General :: Ethernet Interface Not Found - Eth0
Jul 19, 2011
I booted an OS from a live CD. The OS boots successfully but eth0 fails to start. I checked lspci, it outputs these Ethernet card details:
(Broadcom Netextreme II BCM5716 GBabyte ethernet)
ifconfig -a returns only the loopback interfaces lo and sit0. The output of dmesg | grep -I 'eth' is:
"Netfront : initializing network ethernet driver"
When I run service network restart I get:
"Obtaining IP for lo [FAILED]
WARNING: Deprecated config gile /etc/modprobe.conf , all config files belong into /etc/modprobe.d/
Device eth0 does not seem to be present, delaying initialization [FAILED]"
The output of MII-tool -v is:
No MII interface found.
I was also able to find the kernel module bnx2.ko. I did insmod and lsmod lists it.
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Mar 8, 2010
If I uncheck and recheck "Enable Networking" in the Network Manager Applet 0.7.996 I would expect the wired network to disconnect (which it does) and reconnect (which it does NOT). So I tried sudo ifdown eth0 and got
Quote:
Ignoring unknown interface eth0=eth0.
ifconfig tells me
Quote:
eth0 Link encap:Ethernet HWaddr 00:25:64:e8:18:2c
inet addr:192.168.0.112 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::225:64ff:fee8:182c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
so I am at a loss. How do I stop and restart the network interface short of rebooting the machine?
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Aug 27, 2011
I'm having trouble getting my Ubuntu 10.04 machine (Sony Vaio VGN-SR490) to connect to the Internet by way of an Ethernet cable connected directly to my router.
I'm able to connect to the Internet using this same cable using a Windows machine, so there's something wrong with the way Linux is configured.
How do I got about figuring out what the problem is and solving it?
Here are my network settings on Linux:
$ ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
[Code].....
It looks like the network adapters list is empty. I will now install both Windows XP and Ubuntu Linux dual-boot. I'm still not able to access the internet, even through Windows. I'm wonder if this could be a hardware problem with the computer or a problem with the router itself. Other computers can connect to this same router, and work fine. (That's how I'm posting this after all!)
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May 5, 2010
My network name is eth2 it was changed by some reason and now i got these errors... i installed, reinstalled, re re installed, tried to run the asistant but no luck :/
Code:
* Stopping the Firestarter firewall...
eth0: error fetching interface information: Device not found
eth0: error fetching interface information: Device not found
eth0: error fetching interface information: Device not found
[code]....
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Jul 18, 2011
I booted an OS from live disk. The OS boots successfully but eth0 fails to start. I checked lspci , it outputs the exact ethernet card details :(Broadcom Netextreme II BCM5716 Gigabyte ethernet)
Ifconfig -a returns only loop back interface lo and sit0. The output of dmesg | grep -i 'eth' is :"Netfront : initializing network ethernet driver"
I was also able to find the kernel module bnx2.ko. I did insmod and lsmod lists it. I am not sure what exactly is the issue or how to debug this problem. Any assistance or pointer will be helpful. Thanks for your time.
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Nov 15, 2009
I have 2 network cards eth0 and eth1, for eth0 i set a manual MACADDR in network scripts. Ok so every time i boot, if the cable is plugged in, my eth0 fails to mount or i don't know.. i get this after bood when i type ifoncifg eth0 (eth0: error fetching interface information:Device not found). So i have to unplug the cable when i boot, then plug it in and do a service network restart.
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Mar 12, 2010
I have tried the command on ubantu workstation but it giving error : # mii-tools SIOCGMIIPHY on 'eth1' failed: operationsnot support. no MII interface found.
Internet not working. tell me anonymous of kudzu command in fedora.
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Dec 18, 2010
I'm running a dual boot Ubuntu 10.04/Backtrack 4 (Ubuntu 8.10) system. I can get internet in the BT4 side but not in the Lucid side. In Lucid I can ping my router, and the network manager says I'm good to go, but I can't get to any web sites. It all started when I tried to put my laptop on another network by mimicking the settings of a computer I had just unplugged from the network. MAC address and all.
ifconfig eth0:
Code:
eth0 Link encap:Ethernet HWaddr 00:1f:16:ba:4c:8c
inet addr:10.136.9.147 Bcast:10.136.9.159 Mask:255.255.255.240
inet6 addr: fe80::21f:16ff:feba:4c8c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
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Sep 1, 2011
My laptop was working fine on wireless till the userinterface changed and it defaulted to ethernet and now it won't let me go back on wireless How do i disable ethernet?
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Apr 14, 2011
I found multiple sites explaining how to add IPs to a network interface as virtual interface like eth0:0. However I can add IPs to an interface as well using the ip command: ip a a 192.168.2.2/24 dev eth0 What I want to know is how I can make this persistent on rhel/centos.
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May 14, 2011
I am trying to connect my fresh new Ubuntu 10.10 to my router. However I am having a bit of difficulty. This is what I have done so far:
Code:
lspci
My devise is a Broadcom Corporation BCM4311 802.11b/g WLAN (rev 02). Then:
Code:
sudo ifconfig eth0 up
sudo iwlist eth0 scan
I get eth0 Interface doesn't support scanning.
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Feb 10, 2010
I have set 'ONBOOT=no' in interface script '/etc/sysconfig/network-scripts/ifcfg-eth0:2' but my interface bring up at boot time, what is the problem , I have checked it 3 or 4 diff os/machine but the same issue. Can anyone please help me to disable virtual IP's at boot time that network script make it up every boot time.
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Jul 13, 2009
On my machine (Desktop PC) I have 2 network card : wireless (rt61 802.11) and a wired card (BCM44). When I install debian 5.
The wired card is detected and logical name eth0 is assigned, while wireless is not assigned I install firmeware* software to configure the card. It is done in some way ( I used mnetwork from mepis, it works fine).
Now the problem: eth0 disapears, and no eth0 inteface found? ifconfig gives just wlan0.
Question: Why there is no eth0, it was before configuration of wlan0 ?
How to active again eth0, or ho to create the logical eth0?
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Dec 26, 2010
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
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Jan 29, 2010
i have just installed fedora core 12. my pc has 2 lan adapter. 1. onboard rhine. 2. intel card. os has given eth0 to onboard card and eth1 to intel but i want eth0 to intel card and eth1 onboard card.
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Jun 17, 2010
What is the Linux command to clear IP address of an interface without bringing it down and/or restarting network services. Seems strange ifconfig is able to change IP address but has no option to clear it, or am I wrong?
EDIT:As simple as ifconfig eth0 0.0.0.0. They should have put it in the man
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Jun 28, 2010
I need to ask about Virtual Interface, as I need to use my ethernet interface to act as two ethernet ports. As I need to give eth0 an IP address and give eth0.5 another ip address, and make some natting and other issues. Can I do that with the same interface?
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Nov 16, 2010
I am using Avast anti-virus for my linux machine. On internet, I found that it has good user interface. After installing avast I can't get the interface. I've to use Avast via terminal. How can I get the user interface??
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Jan 24, 2010
During install of 9.10 server, both ethernet adapters were found. One is built-in to the motherboard, the second is on a PCIe slot. Selected the on-board adapter for eth0 during install, set fixed IP on the web, connected, updated, etc. w/ no problems. The second adapter is for the LAN.BUT, on first and subsequent reboots after installation complete the second adapter is not detected at all, as if it were not even plugged into the PCI or the driver not loaded. This happens on either of two slots, with two different adapters, Intel or Netgear, both pretty recent, and both of which are detected and work in a different box. 'Ethtool eth1' says device not found.This is a fairly recent motherboard 3N78EM).Since the adapter was found during installation I'm assuming that the problem is not with not the board. I've built several server systems with two or three ethernet adapters and have never run into this situation.
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Feb 9, 2010
I am attempting to install centos5 x86_64 on to an HP Compaq 6820s laptop.It appears the installation has gone ok but I have a big problem in that the centos installation knows nothing about the hardware on the laptop. i.e. it does not recognise the eth0 ethernet card.this means that I have no way of assigning an IP address to the laptop which means that it cannot join the network or the internet.how do you go about getting the correct drivers for the hardware that you are using?
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Jan 6, 2011
The following are the output of command "ifconfig -a":
[Code]....
The interface "eth0", which is down, was not displayed, but loopback interface has been displayed. So, how can I make my application display all interfaces, including the interfaces which are down, but excluding the loopback interface?
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Mar 16, 2011
I have already tried reloading the drivers, restarting the interface (which is missing) and every other solution I found on this forum (well... not exactly all of them but many of them) uname -a gives Linux hostname 2.6.35-27-generic #48-Ubuntu SMP Tue Feb 22 20:25:46 UTC 2011 x86_64 GNU/Linux
[Code]....
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Jul 3, 2011
i am having issues with networking on a certain liveCD.all ubuntu installs ive done on this machine im sure work fine, but i may have had issues with older backtrack versions.My issue is no networking on boot of SamuraiWTF, for those unfamiliar its based on ubuntu 9.04 There is nothing except lo loopback when i run 'ifconfig', and there is nothing in /etc/network/interfaces for eth0 either.
lspci shows a Broadcom driver, but the same command shows the model number etc on a newer ubuntu install on the same machine. This is:
Broadcom NetLink BCM57780
I have the latest .tar.gz of the tg3 drivers suggested by Broadcom, but im lost on how to install them.
-------------------------------------------------------
EDIT: it seems to be an issue with earlier kernels, i installed 2.6.35 and it worked but the kernel isnt mean for 9.04 i dont think, and now theres issues with the nvidia card
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Jan 31, 2010
I have two network interfaces on my computer but only one of them is connected to an Ethernet cable. Until now on every Fedora release, the activated primary interface has been named as eth0 and everything has always worked well without any problem. Recently I switched to Fedora Core 12 and surprisingly I observed that for the first time, my primary interface has been considered by the system to be eth1 instead of eth0. I tried to replace the content of ifcfg-eth0 by ifcfg-eth1, yet system gave me an error that there was MAC address mismatching. I conserved their MAC addresses in their files and just replaced other connection parameters ( such as IP ADDR, NETWORK, NETMASK, etc.) but it did't work. When I do "server network restart", the command blocks.
As I try to install oracle on this system, regarding the fact that oracle requires static network configuration on the primary network interface, I don't know how to proceed in order to set eth0 as my primary interface (or rather set the current eth1 to eth0 because it is actually eth1 that refers to my activated primary network card).Just one more time, I would like to remark, that with previous versions of the Fedora Core, on the same computer (with the very same two network cards) I never had problem and I had installed oracle on the system with success, having the statically configured eth0 correctly detected by the system.
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Aug 13, 2010
I'm having the same Harker2010 's problem.Running 10.04 LTS on a Dell latitude D-820, and switching between lan and wifi worked OK until last upgrade.Harker2010's screenshots are also valid for my problem. I've tried everything I see on this post but the problem still there.
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Nov 6, 2010
I'm using CENTOS 5.5 and I want to connect to internet using 2 pppoe accounts same ISP and i have a sigle NIC eth0.I used adsl-setup to create pppoe connections, 1 is ppp0 and second is ppp1. When i use /sbin/ifup ppp0 it works, i can use the internet, but when i try to use /sbin/ifup ppp1 while ppp0 is connected, nothing happens, i did ifconfig and there is only ppp0 showing.I'm a BIG NEWBIE of linux, i need to know step by step how to make this work, i heard something about a virtual network... but nothing clear.
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Jul 19, 2010
I have followed th given site for HA configuration in my virtualbox but heartbeat is not assigning virtual IP for interface eth0 [URL]...
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Nov 6, 2010
I'm using CENTOS 5.5 and I want to connect to internet using 2 pppoe accounts same ISP and i have a sigle NIC eth0.I used adsl-setup to create pppoe connections, 1 is ppp0 and second is ppp1. When i use /sbin/ifup ppp0 it works, i can use the internet, but when i try to use /sbin/ifup ppp1 while ppp0 is connected, nothing happens, i did ifconfig and there is only ppp0 showing.I'm a BIG NEWBIE of linux, i need to know step by step how to make this work, i heard something about a virtual network... but nothing clear.
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Jan 17, 2011
I had F14 up and running as a server working awesome. I shut it down and moved it. Now on start up, system doesn't seem to recognize my ethernet card...eth0. How to get my ethernet card back online?
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Dec 12, 2010
I have 2 LAN ports. one from the motherboard (on board) and the other from a lan card i bought a few days back. one is use for browsing the net, the other for a media player.
problem is i cant connect to both the eth0 and eth1 at the same time. i have to disconnect one of them to connect to the other. and this really gets irritating as it doesnt always work as flawlessly as it should. what am i doing wrong?
Output of "ifconfig":
Quote:
I'm on ubuntu desktop 10.10 64 bit.
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