Dear All:

Does anyone know what is the reason to cause the following error:
tcpdump: pcap_loop: bogus savefile header

I download some files from the web, some works fine with tcpdump but
for some file the above error message comes out following several valid
IP packets. I tried it in Linux Mandrake and Free BSD. Both have this problem.


Another error happens as following if I  run the following command
  /usr/sbin/tcpdump -F filter -n -r inside1fri.tcpdump.gz|perl justip.pl 
|sort -u > ipinside1fri.txt

tcpdump: pcap_loop: truncated dump file

I have been stuck by this problem for about one week, I will be appreciated 
for any help or
suggestion.

Thanks

Tao

Tao Peng
Ph.D. Student of
ARC Special Research Center of Ultra-Broadband Information Networks
Department of Electrical and Electronic Engineering, Melbourne 
University,Australia
Tel: 61 3 8344 3822 (office) 0402 947 026(mobile)
  

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