A new feature is supported now by the IPC library - one can force using the same IPC domain by all applications belonging to a specific TDAQ release. This can be done by creating a special file (called ipc_reference_location) in the $TDAQ_INST_PATH/com/ folder and putting the name of the initial IPC reference file to this special file. If the $TDAQ_INST_PATH/com/ipc_reference_location file exists and is not empty then IPC library will ignore the TDAQ_IPC_INIT_REF environment variable and thus will assure that all the applications started from the current TDAQ release will be using the same IPC domain (i.e. the same default IPC server).