From mboxrd@z Thu Jan  1 00:00:00 1970
From: Markus Trippelsdorf <markus@trippelsdorf.de>
Subject: "TCP: eth0: Driver has suspect GRO implementation, TCP performance
 may be compromised." message with "ethtool -K eth0 gro off"
Date: Thu, 2 Feb 2017 12:52:40 +0100
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Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
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Hi,

from time to time I see the following warning in my kernel log:

 TCP: eth0: Driver has suspect GRO implementation, TCP performance may be compromised.

This happens although I run "/usr/sbin/ethtool -K eth0 gro off" in my
local boot script. 
What is the warning trying to tell me?

-- 
Markus