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http://members.jcom.home.ne.jp/j-klein/unix/tcpdump.html http://x68000.q-e-d.net/~68user/unix/pickup?tcpdump http://itpro.nikkeibp.co.jp/article/COLUMN/20070403/267311/ http://www.net-newbie.com/tcpip/tcp/tcpdump.html
