I want to calculate the number and size of packets in the trace file, and I get the same number of packets in tshark and wireshark, but the bytes are not the same, in tshark it's:
olsr frames:1171 bytes:142792
data frames:571 bytes:73088
icmp frames:196 bytes:18032
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However in wireshark the bytes of olsr, data, icmp are respectively 67848 36544 7056.
The pcap file is here: https://www.dropbox.com/s/4tgkdy3w8mfw7e5/t.pcap?dl=0