Delay-tolerent networking refers to techniques for networking systems where delays and intermittency are orders of magnitutes larger than on the internet, such as in e.g. deep space communications. In the Internet Engineering Task Force, there exists a DTN working group that standardizes the Bundle Protocol, which is an implementation of the DTN architecture. In doing so, it co-operates with the Consultative Committee for Space Data Systems (CCSDS), which is a multi-national forum for the dev...