diff --git a/src/main/java/org/opencord/cordvtn/impl/InstanceManager.java b/src/main/java/org/opencord/cordvtn/impl/InstanceManager.java
index 3041bbf..6269e98 100644
--- a/src/main/java/org/opencord/cordvtn/impl/InstanceManager.java
+++ b/src/main/java/org/opencord/cordvtn/impl/InstanceManager.java
@@ -69,6 +69,7 @@
 import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor;
 import static org.onlab.util.Tools.groupedThreads;
 import static org.onosproject.dhcp.IpAssignment.AssignmentStatus.Option_RangeNotEnforced;
+import static org.onosproject.net.AnnotationKeys.PORT_NAME;
 import static org.onosproject.xosclient.api.VtnServiceApi.NetworkType.MANAGEMENT;
 import static org.opencord.cordvtn.api.Constants.*;
 import static org.slf4j.LoggerFactory.getLogger;