tcpdump mailing list archives

Re: why the length of tcp segments varies a lot ?


From: 江卓 <juejiang91 () gmail com>
Date: Tue, 25 Dec 2012 09:54:44 +0800

after setting gso to off,tcpdump result goes fine、
http://lists.openwall.net/netdev/2008/11/14/20

2012/12/24 江卓 <juejiang91 () gmail com>:
Hello all !
I'v just been testing the parameters of tcp. After analyzing  the packets I
caught with tcpdump in my linux(ubuntu and debian) , I found that the number
behind ack is quite strange. It increases equally spaced. And the length of
tcp segments varies a lot.For example the "seq 25:7265" is the data send
,after that I see a ack with"ack 2921",2921 is in the middle of 25 and
7265.The tracefile is attached in this email.
Can anyone explain to me why this happened and how to solve this?

Thanks.
--
Best!

江卓
Zhuo Jiang
Dept. of Computer Science, Tsinghua University,
Beijing 100084, People’s Republic of China



-- 
Best!

江卓
Zhuo Jiang
Dept. of Computer Science, Tsinghua University,
Beijing 100084, People’s Republic of China
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