A device is provided that is connected with a content centric network. The device includes a request reception unit that receives a request packet that requests data that are generated by the device. The device also includes a data transmission unit that transmits the requested data to a CCN network in a case where the data that are requested by the request packet, which is received by the request reception unit, are present in the device. The device further includes a negative acknowledgement unit that transmits a packet that indicates a negative acknowledgement, which includes information about a generation time as a time when the requested data are generated to the CCN network, in a case where the data that are requested by the request packet that is received by the request reception unit are absent in the device.