     * @return time offset in miliseconds from Epoch
      */
     long getLastUpdatedInstant(DeviceId deviceId);
 
diff --git a/core/api/src/main/java/org/onosproject/net/intf/InterfaceService.java b/core/api/src/main/java/org/onosproject/net/intf/InterfaceService.java
index 00adb78..b7f5ea8 100644
--- a/core/api/src/main/java/org/onosproject/net/intf/InterfaceService.java
+++ b/core/api/src/main/java/org/onosproject/net/intf/InterfaceService.java
@@ -127,4 +127,13 @@
     default VlanId getNativeVlanId(ConnectPoint connectPoint) {
         return null;
     }
+
+    /**
+     * Returns true if given connectPoint has an IP address or vlan configured
+     * on any of its interfaces.
+     *
+     * @param connectPoint the port on a device
+     * @return true if connectpoint has a configured interface
+     */
+    boolean isConfigured(ConnectPoint connectPoint);
 }