捕获的数据包的长度大于MTU

问题描述

限时删除！！

我在两台计算机(linux)之间运行iperf，并且可以观察到连接的两个接口的mtu均为1500.

I m running iperf between two machines (linux) and I can observe the mtu of both the interfaces connected is 1500.

我运行tcpdump来捕获数据包，我发现一些数据包具有长度为2962"....为什么只有1500的mtu才有可能?

I ran tcpdump to capture packets and I observed some packets have"length as 2962"....how come this is possible with mtu as only 1500?

请澄清.谢谢！

注意:标志字段设置为DF.而原始协议是TCP

Note: flags field is set as DF. and proto is TCP

推荐答案

关闭gso(在Linux中)起到了作用

Turning off gso (in linux) did the trick

已引用: http://lists.openwall.net/netdev/2008/11/14/20

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