walter ferry dissmann wrote:
Good to know, and to avoid those nics for my future servers

Nick Howitt wrote:

It is not just a ClearOS issue. If you follow the links through, the solution was found on a Ubuntu machine. This is a completely different stable to FC/RHEL/CentOS/ClearOS, so I'd assume it is a Linux-wide issue.

Re the r8168, this has never been part of the kernel so the issue will affect at least all FC/RHEL/CentOS/ClearOS derivatives and may also be Linux-wide if other distro streams have not backported the r8168 stud into the r8169 driver.

Nick Howitt wrote:

Note that from the thread I linked to, upgrading the driver did not help - the OP started with the kmod driver then downgraded but neither helped. Turning off tso seemed to be the only solution, whichever driver is used.

Nick Howitt wrote:

I don't think it will help because the only recent issues I've heard about the e1000e driver are in the thread I linked to, but you are welcome to try my driver. If you are miles away, once installed, you will need to reboot the server to make the change take effect. Anything else risks losing the interface and should only be attempted while on site.

Nick Howitt wrote:

You can't use the ElRepo drivers directly. You need to recompile the source against the ClearOS kernel, but I don't think that will help you. If you think it will help I have a compiled version here.

Have a look at this thread and see if it helps.

ethtool -K eno1 tso off

[root@fwrps ~]# ethtool -i eno1

driver: e1000e

version: 3.2.5-k

firmware-version: 0.8-4

bus-info: 0000:00:1f.6

supports-statistics: yes

supports-test: yes

supports-eeprom-access: yes

supports-register-dump: yes

supports-priv-flags: no

Mon Nov 28 10:09:33 2016 info: eno1 - ping check on gateway failed - 192.168.0.1

Mon Nov 28 10:09:35 2016 debug: eno1 - ping check on server #1 failed - 8.8.8.8 (ping size: 1)

Mon Nov 28 10:09:37 2016 info: eno1 - ping check on server #1 failed - 8.8.8.8

Mon Nov 28 10:09:44 2016 info: eno1 - ping check on server #2 failed - 54.152.208.245

Mon Nov 28 10:09:44 2016 warn: eno1 - connection is down

Mon Nov 28 10:09:46 2016 info: eno1 - waiting for static IP reconnect

Mon Nov 28 10:09:46 2016 info: system - changing active WAN list - none (was eno1)

Mon Nov 28 10:09:46 2016 info: system - current WANs in use - none

rpm -e kmod-e1000e

/sbin/weak-modules --add-kernel --dry-run --verbose 2.6.32-504.8.1.v6.x86_64

Module igb.ko from kernel 2.6.32-431.23.3.v6.x86_64 is not compatible   with kernel 2.6.32-504.8.1.v6.x86_64 in symbols: set_ethtool_ops_ext

[root@server ~]# modinfo r8168

filename:       /lib/modules/2.6.32-504.8.1.v6.x86_64/weak-updates/r8168/r8168.ko

version:        8.039.00-NAPI

license:        GPL

description:    RealTek RTL-8168 Gigabit Ethernet driver

author:         Realtek and the Linux r8168 crew <netdev@vger.kernel.org>

srcversion:     1ABAB2C5CDB55DDB867B0D8

etc