>> 3) the network adapter on the machine is doing TCP
segmentation
>> offloading on the receive side and passing simulated jumbo
frames to
>> the host.
>
>As the trace was made on the sending side, I suspect that the
FTP
>server is indeed offloading TCP segmentation to the NIC. If
you want
>to be sure, you could make a trace on the server and at the
same time
>on the client to verify that the large packets are indeed
segmented
>to normal sizes on the wire.
TCP segmentation offloading (TSO from wikipedia), wow
something new every day :-)
Tested on the clientside and there the fragments was as
excpected, so I checked the linux machine.
ethtool -k eth0 and it has TSO enabled.
So for my testing I can actually turn it off, to get better
wireshark traces.
Thanks for the help.
/Martin
