Post up ethtool eth0 gro off
Post up ethtool eth0 gro off. 1 bridge-ports eno1 Here I will use eth0 as my administrative interface (with an IP address assigned by DHCP), and I will configure eth1 and eth2 so that they can be bridged by Snort (no IP address, in promiscuous mode, and disabling LRO and GRO): # Administrative interface auto eth0 iface eth0 inet dhcp # First bridged interface auto eth1 iface eth1 inet manual ethtool -s eth0 autoneg off duplex full speed 1000. if [ "$ACTION" = "up"];then. # ethtool -s eth0 speed 100 autoneg off. Jul 16 09:34:25 smtp1 kernel: e1000: eth0: e1000_watchdog_task: NIC Link is Up 10 Mbps Full Duplex. d and if-down. This command will make the corresponding LED of physical port to blink. If snort is run w/o any DAQ arguments, it will operate as it always did using this module. ethernet-autoneg off. Chapter 28. Nemo. Oct 19, 2011 · You should check your sensors now before you get into a situation where you really need that full packet capture and find out that you don't actually have it. The configuration of your Ethernet card allows your computer to communicate effectively over the network. 13 Run Snort in alert mode (the command we run below is how Snort will normally be run when we set it up as a daemon, except we aren’t using the -D flag which causes it to run as a daemon). ethtool allows you to check if a network cable is correctly plugged into an ethernet port: # ethtool eth0. NetworkManager can configure certain network driver and hardware settings persistently. Dec 28, 2014 · 4. The -h means “help Retrieves and prints firmware dump for the specified network device. Pause parameters for eth0: Autonegotiate: on. UDP throughput over Tailscale Dec 6, 2015 · The instructions below show how to install Snort 2. 79-v7l+ and trying to set /sbin/ethtool -s eth0 speed 100 duplex full The simple reason for that is because it does not work with autoneg / full sp Oct 14, 2022 · I keep getting drop outs from the network with errors in dmseg like. mmm, interesting, I was not aware about that. On my Ubuntu box (Natty Narwhal), "man ethtool" and "ethtool --help" show that LRO is controlled just like GRO; i. post-up /sbin/ethtool --set-eee eth0 eee off. You can run the ethtool command manually to take effect immediately. Supports auto-negotiation: Yes. Output: # tail -f /var/log/messages. Retrieves and prints firmware dump for the specified network device. ethtool -c eth0-g: Displays the ring buffer settings. Feb 2, 2017 · Even with the route entry above, I get > segments just up to advmss, and no warning. Description. interface). It can be used to: Get identification and diagnostic information. 13 To get a sense of how this utility can control settings, run a command like the one below. Another post suggested that this may be due to the EEE setting being on for the eth0. sudo /usr/local/bin/snort -q -u snort -g snort -c /etc/snort/snort. ethtool with a single argument specifying the device name prints current settings of the specified device. Luckily, Ubuntu 18. History. But this doesn't seem to work and EEE is set on after a reboot. snort --daq-list. post-up ethtool -K eth0 lro off `sudo ifconfig eth0 down && sudo ifconfig eth0 up May 25, 2023 · Disable the software flow offloading under firewall if it is not already disabled and install ethtool and check if Generic Receive Offload and Large receive offload is disabled. --version. Append the following two lines for each network interface (making sure to change eth0 to match the interface you are working on, since your interface names may be different): post-up ethtool -K eth0 gro off. Using ethtool you can change the speed of the ethernet device to work with the certain network devices, and the newly assign speed value should be within the limited capacity. To check, run ethtool with the "-k" (lower-case k) option on the interface you'd like to check. allow-hotplug eth0. To control and see the settings of wired Ethernet devices you need to use the ethtool command. conf -i eth0 Ping the interface eth0 from another computer, you won’t see any output auto eth0: iface eth0 inet dhcp: post-up ethtool -K eth0 gro off: post-up ethtool -K eth0 lro off: Restart networking: user@snortserver:~$ sudo ifconfig eth0 down && sudo ifconfig eth0 up: user@snortserver:~$ ethtool -k eth0 | grep receive-offload: generic-receive-offload: off: large-receive-offload: off: user@snortserver:~$ Aug 23, 2014 · To see the pause settings and whether an interface is set up to auto-negotiate, use the -a option: # ethtool -a eth0. Ethtool may be able to enable/disable GRO on specific interfaces. Code: auto eth0. update-rc. Queries the specified network device for associated driver information. High performances NICs can achieve up to 4096 and/or 8192 bytes. This command will turn on the LED lights of the network card on the enp1s0 interface for Dec 28, 2014 · The instructions below show how to install Snort 2. Control checksum offload and other hardware offload features. Dec 27, 2010 · 9 Linux ethtool Examples to Manipulate Ethernet Card (NIC Card) Posted on December 27, 2010 by jlim0930. ethtool -K eth0 gso off gro off tso off tx off rx off rxvlan off txvlan off sg off Nov 16, 2023 · We’re releasing a set of changes that builds on the foundation of our earlier WireGuard performance work, significantly improving UDP throughput on Linux. -T --show-time-stamping. 0 network 10. Sorted by: 8. May 26, 2011 · 2 Answers. 4. Oct 14, 2022 · sudo ethtool --set-eee eth0 eee off. Those solutions would be better than using the /etc/rc. x and 2. Dec 11, 2023 · ethtool -s eth0 speed 1000 duplex full autoneg off-a: Displays the pause parameter settings. 7. Queries the specified ethernet device for pause parameter information. RX: on. sudo apt-get install -y ethtool. Rep: Disable GRO From NIC? [ Log in to get rid of this advertisement] I was told that the reason I'm having network performance issues is due to "generic receive offload" on eth0. Where eth0 is your interface. If I have a physical interface that (for example) has large-receive-offload configured to 'off' and that interface is part of a mode4 bond group that has large-receive-offload set to 'on' which will take precedence? In this configuration is large-receive-offload actually on or off? bond0 config. 10, anywhere in this guide you see eth0, you will need to replace with your new interface name. Verify the applied settings using the following syntax: Aug 1, 2021 · Ethtool is used to view and modify network device driver parameters and hardware settings, especially for wired ethernet devices. By default, it prints out the dump flag, version and length of the dump data. Oct 23, 2023 · Ethtool is a standard Linux utility for controlling network drivers and hardware, particularly for wired Ethernet devices. iface eth0 inet static post-up /usr/sbin/ethtool -s eth0 wol g post-down /usr/sbin/ethtool -s eth0 wol g Obviously, replace eth0 with the relevant interface if different. /sbin/ethtool -K eth0 rx off tx off tso off gso off. The register format for some devices is known and decoded others are printed in hex. Run "ethtool --help | grep lro" to see if yours supports it. Control speed, duplex, auto-negotiation and flow control for Ethernet devices. Or you can use mii-tool (outdated, use ethtool only) # mii-tool -r eth0. ernet devices. Compared to using the ethtool utility to manage these settings, this has the benefit of not losing the settings after a reboot. Jul 16, 2007 · You don’t have to reboot Linux box, all you have to do is type the following command : # ethtool -r eth0. Pcap: The default DAQ, used for sniffer and IDS modes. Jun 7, 2017 · # Routed subnet auto ens160 iface ens160 inet static address 10. -3. While I can set it off using. 10 : In Ubuntu 15. 1. Dec 27, 2023 · Ethtool is a standard Linux utility for controlling network drivers and hardware, particularly for wired Ethernet devices. sudo ethtool -s eth0 speed 1000 duplex full autoneg off but I support Zoredache's comment, you should probably not be forcing the link speed, and unless it doesn't work without it, you should leave the machine set to autoneg, and ensure the network port is set to the right speed. Auto-negotiation of speed and duplex is part of the 1000BASE-T specification, that is gigabit ethernet over unshielded twisted pair copper cables. chmod a+x wakeonlanconfig. GSO是一种让网络设备自己处理数据包分段的技术 The usual default buffering values for regular desktop NICs are 256 or 512 bytes. To do this, run. When data is indicated, then ethtool fetches the dump data and directs it to a file. Improve this answer. ethtool Jan 8, 2017 · post-up ethtool -K eth0 gro off post-up ethtool -K eth0 lro off Important note for people running Ubuntu 16 : Begining with Ubuntu 15. ethtool is used to query and control network device driver and hardware settings, particularly for wired Ethernet devices. x series, and could be used to install Snort on older Apr 22, 2019 · You can check that this is the case using the command ethtool -k ens0f2, and checking that the relevant entries are set to "off". 901 1 5 12. Yes, this can be done with ethtool. x on both the x86 and x64 architectures for Ubuntu 14 and 16. ethtool is used to query and control network device driver and hardware settings, particularly for wired Eth†. Jul 12, 2015 · ethtool -K eth0 gro off gso off gso off lro off Use up-limiter=policy instead of htb in section [shaper] Provide please also output `cat /proc/interrupts` and screenshot command `top` and press 1 apt install -y ethtool ethtool -K eth0 gso off gro off tso off tx off rx off rxvlan off txvlan off sg off iface eno1 inet manual post-up /usr/bin/logger -p debug Please note that as post-up and pre-down are aliases, no files in the corresponding directories are processed. Shows the ethtool version number. 0 broadcast 10. x series release of Snort, these steps will most likely work to install the older Snort 2. And run the netcat transfer again and look at the tcpdump output this time Dec 6, 2015 · post-up ethtool -K eth0 gro off post-up ethtool -K eth0 lro off Important note for people running Ubuntu 15. In order to turn off any offload settings as soon as "eth0" will run into the up status a simple script (mode 751 / owner: root / group: root) like the following can be used: Dec 6, 2015 · Reboot the system and verify that LRO and GRO are off: user@snortserver:~$ ethtool -k eth0 | grep receive-offload generic-receive-offload: off large-receive-offload: off Next we will create a directory to save the downloaded tarball files: mkdir ~/snort_src cd ~/snort_src Download and install Data Acquisition library (DAQ) from the Snort website: Nov 7, 2018 · ethtool -K eth0 rx off 操作完畢後，可輸入：ethtool -k eth0，查看校驗功能是否已被停止。 (3) 如果機器上安裝了兩塊網卡，那麼eth0對應着哪塊網卡呢？輸入： ethtool -p eth0 10 操作完畢後，看哪塊網卡的led燈在閃，eth0就對應着哪塊網卡。 GRO will come into play on the receiving side of the forwarder, and in fact GRO was created so the more greedy LRO method would stop screwing up packets on forwarders. You can set speed and duplex for 10Mbps and 100Mbps, because autoneg Dec 25, 2023 · eth0: Specifies the network interface you want to configure. A Red Hat training course is available for RHEL 8. exit. ethtool -i eth0-k: Displays the offload and other hardware settings. Settings for eth0: The following is an example of how the interface identified as eth0 could be permanently configured with a port speed of 1000Mb/s running in full duplex mode. iface eth0 inet dhcp. You cannot force 1000 full duplex, that's not gigabit ethernet, that's some other thing for which a standard does not exist. Sets the dump flag for the device. local. Changes the pause parameters of the specified ethernet device. speed: Sets the desired link speed (in Mbps), which can be 10, 100, or 1000. When raw is enabled, then ethtool dumps the raw register data to stdout. 10, for new installations (not upgrades), network interfaces no longer follow the ethX standard (eth0, eth1, …). sudo ethtool -p enp1s0 4. If you want a more in-depth explanation of the install steps, as well as instructions on how to configure and enhance Snort’s functionality, see my series on installing Snort on Ubuntu. It will set the eth0 device to 100Mbs, full duplex, with the auto negotiation off at boot time. See interfaces(5) for more information on post-up and post-down commands Jan 28, 2014 · This is a non aggregating TAP, which means I have two "output" cables coming from the TAP to my IDS. 70. so seems that put script in if-up. 2 netmask 255. answered Jun 22, 2011 at 0:40. Dec 18, 2019 · Seems a possible fix would be to disable GSO (Generic Segmentation Offload), TSO (TCP Segmentation Offload) and GRO (Generic Receive Offload) on the network interface*: ethtool -K eth0 gso off gro off tso off. 0 Jul 2, 2022 · ethtool -K eth0 tso off gso off gro off ethtool -K br-lan tso off gso off gro off ethtool -K ifb4br-lan tso off gso off gro off I have tried ap… Hi, if i enter via Putty this command : ethtool -K eth0 tso off gso off gro off rx off tx off ufo off lro off rxvlan off txvlan off do i have to reboot to apply the changes ? thanks in advance . Underneath that, indented further, you want to create a post-up and post-down commands e. Usually, servers have several network cards, so one way to identify which one is related to the network interface is to turn on its LED light. S. You can change ethernet card parameters as required, including auto-negotiation, Speed, Duplex and Wake-on LAN. To view the capability and the current values of your interface, you’ll need “ethtool”. Footnotes Jan 24, 2022 · Im am trying to disable autonegotiation on the eth0 interface on a TRB140 using ethtool using the command `/usr/sbin/ethtool -s eth0 speed 100 duplex full autoneg off` Most of the time, this command does not work, even `ethtool eth0` gives the following output: root@TRB140:~# ethtool eth0 Settings for eth0: Cannot get device settings: No such Jan 2, 2024 · Here’s an example of how you can use ‘ethtool’ to view the settings of a network interface called ‘eth0’: ethtool eth0 # Output: # Settings for eth0: # Supported ports: [ TP MII ] # Supported link modes: 10baseT/Half 10baseT/Full # 100baseT/Half 100baseT/Full # 1000baseT/Half 1000baseT/Full # Supported pause frame use: No # Supports Dec 6, 2015 · post-up ethtool -K eth0 gro off post-up ethtool -K eth0 lro off Important note for people running Ubuntu 15. For example: ethtool -s eth0 autoneg off duplex full speed 1000 Mar 29, 2021 · 3 minutes. You can simply restart the networking (it will disconnect all ssh or ftp session) or restart the server. Settings for eth0 : Supported ports: [ MII ] Supported link modes: 10baseT/Half 10baseT/Full. Retrieves and prints a register dump for the specified network device. -h --help. -d --register-dump. Posts: 2,905. 8. 指定できる短縮された項目名について詳しくはman ethtoolの-Kの項目を見て確認して下さい。 オフロード設定項目の簡単な説明 rx Feb 1, 2020 · Finally, test the ethtool from command line and make sure it switches the speed without any issue before trying it from the script because it might not be a problem with your script but with the driver or card or anything. -W --set-dump. This will output something like this : Dec 11, 2013 · Change the Speed of Ethernet Device. If you want a more in-depth explanation of the install steps, as well as instructions on how to configure and enhance Snort’s functionality, see my in-depth series for installing Snort on Ubuntu. 0. 6. ethtool -s eth0 wol g. Queries the specified Ethernet device for pause parameter information. 168. # ethtool -K eth0 gro off. For example, to check eth0: ethtool -k eth0. ethtool -k ethx lro off. 255. Indeed you can see that the command: # ethtool -K ens0f2 gro off. Mar 18, 2024 · The ethtool is a command-line tool in Linux for managing network interface devices. g. I've tried adding this to /etc/network/interfaces. Generic receive offloading (GRO) is not a device feature, but a Linux network stack feature, and that can be changed. sudo ifup enp7s0. ethtool -g eth0-i: Displays the driver information. The changes that you make to the ifcfg file for a network interface takes effect only when the ifup script runs, which is usually when the machine boots up. Get extended device statistics. pre-up /sbin/ethtool -s eth0 speed 1000 duplex full. ethtool -K ethX lro off. 8k 10 121 159. Depends on the version. This doesn't persist over reboots. ethtool -a eth0-c: Displays the offload and other hardware settings. Example output: Setting link speed on eth0 to 1000 Mar 3, 2020 · "ACTION" basically defines the event (pre-up, up, down, post-down) whereas "INTERFACE" and "STATUS" is pretty much self explaining. If you are running Ubuntu 15. Dec 29, 2020 · In addition, you can change each option individually: sudo ethtool -s enp7s0 speed 100. ACTION=$2. Systemd-networkd does provide some options to disable offloading, although I wasn’t able to find options for all of the features available in ethtool, for this reason I’ve not investigated it further. And make the script run on startup. d or as post-up stanzas is the same. Mar 15, 2013 · It also seems that you can directly specify ethtool option in the /etc/network/interface file: iface eth0 inet dhcp. x on both the x86 and x64 architectures for Ubuntu 12, 13, 14, and 15. OPTIONS top ethtool with a single argument specifying the device name prints current settings of the specified device. For Example: ethtool -K external gro off. Dec 31, 2020 · I'm on a raspberry pi 4b /home/pi# uname -r 5. Wim Kerkhoff. List Ethernet Device Properties. Our changes improve throughput for HTTP/3, QUIC, and other UDP-based applications through the use of segmentation offloads. sudo ethtool --set-eee eth0 eee off. d directories instead. # ethtool -K eth0 lro off. Note: Once you change the speed when the adapter is online, it automatically goes offline, and you need to bring it back online using the ifup command. sudo ethtool -s enp7s0 autoneg on. I was told to use the following command: Code: ethtool -K eth0 gro off. So now lets turn Generic Segmentation Offloading off using ethtool : sgordon@ginger$ sudo ethtool -K eth0 gso off. It allows us to modify the parameters of the devices and query the information of those devices. exit 0. Configuring ethtool settings in NetworkManager connection profiles. Sep 4, 2020 · Use ethtool to change eth0 advertisement $ sudo ethtool -s eth0 advertise 0x008 $ It may take a few seconds for RPi to "digest" this change. 1. Then make the script executable. Workaround. 20/24 gateway 192. Apr 1, 2019 · ethtool -K eth0 rx on. GRO will come into play on the receiving side of the forwarder, and in fact GRO was created so the more greedy LRO method would stop screwing up packets on forwarders. 255 gateway 10. Other NICs may be handled via ethtool tool with a command such as: Raw. 3. Dec 11, 2020 · If you have multiple ethernet adapters connected to your system, you can use the following command to identify the physical port of a particular ethernet card. duplex: Sets the desired duplex mode, which can be ‘half’ or ‘full’. It will disable all offloading. Please use if-up. But after adding a new network interface on one of my vm with the VLAN tag 20, the host freeze issue returns. Mar 3, 2020 · In order to turn off any offload settings as soon as "eth0" will run into the up status a simple script (mode 751 / owner: root / group: root) like the following can be used: ====================================================. e. On Debian, the ethtool package now provides an if-up. Dec 6, 2015 · Use an editor to edit the network interfaces file: 1 sudo vi /etc/network/interfaces and for every interface that Snort will listen on (one interface for simple setups, multiple interfaces for more complex setups), add the following two lines, changing eth0 to match the interface: 1 2 post-up ethtool -K eth0 gro off post-up ethtool -K eth0 lro In my case, what was originally eth0 is now ens160. But if it’s missing, we can install it with the distro’s package manager. However, this doesn't persist over reboots. 0. Jan 8, 2017 · The instructions below show how to install Snort 2. Simply do the following command : ethtool -g eth0. In my case, what was originally eth0 is now ens160. 1 post-up ethtool -K ens160 gro off post-up ethtool -K ens160 lro off # Host Subnet (internal network / screened subnet) auto ens224 iface ens224 inet static address 192. Turn off GRO using the following syntax: ethtool -K <VLAN> gro off. TX: on. address 192. sudo ethtool -s enp7s0 duplex full. answered May 26, 2011 at 4:59. ifnames=0 kernel boot option to enable old interface names). Sep 24, 2019 · The ethtool -s command can be used to change the current settings by defining the values for speed, duplex, and autoneg in the following format: sudo ethtool -s [device_name] autoneg [on/off] speed [10/100/1000] duplex [half/full] For example, to set the speed at 1000Mb/s, the duplex mode to full and the auto-negotiation to on the command would Jan 8, 2017 · The instructions below show how to install Snort 2. link-speed 10. Just make sure you have the latest version. Feb 3, 2012 · How to force Network Manager to set auto negotiation to false/off for a particular NIC (eth0) on start-up? Apr 2, 2010 · Hi, the ethtool fix works fine, and I've set-up a post-up action to run in each time eno1 is up. #ethtool -p <interface_name>. Note: It is expected behavior for other features to be disabled when running this command. # Ethernet. -A --pause. Share. 1000baseT/Half 1000baseT/Full. Oct 28, 2010 · 9 Linux ethtool Examples to Manipulate Ethernet Card (NIC Card) Ethtool utility is used to view and change the ethernet device parameters. I have applied this to my setup and I’m waiting to see if this will actually solve the issue in the long run. 9. FCS > perhaps? > > Markus, do you have other interfaces in your system? Which MTU do you > use, and please try the (untested) patch below, to gather more debug > info: No, eth0 is the only Sep 20, 2021 · $ which ethtool /usr/sbin/ethtool $ sudo ethtool —version ethtool version 5. Shows a short help message. Aug 2, 2021 · post-up /sbin/ethtool -K eno1 gso off gro off tso off tx off rx off auto vmbr0 iface vmbr0 inet static address 192. P. Check the man page. autoneg: Sets the state of auto-negotiation, which can be ‘on’ or ‘off’. > > Though yeah, interesting that this driver doesn't even support GRO. iface eth0 inet static. As with the previous work, we intend to upstream these changes to WireGuard. link-duplex half. Sep 28, 2006 · Append following line: ETHTOOL_OPTS="speed 100 duplex full autoneg off" Save and close the system. May 25, 2011 · 1. Tag. local trick as they keep all network configuration in a single and standard place. d script that implements options for offloading (and other ethtool settings). Control speed, duplex, autonegotiation and flow control for Ethernet devices. Note: while this guide focuses on the current 2. Post Views: 2,455. 这些技术一般用来提高网络性能，减少CPU的负担。. maybe can you use vlan-aware bridge Feb 18, 2016 · Here I will use eth0 as my administrative interface (with an IP address assigned by DHCP), and I will configure eth1 and eth2 so that they can be bridged by Snort (no IP address, in promiscuous mode, and disabling LRO and GRO): # Administrative interface auto eth0 iface eth0 inet dhcp # First bridged interface auto eth1 iface eth1 inet manual This will give you a better understanding of the software components that make up Snort, and will allow you to configure Snort for your own needs. Please write an /sbin/ifup-local script to persist the ethtool configurations. # ethtool eth0. That article I linked to above really helps. Thanks to the geek stuff. When you execute ethtool command with a device name, it displays the following information about the ethernet device. I quickly realized that I only knew how to bond two interfaces together on CentOS/RedHat. Apr 14, 2004 · user@snortserver:~$ sudo ifdown eth0 && sudo ifup eth0 user@snortserver:~$ ethtool -k eth0 | grep receive-offload generic-receive-offload: off large-receive-offload: off user@snortserver:~$ If the interfaces do not show LRO and GRO as off, reboot and check again (it can be difficult to get Ubuntu to reload the network configuration without a user@snortserver:~$ sudo ifconfig eth0 down && sudo ifconfig eth0 up user@snortserver:~$ ethtool -k eth0 | grep receive-offload generic-receive-offload: off large-receive-offload: off user@snortserver:~$ if the interfaces do not show LRO and GRO as o , reboot and check again (it can be di cult to get Ubuntu to reload the network con guration Mar 5, 2010 · This is Generic Segmentation Offloading going to work: the OS is sending large segments, as captured above, and letting the NIC do the real segmentation. bcmgenet_xmit: tx ring 1 full when queue 2 awake. 04 comes with the networkd-dispatcher Apr 1, 2019 · Run the following command to see the list of modules you currently have installed and the modes that they can be enabled in. On the physical server, I installed Security Onion as a sensor only, and the TAP interfaces ended up being eth0 and eth2 (eth1 is the mgmt. 続けて複数の項目を並べて一度に設定することもできます。 ethtool -K eth0 rx on tx on sg on tso off gso off gro off. It will be different of course (or you may use the net. 100baseT/Half 100baseT/Full. Aug 21, 2018 · Netplan doesn’t offer a way to turn off offloading within its configuration. devname is the name of the network device on which ethtool should operate. Also, seems to me that the trouble came from the fact that network 1. Dec 28, 2014 · In my case, what was originally eth0 is now ens160. Assuming it completes without error, verify the change was accepted: $ ethtool eth0 $ The Advertised link modes should now show only the desired option: Advertised link modes: 100baseT/Full Nov 10, 2023 · 这个命令是用来关闭网络设备（在这个例子中是eth0）的几种网络优化技术：GSO（Generic Segmentation Offload），GRO（Generic Receive Offload）和TSO（TCP Segmentation Offload）。. The following two tabs change content below. d -f wakeonlanconfig defaults. Disable GRO/LRO/TPA or other RX/receive accelerations. We would like to show you a description here but the site won’t allow us. Aug 30, 2010 · Distribution: Arch. Yes, if your ethtool is new enough. Oct 3, 2019 · ethtool -K external lro off. -a --show-pause. To view /sbin/ethtool -K eth0 tso off. Your pre-up statement would presumably need to be something like: This article describes Ethernet specifics, general network configuration is covered in Network configuration . You can create a script named, for example, wakeonlanconfig which contains the following: #!/bin/bash. Turn on the LED lights on the card to identify a specific network card. I had the problem that only LRO was disabled with software flow offloading but I had to disable GRO with ethtool (ethtool -K eth0(1) gro off) and add it to rc. You can also test the following line: /sbin/ethtool -K eth0 tso off gso off gro off lro off. [me@host1 ~]$ ethtool -k bond0 | grep large. 10, network interfaces no longer follow the ethX standard (eth0, eth1, …). The ethtool usually comes with any distribution of Linux. pn kf ru qf kc rs ha ri hz no