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systemtap
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examples
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network
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who_sent_it.txt
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# stap who_sent_it.stp -G the_dport=53 -c "ping -c 1 sourceware.org" PING sourceware.org (209.132.180.131) 56(84) bytes of data. 64 bytes from server1.sourceware.org (209.132.180.131): icmp_seq=1 ttl=47 time=90.9 ms [...] nscd[21841] sent packet to 192.168.1.10:53 <<<< output from systemtap # stap who_sent_it.stp -G the_daddr="192.168.1.10" swapper/0[0] sent packet to 192.168.1.10:2049 zsh[2215] sent packet to 192.168.1.10:2049 swapper/0[0] sent packet to 192.168.1.10:2049 ssh[24933] sent packet to 192.168.1.10:22 ssh[21400] sent packet to 192.168.1.10:22 swapper/0[0] sent packet to 192.168.1.10:22 <<<< not necessarily originating thread ssh[24933] sent packet to 192.168.1.10:22 ssh[24933] sent packet to 192.168.1.10:22 ssh[21400] sent packet to 192.168.1.10:22 [...]