Ubuntu Networking :: Eth0 Is Not Showing In Network Connection?

Sep 25, 2010

I have recently upgraded the ubuntu desktop edition from 8.04 to 10.04. after upgrading i cannot show my eth0 nic interface in the System > Preferences > Network connections----- wired tab. and i also not getting network indication in the top of the panel beside the date time indication. but i can access network and using internet with that lan card. i cant understad my eth0 is connected or unpluged..

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Ubuntu Networking :: Sharing Internet/LAN Eth0 Connection Via Wi-fi Ad-hoc Network

Dec 1, 2010

I've got access to my LAN and the Internet via my wired ethernet connection. I'd like to share that access with my iPod Touch (device shouldn't really matter) via an Ad-hoc wi-fi network.

This tutorial in the docs seems to describe the right setup but is very out of date (7.04). Instead I found this tutorial and followed it to create the Ad-hoc wireless network. I was able to connect my touch to the resulting ad-hoc network without a problem, but I didn't have LAN/Internet access.What's the next step to get the clients on the ad-hoc network out to the Internet?I found this page in the docs that says I'd need to install dnsmasq-base and uninstalling dnsmasq. I checked and dnsmasq-base is already installed but dnsmasq is not. I do have dnsmasq in /usr/sbin but the package description makes it sound like this should come with dnsmasq. Is the page out of date? Will uninstalling dnsmasq cause other problems?

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Ubuntu Networking :: Connection To Network - Terminal: Ifup Eth0 Don't Fix Until Next Reboot

Mar 3, 2010

I have my ubuntu box hard wired into my network. It all works fine, until I reboot my ubuntu box. After reboot, it can no longer see the network. I have it set up with a static ip. Not sure that I set it up completely correctly but it works fine...when working.. To fix the problem, I enter terminal: ifup eth0 That fixes all know problems until next reboot. What do I need to do so that it will remember settings and automatically be hooked into the network at power up?

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Ubuntu Networking :: Check The Network Connection Applet, It Display Active Information Of Eth0?

Jun 7, 2010

I have a question regarding the configuration of Network Connection. My wired connection is fine right now and when I check the network connection applet, it display active information of eth0. However, when I click the Configure button, the Network Connection window appears but there's nothing in the Wired panel. Should there be a eth0 in that panel? I remember I had one before, but after I messed with some configuration of VPN, my network became unstable and I remove the Network Manager to try to solve the problem. Since then, there's nothing in my Network Connection window, though I can still connect to my router with eth0. Now even after I reinstalled the Network Manager, I still don't get anything.

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General :: Connecting To Network - Other Host Cannot Ping - Eth0 Not Showing In Ifconfig Report - Ver1.qu1

Jan 13, 2010

i know this is crazy, but im using a [URL] and have loaded a copy of "red hat linux 7" on the computer. i have no idea what kind of hardware config/spec stuff i should have in my immediate vision, and if i did i'm not sure how i would make sense of it all. linux loaded fine. didnt save drivers. eth0 not showing in ifconfig report, but lo is connecting to network, other host cannot ping linux and vice versus

can mount a cdrom, but not a usb flash dont quite understand how the load methods work involving /mnt/cdrom/"usbutils-0.86tar.gz" eth0 problems and gnome rpm stupidity keeps me from upgrading sys from old version to a newer version, cant even find the cmd to show me that info, sorry. have usb files i want to mount, dont know how to loAD THE CDROM FOLES, SO EVEN THAT ISNT WORKING OUT HAVE DISCS WITH howtos just need to stay focused on steps to get desired end result, while trying to learn too much info for what im currently doing between all the f!@#@ing windows i have open.

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Ubuntu :: 9.04 - No Network Connection (Auto Eth0 Set To Never)

Dec 13, 2010

When I log onto my Ubuntu 9.04 boot I am disconnected from the internet, on my windows 7 boot It works just fine, I have attempted disabling networking, power cycling the modem and router, and re-enabling networking, no dice though. hovering over the connection icon tells me that there is no network connection.

Opening the edit connections window tells me that there a wired connection called Auto eth0 that is set to never, and that is all that I can find. I hunted for other forums on this and found a few but none with a successful resolution.

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OpenSUSE Network :: Using 11.3 Gnome And Cannot Fix The Eth0 Connection

Apr 23, 2011

I'm using 11.3 gnome and cannot fix the eth0 connection. Tried to make it work with connection manager, ifup but both of them did'n make eth0 work. Here are some logs that you might wanna see:

lsmod:
Module Size Used by nls_utf8 1165 1 st - Pastebin.com
ifconfig:
eth0 Link encap:Ethernet HWaddr 1C:6F:65:47:03:16 UP BROADCAS - Pastebin.com
ifdown eth0:

[Code]....

I have TP-LINK router that sends wireless signal through the house which I'm using on my laptop's Ubuntu to connect on the internet, also I can connect with Ubuntu from laptop via the same cable that I'm trying to use on my desktop, so the router and cable are working. Also on my dekstop I've installed Windows 7 and can't connect from there either. The computer is new so i doubt that there is something wrong with its hardware. It all started when my connection disappeared. My ISP advised me to reset my router by plugging out the power cable and plugging it back in after 5min, and so I did. After that I could connect only from laptop. Tried to reinstall suse, to install ubuntu, but nothing worked. When I installed suse on my friend's computer, the only thing that I had to do is to open YaST and change the Network setup method from ifup to the NetworkManager, and also insert the MAC adress in the connection's properties. Tried that on my computer, but also didn't work.

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Ubuntu Servers :: Eth0 Disappeared / No Network Connection - Resolve That?

Aug 8, 2010

After rebooting, I found that the server couldn't see the network. The machine has dual gigabit ethernet (eth0 and eth1). eth0 is connected to the internet, but disappeared. ifconfig used to show eth0, eth1, and lo, but now only shows eth1 and lo. If I boot into rescue mode I can get internet and ifconfig returns eth0 and lo. Any ideas on how to fix this?
I apologize in advance if I ask any noob questions. I'm not a very experienced Linux user.

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OpenSUSE Network :: Eth1 Stops Accepting Connections Whenever There Is No SSH Connection Present On Eth0

Oct 2, 2010

I recently setup a new SUSE box for the purposes of acting as an ftp/sftp server. It's currently setup to run ProFTPD 1.3.3.rc3 and mod_sftp/0.9.7. The server has two internal network interfaces eth0 and eth1. eth0 is purely for internal use to accept ftp and ssh. eth1 is outward facing and receives connections from the WAN via SFTP over port 22. The problem I am facing is that after half hour to an hour eth1 stops accepting connections whenever there is no SSH connection present on eth0. I can't figure out why this is happening.

ProFTPD is setup as follows: SocketBindTight directive is on, default server and port are commented out.

[code]...

When the external interface is unreachable the proftpd and proftpd-sftp logs show no record of any connection attempt. I have noticed however if I leave eth0 down eth1 stays contactable without problem. Can anyone give me some pointers on what I can check to find out why this may be happening.

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Debian :: Network Manager App Showing No Connection

Nov 22, 2010

I was a ubuntu user for 3 years but all that 6 month release and reinstallations and bugs gave my nerves so I decided to turn to the real OS debian and hopefully stick to it. The only problem I have is that although wired internet connection is working the network manager app shows no connection and the wireless is also not working. I have an LG R500 laptop and never had the same issue with ubuntu before.

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General :: Stop And Restart Ethernet Connection Ubuntu 9.10 - Ignoring Unknown Interface Eth0=eth0

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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Ubuntu Networking :: Nm-connection-editor Eth0 Not Managed

Aug 25, 2010

I'm getting rather fed up with this Network Manager applet on Ubuntu and its seemingly erratic behavior.I often use my laptop for things like dhcp server to do pxe boot on other machines for netboot installs and other stuff. Often I have to set static address on eth0 etc.I know how to set a static address for eth0 by editing /etc/network/interfaces and all that good stuff, but when I click on the Network Manager applet, it says 'Wired Network - not managed'.I may have deleted it for some reason, but why does it no longer appear, even though eth0 is working?I've also found in the past that changes to interfaces in the Network Manager, such as giving eth0 a static address, do not seem to stick?

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Ubuntu Networking :: Disable 'internet' Connection On Eth0

Oct 15, 2010

I have two connections for my PC, my Ethernet which is on the corporate network and my smart phone on 'usb0'. Both have full internet access.I want to stop my PC from connecting to the internet over the Eth0 while still connecting to internal servers then just have internet over usb0.If I go to the settings of 'Auth Ethernet' in the tray area, under IPv4 there is the routings section - I've tried enabling "use this connection only for resources on its network" but it doesnt work.

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Ubuntu Networking :: Nm-connection-editor Eth0 Not Managed?

Apr 23, 2011

I'm getting rather fed up with this Network Manager applet on Ubuntu and its seemingly erratic behaviour. I often use my laptop for things like dhcp server to do pxe boot on other machines for netboot installs and other stuff. Often I have to set static address on eth0 etc. I know how to set a static address for eth0 by editing /etc/network/interfaces and all that good stuff, but when I click on the Network Manager applet, it says 'Wired Network - not managed'. I may have deleted it for some reason, but why does it no longer appear, even though eth0 is working? I've also found in the past that changes to interfaces in the Network Manager, such as giving eth0 a static address, do not seem to stick? It seems the only thing this applet is useful for is connecting to a wireless network.....and only with dhcp !!

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Networking :: Bridge Eth0 And Wlan0 Connection On Ubuntu 11.04?

Jul 23, 2011

just wondering if I could get a hand with bridging my eth0 and wlan0 connection. I'm using Ubuntu 11.04 if that helps at all.

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Ubuntu Networking :: Sharing Internet Connection From Ppp0 To Eth0?

Jan 23, 2010

i want to share the internet connection from Laptop to PC via LAN crossover cable
here's how i connect to the internet in laptop, and connected PC via LAN:

i need to share pppoe(ppp0) to (eth0) , that is what i've been doing in Windows before, but i dont know how to share in Linux, i tried to follow Ubuntu Help about ICS, but it doesn't work

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Networking :: Ubuntu 10.04.2 - Dhclient And NetworkManager - Eth0 Connection Lost

Feb 24, 2011

I'm running Ubuntu 10.04.2 LTS and from time to time eth0 connection is lost.

Looking at syslog (below), if its a hardware (network card) problem or a software bug?

syslog file:

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Fedora Networking :: Connection Eth0 Never Active On Boot

Jul 16, 2011

I am trying to sort out some issues following an upgrade from F12.

I have eth0 as the connection I want to use. Prior to the upgrade, this connection was enabled and active at boot.

Now, for some reason after the upgrade it has to be manually enabled at every boot - even though when I go the Network tool, Ethernet Device > General tab - "Activate device when computer starts" is checked.

At every boot time it is inactive.

In all the ifcft-eth0 files, the ONBOOT parameter is set to "yes".

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Fedora Networking :: Unable To Activate Eth0 Connection / Resolve This?

Jul 25, 2010

Code...

connection is set to connect automatically using dhcp... used to work, after a latest updates basically stopped working.

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Fedora Networking :: Eth0 Connection Failed - Device Not Managed By NetworkManager

Aug 10, 2010

Yesterday I did an upgrade and today my box is unable to connect to the internet.

I have tried another cable, it didn't help.

Basically NetworkManager does not connect eth0 to the network, if I try to run ifup from the command line I get:

Code:

I can see in network configuration settings, that the device has been correctly detected and eth0 interface is correctly activated, yet when I try to uncheck the box manage by NetworkManager and start it manually, it tells me that the cable is disconnected... I've tried two different cables, different ports on my router - no help.

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Ubuntu Networking :: Why Etc/network/interfaces Does Not Contain Eth0

Jan 1, 2011

So far as my knowledge goes, /etc/network/interfaces is supposed to contain a list of all the available interfaces. But my /etc/network/interfaces looks like this,auto loiface lo inet loopbackBut I have a perfectly working eth0 connection. Why does not it appear here?

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Ubuntu Networking :: SSH Over One Network Connection And Out To Internet On Another Network Connection

Jul 9, 2010

I need to setup an Ubuntu Server to handle backups over the network (probably rsync over ssh). That server will then transfer the backup data offsite over a secondary external data line.How can I configure the ethernet interfaces to handle such a scenario?

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Ubuntu Networking :: Wireless Connection Dropping Out But Still Showing It Is Still Connected?

Jan 20, 2010

as the titles states my wireless is dropping out but the networks manager is still saying i have a connection. the only way i have been able to be on the network every minute or so i have to manauly disconnect and reconnect to my wifi. under my windows 7 and vista installs the wireless card works fine now my card is a dlink dwa-547 and it uses the arthores chipset, it is encprtyed wifi, wpa2 aes on a n/g based network

Code:
peter@ubuntu:~$ sudo lshw -C network
*-network
description: Wireless interface
product: AR5008 Wireless Network Adapter

[Code]....

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Ubuntu Networking :: Wire Connection Not Showing In Panel Or Connecting?

May 15, 2011

My sons Ubuntu installation on his computer hasn't showed the Network Connections Icon in the Panel for a long time. This weekend everything was working fine and we needed to go away for the weekend and unhooked the router. When we came back the computer wouldn't connect back up to the internet.

How can I fix the Wired Connections Icon on the Panel and get the Auto Connect to work again?

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Networking :: Not Able To See Eth0 In Network Icon

Jan 23, 2011

I was browsing the net very well and without any issues for the past 15 days since I installed FC14. Fantastic experience and then suddenly yesterday after nearly 2 hours of a smooth online session I lost internet connectiivity.At that point I noticed that the network icon on top was showing a red cross. After clicking on it I could NOT eth0. I specifically remember seeing it there before.I checked the cables and the setting to no avail and just could not get it back. Any idea what I should be doing to see eth0 in the connection?Also FYI I have been noticing this from day one since I installed FC14----When going through administration-->network-->One cannot see the red and GREEN activate button that I am used to seeing in FC9. In fc14 its greyed out. So I actually had to go and enter the /etc/init.d/network start command to change the status from inactivate to activate.Also the network manager does not seem to be managing eth01 as it does not appear as an entry in its console.

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Ubuntu Networking :: Auto Eth0 - Network - Won't Connect ?

May 2, 2010

Upgraded To Ubuntu 10.04 The Other Day. And when I first installed it everything worked great except for my sound card which I fixed. But there was no problem with connecting to my Router via an Ethernet cable. Then I updated the video card drivers, restarted my PC and it wouldn't connect. It would try over around 1-2 mins then tell me its disconnected. No green light activity on the router / network card either.

I've reinstalled fresh copies of Ubuntu a couple of times now, Hoping to get the default settings back. But nothing has worked since.

I looked around the net and found quite a few people had this problem on previous versions of Ubuntu but it would seem most of there fixes were for there Version, so it hasn't helped me.

Heres some info:

ifconfig:

I've tried all the various things from dhclient to ifup/ifdown etc etc.

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Ubuntu Networking :: Eth0 Won't Enable - No Network Connectivity

Aug 24, 2010

Trying to get the wired nic working so I can troubleshoot the wireless. I cannot get any kind of network activity. Been searching so I will post a little information that seems to be common with my situation.

lshw -C network

reveals:

WARNING: you should run this program as super-user.
*-network DISABLED
description: Ethernet interface
product: 82562EZ 10/100 Ethernet Controller
vendor: Intel Corporation

[code]....

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Ubuntu Networking :: Eth0 Not Visible In Network Connections?

Jan 24, 2011

Since I installed ubuntu 10.04 I dont see my eth0 card in System->Preferences->Network _connections. Everything works fine but it puzzles me. In ifconfig iI just see the eth0, networking seems to be working fine, but it keeps puzzling me. Adding theinterface is no solution: add it and it doesnt show again

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Ubuntu Networking :: Auto Eth0 Connected But No Network

Jul 21, 2011

I am using BSNL broadband ISP and I am able to get network on windows os but not on my ubuntu.( I have a dual boot). I see Auto eth0 connected from the notification but when i am pinging [URL]... it says unknown host.

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Ubuntu Networking :: Change Network Card And Bring Eth0 Up

Mar 14, 2010

I run an Ubuntu Server in a Virtualbox environment. Setup works fine. In virtualbox, I accidentally hit a button that generates and assigns a new mac address for the network adapter. Since then the machine does not bring eth0 up. I tried the following ifconfig eth0 down; ifconfig eth0 hw ether macaddress; ifconfig eth0 up. Then restarted networking.

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