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Lessons Learned System Software DTN2 robustness remains an issue our experiments stressed many parts of the code broke built-in assumptions regarding data and control flow we have fixed some bugs, but others remain modifications to DTN2 code are time consuming even minor changes break DTN2 Evaluated version of DTN2 from CVS in early February using BBN platform, but without our modifications to DTN2 dtnd died in some of the runs We need a more flexible implementation architecture to support additional strategies (including from third parties) |