Hi Alex, Does any document explain the Interest Nack packet format in the current ndnsim? How do I get the error code (duplicate, congestion..) in an Interest Nack? Thanks a lot~ Regards, huyao -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.lists.cs.ucla.edu/pipermail/ndnsim/attachments/20130605/f746509a/attachment.html>