dbg._pdebug('creating ust_app client thread')
t = threading.Thread(target=_client_thread_target,
args=('ust_app', ust_app_port, reg_queue))
dbg._pdebug('creating ust_app client thread')
t = threading.Thread(target=_client_thread_target,
args=('ust_app', ust_app_port, reg_queue))