diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VTNManager.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VTNManager.java
index aaefb07..252dcf0 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VTNManager.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VTNManager.java
@@ -933,6 +933,7 @@
                         .getL3vni(vmPort.tenantId());
                 // Floating ip BIND
                 if (type == VtnRscEvent.Type.FLOATINGIP_BIND) {
+                    vPortStore.put(fipPort.portId(), fipPort);
                     applyNorthSouthL3Flows(deviceId, host, vmPort, fipPort,
                                            floaingIp, l3vni, exPort,
                                            Objective.Operation.ADD);
@@ -941,6 +942,7 @@
                     applyNorthSouthL3Flows(deviceId, host, vmPort, fipPort,
                                            floaingIp, l3vni, exPort,
                                            Objective.Operation.REMOVE);
+                    vPortStore.remove(fipPort.portId());
                 }
             }
         }
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/impl/FloatingIpManager.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/impl/FloatingIpManager.java
index 3902593..e3e52e9 100644
--- a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/impl/FloatingIpManager.java
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/floatingip/impl/FloatingIpManager.java
@@ -224,11 +224,6 @@
                                                    "FloatingIP ID doesn't exist");
             }
             FloatingIp floatingIp = floatingIpStore.get(floatingIpId);
-            if (floatingIp.portId() != null) {
-                log.debug("The floating Ip is uesd by the port whose identifier is {}",
-                          floatingIp.portId().toString());
-                return false;
-            }
             floatingIpStore.remove(floatingIpId, floatingIp);
             floatingIpBindStore.remove(floatingIpId);
             if (floatingIpStore.containsKey(floatingIpId)) {
@@ -331,6 +326,11 @@
                 notifyListeners(new FloatingIpEvent(
                                                     FloatingIpEvent.Type.FLOATINGIP_DELETE,
                                                     floatingIp));
+                if (floatingIp.portId() != null) {
+                    notifyListeners(new FloatingIpEvent(
+                                                        FloatingIpEvent.Type.FLOATINGIP_UNBIND,
+                                                        floatingIp));
+                }
             }
         }
     }