+/* -q, --queue: OpenFlow queue to use, or the default queue if UINT32_MAX. */
+static uint32_t queue_id = UINT32_MAX;
+
+/* --with-flows: File with flows to send to switch, or null to not load
+ * any default flows. */
+static FILE *flow_file = NULL;
+
+/* --unixctl: Name of unixctl socket, or null to use the default. */
+static char *unixctl_path = NULL;
+