Hi friends, After successfully compiling pdns tools such as dnsscope, dnsreplay and dnswasher I stumbled upon running one of them. I generated tcpdump file with tcpdump command: #tcpdump > dumpfile #/usr/local/bin/dnsscope ./dumpfile Fatal: PCAP file ./dumpfile has bad magic 333a3031, should be a1b2c3d4 What is this magic and why is it wrong? Eugene