Ubuntu Networking :: Eth0 Not Working After Rebooting?
Sep 5, 2010
I'm not sure what's going on, but I have two computers that both aren't working after I reboot them. When I boot up the machine and do ifconfig, eth0 is missing.If I issue $sudo ifup eth0 then the ethernet is working, but I'm not sure why I'm booting up without a connection. Even after $sudo ifup eth0The networking app that's in the taskbar is missing.looked at dmesg and it looks normal$dmesg | grep -i ethmy interfaces fileiface eth0 inet staticaddress 192.168.15.146netmask 255.255.255.0gateway 192.168.15.1
i installed and ran System Profiler & Benchmark ran a test. then i rebooted and turned off ACPI/PowerNow. at this point i realized my network card had gone down so i went back an turned the ACPI on. nothing changed.
I have installed RHEL-5 (2.6.18-53) on my Desktop (ASUS Motherboard with Realtek PCIe GBE Family Controler 8168). After installation eth0 is not detecting. I downloaded R8168 drivers from Relatek site, but I am unable to install as it's throwing the following error.
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.
I'm using Easytether through my HTC Droid for interwebs running Ubuntu 10.04. However I also have a home network. However when I hardwire into the network via a D-Link router (Auto eth0) my internet no longer works. The same is true when I plug in my iPod. The Droid loses it's connection. What is the problem?
I am trying to get a network bridge configured but every time I make the changes and restart networking (or reboot) eth0 appears to come up OK but I can no longer talk to the outside world via it. With no bridge defined, I can talk to the web using either wireless or wired; wicd is configured to switch to a wired connection when available (got rid of Network Manager. It didn't recognise eth0(!)).
I want to use the bridge so virtual machines (LXC containers) can talk to the web when the machine is wired to the wireless router. Eth0 gets its IP address (192.168.1.4) via DHCP from the router and I want to bridge to another subnet, 192.168.154.n say, and the containers will have fixed IP addresses 192.168.154.101, 102, 103 etc.
I've got a 64 bit home server system that was upgraded from FC2 to 7, 9, now 11. I've now got a weird situation where dns inquiries will not work when I reboot the machine, until i restart eth0. When I reboot, I can open firefox on the machine, put in the IP of my dsl router, and look at it's settings just fine. All other internet uses, whether it's yum,squid, or etc. comes back with the usual name server not found messages. I've got thenetwork setup to use the named on this server, ( the web's a tad bit slower when I set it up to use ISP's windows nameservers, go figure).
Anyway, a few years ago I set up the machine to use the network service to bring theseinterfaces up. (I believe this was because the early versions on Networkmanger had some issues. In an attempt to fix this issue I reset Networkmanger start at startup, and reset up eth0 and 1 to be controlled by it.I then got namserver1=XXX.XXX.XXX.XXX in resolve.conf at reboot..(yeah they were really X's, I'm not hiding an ip here) I tried going intonsswitch.conf, found the line hosts: files mdns4_minimal [NOTFOUND=return] dnsand changed it to:hosts:files dns mdns4_minimal [NOTFOUND=return]No joy, I still have to do an ifdown eth0 and an ifup eth0 to get dns to work..
Ok, so eth0 is up and working great. eth1, however, comes up with a link light, however the packet counters in ifconfig remain at 0. Appears that eth1 isn't working.
Here's my setup:
-Dell latitude CPi laptop with 2 PCMCIA network cards and no built-in ethernet. -Slackware v11 -eth0 is connected inside my router on my 192 network. Static address with good connectivity -eth1 is connected on the other side of my router in promiscuous mode in order to listen to the traffic coming into my network.
Troubleshooting so far: I have switched the pcmcia cards between slots and regardless of which card is in eth0 or eth1, eth0 works and eth1 does not. I have also switched the card dongle between cards as well as the ethernet cabling between the cards. With any of the combinations eth0 works like a champ but eth1 does not, so I think I've ruled out hardware problems.
my eth0 suddenly stopped working on FC10. i have been using it the whole time, and now it refuses to even ping the gateway. dhclient is not receiving a dhcp offer and when i put in the information manually, it is not even able to ping the gateway. netstat -rn shows that the destination of the router is going nowhere.
i do not think it is the hardware/software, but rather maybe the provider? i am from central europe but just moved up to great britain and working at a friends place. i can connect the mac powerbook without a problem (it will get an ip with dhcp), but not the linux machine.it is a normal ethernet modem connection here. can it be, that it checks MAC addresses or even the computer names? the powerbook also has a really weired IP address: 77.102.xxxxx
i am not using network manager, but command line tools and have nm uninstalled. does anyone have a clue, what this could be about? i am not a newbie, but this is really puzzling me.....
5.10 Breezy configured as machine controller. Works great eth0 is a fixed IP to communicate with controller comms board. Not easy at all to alter - the comms board is hard coded to listen on eth0 for commands.
I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.
Code: echo !HH | nc 192.168.1.6 80
I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?
I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.
My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...
The G5 eth0 - Public IP - full LAMP services on two or three virtual interfaces eth1 - Private IP 192.168.0.1 The G4 eth0 - Public IP for ssh eth1 - Private IP 192.168.0.2
Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...
I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).
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.
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
I have noticed that ubuntu 9.10 (but also other distro and in general those that configure the network automatically at startup) crashed if my pc boot directly with a linux kernel at power on.This does not happen if the first boot is done with windows xp and then rebooting the pc and choosing the same linux kernel.Some distro (for example SysrescueCD) that does not configure the network at startup can work but also with these if I try to configure the network using the command ifconfig eth0 the system crashes.My network card is a SiS191 Ethernet and linux recognized it using sis190 module.I suppose that something happen during the first power on, some inizialization done with windows xp but does not done with linux in fact after a reboot made from windows xp without shutdown the pc, with Linux I can configure the network using ifconfig without crash. Any ideas to solve this without have to boot always windows as first?
i can't access to localhost with firefox although yesterday I could installing XAMPP successfully and access to localhost. Now when i enter to file:///opt/lampp/htdocs/index.php this message is shown :"Something is wrong with the XAMPP installation
I recently installed Ubuntu 10.04 on an older PC and I'm having problems with the network card built into the motherboard. When I connect an ethernet cable into the ethernet port I get a solid amber light, and I can't connect to my router, (which is being directly connected). Nothing is shown in Network Connections, but on another PC with the same version of Ubuntu it shows "Auto eth0", and it works just fine connecting with the router.How do I fix this? I'm an Ubuntu noob so I'm not really sure what to do here.
The network card is an Intel 82547EI Gigabit LAN controller, and Intel's website offered a driver available for my kernel version of Linux. However I was typing everything it told me to do in terminal, (which half the time I have no clue what I'm typing actually means), but I ended up getting some errors towards the end of the install process. I'm not sure if I messed something up or the driver just isn't going to work.
I'm hoping there is an easier fix for this, I've been searching the net all night trying to find someone with a similar problem and I haven't found any. I think I have another ethernet card which I might pop in and see if that works....but I figure I'll most likely run into the same problem because I know for sure the motherboards network card works - has on Windows, I just can't get it working in Ubuntu.
I have a DELL Vostro 1500 and I have Debian Lenny running on it. I did get the wireless card BCM4312 working but after doing apt-get update followed by apt-get upgrade and after rebooting it stopped working. I am including the output from iwconfig, ifconfig and lsmod. raygo75@RayGo-d3:~$ sudo ifconfig eth1
[sudo] password for raygo75: eth1 Link encap:Ethernet HWaddr 00:16:44:9b:e9:cc inet6 addr: fe80::216:44ff:fe9b:e9cc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:17 Base address:0xc000
I think I will mentions that I got the wireless card working after following the instructions at [URL]
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-184.108.40.206-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
I try to generate a server client code. What i try to do is sending video streams from eth0 and eth1 to the other server programs' eth0 and eth1. In order to do that, i decided to use SO_BINDTODEVICE. But the code is not working. Am i misunderstood the usage of SO_BINDTODEVICE.
1-Defining two ports 2-Defining two sockets 3-Assigning host ips on them
WiFi worked PERFECT in 9.10 after Code: Sudo apt-get update apt-get upgrade But that only worked when I put in my eth0 cable to get the Updates. Now I upgraded to 10.04 LTS and it isn't working- eth0/wifi. So Now what do I do if i can't even get the updates in Terminal?
I have a hardware device with two ethernet ports, eth0 and eth1 running Centos 5. Basically my goal is to forward packets from eth0->eth1 and eth1->eth0 as well as get a copy of these packets for analysis. If I set IP routing to do the forwarding then I won't get a copy of the packets for analysis.
Some time throughout the night last night eth0 stopped working entirely, I could not resolve dns or any thing. Oddly though eth0:1 and eth0:2 worked perfectly with a ping -c 10 -I eth0:2 xxx.xxx.xxx.xxx but still could not resolve domain names. My nameservers are good as i have tested them on my other machine. My setup had been working fine for quitte some time and i did not make any changes besides updating webpages, it is a server running Debian Lenny. Unfortunatly since eth0:1 was working for the most part i was trying to change the IP's in the config and accidentally killed the settings using webmin so I cant post to many details at the moment until my host for the dedicated gets my /etc/network/interfaces restored but in the meantime i have searched all over google to try to find an answer to the original problem but cannot so i would like to prepared for when the server is accessible again.
I have a redhat server with SAMBA file services. I have copied all the users files into their respective home directories and mapped a network drive to their folders. However, when I try to access a file in those folders the machine reboots itself. There are no error messages or anything, it just reboots!
I installed F13 on an Acer laptop for a friend who is just beginning with Linux. This laptop has the dreaded Broadcom chipset and is using the b43 driver. When it was first installed, wireless was automatically detected and worked fine. However, as usual, there was about 200MB of updates after the install, and the wireless was downloading extremely slowly, so I connected eth0 just to complete the updates. Ever since, the wireless will not work. When the machine is booted, wireless is shown as disabled in Network Manager. I remembered that there was a wireless switch on the front of the laptop and switching it on allows me to check the enable wireless box, but wireless says device not ready.
ifconfig wlan0 up returns:
SIOCSFFLAGS: Operation not possible due to RF-kill
I assumed this meant that the switch was in OFF position, but it is not. iwconfig shows the wireless is detected. It appears that there is a script for rf_kill somewhere in the filesystem that is keeping this from working.
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
Ignoring unknown interface eth0=eth0.
ifconfig tells me
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
so I am at a loss. How do I stop and restart the network interface short of rebooting the machine?
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 :/
* 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
I got two IP's in my dedicated server. Both are external IP's. I would like to make connections using 2nd IP address under eth0:0 interface. For example: when using "lynx whatismyip.com" should display my 2nd IP. How to do this using iptables ?
I've had 11.4/KDE working pretty well on dual boot Asus G73SW for a few weeks now. Only issues were the FN-* functions that control keyboard lights and whatnot but no biggie since the essential worked.The last couple of days the update notification was indicating 1,201 updates to be made. Yeah it seemed extreme but I googled around and checked the forums and there was nothing related. I figured I might be missing some packages since I installed from the live KDE CD (still 1202 updates!!!???). So I updated. Big mistake!!!!! Ever since NetworkManager cannot connect to the internet, be it wired or wireless.
Initially it could not even see my home network but it picked it up after I removed the plasmoid from the panel and reinstalled it. However it doesn't respond when I click the network icon and still no connection.I managed to get eth0 working with ifup but not wifi. The last part of network manager log file is quoted below. I can send the whole thing to whoever is interested. I can't make sense of it but maybe someone on the forums can.