I have recently installed a server with CentOS 7, this was installed whilst the network card was present. The card is a Intel 82599ES 10Gb LC fiber NIC attached to the PCI slot of the server.

The device does appear on the system:

#lspci | grep -i gigabit
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)

#dmesg | grep -i gigabit
[    1.247349] bnx2: QLogic bnx2 Gigabit Ethernet Driver v2.2.6 (January 29, 2014)
[    1.309813] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 5.1.0-k-rh7.5
[    1.474375] ixgbe 0000:04:00.0: Intel(R) 10 Gigabit Network Connection

However, when trying to bring the interface up with ifup p1p1 I get the error:

Bringing up interface p1p1:  Error: Connection activation failed: No suitable device found for this connection.

After some reading it looked as though this was potentially due to a driver fault therefore I have download the latest driver from the Intel website, specifically the 5.3.7 Driver for Linux.

I then followed the guide on Xmodulo to install the driver on the system. After following all the steps and doing a reboot the issue remained the same.

As the next step I removed the ifcfg-p1p1 file and ran nmtui. This has created a new file ifcfg-Wired_connection_1. However, when restarting the network service or trying to bring the interface up I am still getting the error:

#ifup Wired_connection_1
Error: Connection activation failed: No suitable device found for this connection.

A few other bits of info that may be helpful

#lsmod | grep ixgbe
ixgbe                 314916  0
mdio                   13807  1 ixgbe
ptp                    19231  1 ixgbe
dca                    15130  1 ixgbe

#lspci | grep -i 82599
04:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)

#cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.10.0-862.3.3.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_GB.UTF-8

#uname -a
Linux test10g 3.10.0-862.3.3.el7.x86_64 #1 SMP Fri Jun 15 04:15:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

#cat /sys/module/ixgbe/version

#cat /etc/*-release
CentOS Linux release 7.5.1804 (Core)

I am not sure but I believe I may have had this working before with CentOS 6.5, but this was quite a while ago. At this point I am not sure how to proceed and any pointers would be much appreciated before i try 6.5.


I have freshly installed the server (with the card present), with CentOS 6.5 and the card works straight away. I am still not sure how to resolve on CentOS 7 but this resolves my issue for the moment as the software is available under both versions.

  • During research I've found Bug #1264024 and CentOS topic #57187. Can you provide a longer snippet from dmesg (since some important information is missing there)? Can you check if the NIC got an MAC address in log files? Can you also check and provide the Network Manager logs as mentioned in the CentOS Board thread?
    – U880D
    Jun 21, 2018 at 12:33
  • 1
    @U880D I have just updated the question to include confirmation that CentOS 6.5 works without issue. However, I sure would like to know how to fix this for the future. I beleive I stumbled upon similar information regarding the MAC address and I can confirm that the ifconfig output showed a MAC address. After I recreated the ifcfg file with nmtui, I ensured the MAC address was correct in the file, but the issue persisted. I will be reloaidng the server at some point so certainly once I can get back to that point I will post further dmesg logs. Many thanks for replying. Jun 21, 2018 at 13:49

1 Answer 1


Sometime because of unsupported SFP interface won't come up so solution is to create following file to allow unsupported SFP.

create file /etc/modprobe.d/ixgbe.conf

alias ens2f0 ixgbe
alias ens2f1 ixgbe
options ixgbe allow_unsupported_sfp=1


rmmod ixgbe; modprobe ixgbe

add in /etc/default/grub file to fix the issue permanently


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