Wireshark · Wireshark-dev: [Wireshark-dev] Question about two File: libpcap(tcpdump, Ethereal, etc.) , Redhat Linux 6.1 libpcap

["Mosly Chang" <moslychang@xxxxxxxxx>]

Hi~all~
I have a question, I try to inspect wireshark generated files in hex.

I compare two kinds of  them.
One's File type is "libpcap(tcpdump, Ethereal,etc.)" 
the other is "Redhat Linux 6.1
 libpcap(tcpdump)"

Their magic numbers are the same 0xd4c3b2a1,
so  when I parse the two files, I can not determine which is libpcap or Redhat Linux6.1 libpcap.
I know libpcap's packet header are 16 bytes, Redhat Linux 
6.1 libpcap  are 24 bytes, but beside this information,
there is no other information for me to determine which file is what it is.

Does anyone help me or give some link, information???? 
Thank You!! 





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