change in fpmsyncd to skip the lookup for the Master device name if t…

…he route object table value is zero (#1048)

* change in fpmsyncd to  skip the lookup for the Master device name
if the route object table value is zero
.i.e. the route needs to put in the global routing table

fpmsyncd/routesync.cpp

@@ -45,16 +45,25 @@ void RouteSync::onMsg(int nlmsg_type, struct nl_object *obj)
     unsigned int master_index = rtnl_route_get_table(route_obj);
     char master_name[IFNAMSIZ] = {0};
 
-    /* Get the name of the master device */
-    getIfName(master_index, master_name, IFNAMSIZ);
-
-    /* If the master device name starts with VNET_PREFIX, it is a VNET route.
-       The VNET name is exactly the name of the associated master device. */
-    if (string(master_name).find(VNET_PREFIX) == 0)
+    /* if the table_id is not set in the route obj then route is for default vrf. */
+    if (master_index)
     {
-        onVnetRouteMsg(nlmsg_type, obj, string(master_name));
+        /* Get the name of the master device */
+        getIfName(master_index, master_name, IFNAMSIZ);
+
+        /* If the master device name starts with VNET_PREFIX, it is a VNET route.
+           The VNET name is exactly the name of the associated master device. */
+        if (string(master_name).find(VNET_PREFIX) == 0)
+        {
+            onVnetRouteMsg(nlmsg_type, obj, string(master_name));
+        }
+        /* Otherwise, it is a regular route (include VRF route). */
+        else
+        {
+            onRouteMsg(nlmsg_type, obj);
+        }
+
     }
-    /* Otherwise, it is a regular route (include VRF route). */
     else
     {
         onRouteMsg(nlmsg_type, obj);