alakhian@spider:% tcptrace --warn_printbadcsum --checksum input/bad_tcp_checksum.dmp.gz packet 1: bad TCP checksum 1 arg remaining, starting with 'input/bad_tcp_checksum.dmp.gz' Ostermann's tcptrace -- version 6.2.6 -- Thu Nov 14, 2002 10 packets seen, 9 TCP packets traced elapsed wallclock time: 0:00:00.057058, 175 pkts/sec analyzed trace file elapsed time: 0:00:00.012379 bad IP checksums: 0 bad TCP checksums: 1 TCP connection info: 1: analex093.lerc.nasa.gov:2270 - chipper.lerc.nasa.gov:139 (a2b) 3> 6<