Re: [tcpdump-workers] [tcpdump] tcpdump displays a dot('.') for an Ack flag. (#319)

2013-06-17 Thread Michael Richardson
pjp> Yesterday while looking through a packet dump, we realised that while pjp> showing TCP hand shake, tcpdump(8) displays a dot('.') for an pjp> Acknowledgement flag. The tcpdump(8) manual explains this under the ... pjp> Why not display letter 'A' for acknowledgement flag? How

[tcpdump-workers] Latency impact while listening at eth0, lo and any on Linux

2013-06-17 Thread Sergey Gomanyuk
Hello, I use pcap library to develop a tool that measures on the fly network latency (a time between receiving a request and sending a response) for HTTP, DIAMETER and other protocols. My tool is compiled for x86_64 Linux , So I noticed significant latency growing if my tool listening traffic a