I have created a SDN network in the mininet and i started to push a tcp flow between 2 hosts by using iperf command . I use wireshark for some analysis. I found that when the packet is retransmitted for any reason, the checksum of the retransmitted packet is totally different from the original one that has been lost. I think they should be the same . Could any one has any interpretation for that ?
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Maybe you could share a small capture file on any easily accessible file sharing service, dropbox, pastebin, google drive, cloudshark, etc? – Christopher Maynard Feb 13 '18 at 03:46
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Which checksum is changing? The IP checksum or TCP checksum? – crchurchey Feb 20 '18 at 04:11