From mboxrd@z Thu Jan  1 00:00:00 1970
From: Remy Horton <remy.horton@intel.com>
Subject: Re: ethtool doesnt work on some interface after
 unbinding dpdk
Date: Fri, 15 Apr 2016 08:50:10 +0100
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Cc: dev@dpdk.org
To: Gopakumar Choorakkot Edakkunni <gopakumar.c.e@gmail.com>
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On 14/04/2016 20:25, Gopakumar Choorakkot Edakkunni wrote:
[..]
> ge8----->   06:00.0 Ethernet controller: Intel Corporation 82576 Gigabit
> Network Connection (rev 01)
>
> root:~# ls /sys/class/net/ge8/device/driver/module/drivers/
> pci:igb
> root:~#
>
> root:~# ethtool ge8
> Settings for ge8:
> Cannot get device settings: No such device
> Cannot get wake-on-lan settings: No such device
> Cannot get message level: No such device
> Cannot get link status: No such device
> No data available

Seems a little odd. Does dmesg show anything related to igb/ixgbe when 
you try this?

..Remy