[CentOS] centos 6 and super jumbo frames

Tue Nov 10 17:45:54 UTC 2015

> On Nov 9, 2015, at 11:34 AM, Steve Clark <sclark at netwolves.com> wrote:
> 
> IP 10.79.4.53.64327 > 10.79.2.53.24294: Flags [.], seq 16060:29200, ack 1, win 32767, length 13140

Do you have RSS enabled? With RSS the software/tcpdump sees larger "packets" but the physical NIC chunks down to the wire MTU. What does a capture on the destination show?

https://en.m.wikipedia.org/wiki/Receive-side_scaling#RSS