/* Enable/disable stream. */
void pg_stream_enable_disable (pg_main_t * pg, pg_stream_t * s,
int is_enable);
/* Find/create free packet-generator interface index. */
/* Enable/disable stream. */
void pg_stream_enable_disable (pg_main_t * pg, pg_stream_t * s,
int is_enable);
/* Find/create free packet-generator interface index. */