surf_network_model = new simgrid::surf::NetworkIBModel();
all_existing_models->push_back(surf_network_model);
networkActionStateChangedCallbacks.connect(IB_action_state_changed_callback);
surf_network_model = new simgrid::surf::NetworkIBModel();
all_existing_models->push_back(surf_network_model);
networkActionStateChangedCallbacks.connect(IB_action_state_changed_callback);