Ubuntu :: No Internet Connection Unless Run Command In Terminal - Sudo Dhclient Eth0
Feb 21, 2011
Running 10.04. For some reason, starting today, I have no internet connection unless I run this command in terminal - sudo dhclient eth0. I have a hard wired ethernet connection on a Desktop PC with a static IP address (there are a number of devices in the house) and it has been running 100% for months and months. Why suddenly do I have to enter this command to get connection? When I switch on I get a connection in that when I click on the Top Panel icon and right click Connection Information it tells me I have an active connection to my router on the normal IP address. I cannot ping the router and Firefox says Server not found. After sudo dhclient eth0 everything works - what has happened since yesterday evening and this morning to stop what has been 100% for months?
Latest FC12 update included dhclient-4.1.1-9.fc12 which fails to configure eth0 after restarting the computer. Had to remove/downgrade to 4.1.0* (and reinstall dracut and NetworkManager(-glib)). There is no config file in /etc/dhcp/dhclient.d so I don't know how to reset dhcp/eth0 to connect. Thought some one smarter than me might have noticed this by now and worked out a solution. Can't tell that anything in Bugzilla sounds like my problem. Might only be x86_64 or KDE-4.4 problem as my 32-bit Gnome install is not affected. Easy enough to grab the rpms, just annoying. Still haven't learned how to keep a package at version x.x with Fedora yet but that's another topic.
While i am configuring network setting on backtrack4. i was running my backtrack on vmware workstation and NAT is bridged to physical mem like it was said on the tutorial that watched. i typed ifconfig eth0 up, and hit enter, as well as dhclient eth0 up, but resulted in different output. it says "no such device" is written and i would like to configre this problem.
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?
Ubuntu won't let me use the sudo command in terminal. If I try, sudo: must be setuid root pops up. Also, if I try any tasks that require permission, the authentication box pops up and then disappears within one second.
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.
explain the difference between these two commands. I'm currently reading about changing your mac address and both of these commands show up a lot. They sound like the same thing to me. Is one better than the other, or do you need to use both to change your mac address?
Code: sudo ifconfig eth0 down sudo /etc/init.d/networking stop
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
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?
Any hints why I'm getting the following message: dhclient: Internet Systems Consortium DHCP Client 4.1.1-P1 dhclient: Copyright 2004-2010 Internet Systems Consortium. dhclient: All rights reserved.
when i try to install gimp with the terminal command:sudo apt-get install gimpI get this Error(yes its in german i know):Die folgenden Pakete haben unerflte Abhngigkeiten: gimp : Hgt ab von: libpoppler-glib4 (>= 0.12) ist aber nicht installierbarE: Beschdigte Paketeit says, that the packet: libpoppler-glib4 is corrupt.i already tried to reinstall libpoppler-glib4, but it wouldnt let me
Whenever I try to use the sudo command in the terminal I get the message unable to resolve host, then my computer name. Here's some command line output with some files which I think may be causing the problem. I have Operating Systems homework and need sudo
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?
I also issued the command sudo iwlist ttyUSB0 scan it gives this as output ttyUSB0 does not support scanning
I also issued the command sudo iwconfig ttyUSB0 essid "MTN DEFAULT" iT GIVES THE OUTPUT Error for wireless request "Set ESSID" (8B1A) SET failed on device ttyUSB): no such device
How can one find out the essid value of a broandband network? How can i connect to the internet from command line for a broadband network?
My Internet connection works.Using no VPN connection, I can access the Tnternet from the gnome-terminal (ping, apt-get, lynx), as well as from any GUI application.As soon as I establish a VPN connection via openconnect, GUI applications such as firefox, transmission and thunderbird still work.But terminal applications (such as mutt, apt-get etc), some daemons (like mpdscribble) and some GUI applications (such as the easytag cddb search) don't work anymore.
My network configuration is in a weird situation, that I always need to run dhclient manually each time after a network connection is established. When my computer connects to a router, sometimes it won't get a valid IP, and it uses an automatically generated fake Internet IP. In this situation, it won't connect to the Internet at all. Sometimes it get a valid local network IP, but still cannot connect to WAN, and could only connect to my router's address (both through ping and through router's management webpage). In both situation, it can be solved by a simple dhclient run.
This is my /etc/network/interfaces file:
Code: Select all# This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5).
# The loopback network interface auto lo iface lo inet loopback
If I plug my iPhone into my laptop via USB cable, the phone gets mounted but no tethering connection is automatically made.I can manually configure ubuntu to tether with my iphone to use it's internet connection like this:
Code: sudo ifconfig wwan0 up sudo dhclient Does anyone know how to make internet connection tethering happen automatically?
I have just installed Debian Squeeze on my spare computer (dual booted with Ubuntu 11.04) and I cannot connect to the internet using Squeeze. Due to my ISP, I have to manually connect this computer and on Ubuntu copying and pasting a text file such as this into the terminal works with no problems.What do I need to do to manually configure my Squeeze internet connection?
I have a dynamic Internet connection. My eth0 is configured to DHCP client. I need to rum one personalized command all time the dhclient renew the lease. I have a program that update the /etc/hosts with the new IP and I need to run this command when dhclient receive one lease update.
I am a Mac/ Windows user, forced to use Linux for my college work. I do not know where to enter commands like $ sudo /usr/etc/eth0 mvntz -do4i or how to make them work
I had a problem - the Wi-fi card in my laptop was not working. All the forums were useless. They wanted me to READ about wireless networking !
Finally a good friend solved the problem in a simple way : it appears Ubuntu has not installed the drivers for my Broadcom wireless card since it was not open source. I had to download it myself. Here is how : Go to System menu on the top bar. Choose administration/ hardware devices. Tell it to activate the device. It will download the drivers through the cable attached to DSL modem and install.
Then clicked the network icon, selected edit connections, and entered my wireless network name and password. This solved all problems.
Why doesn't Linux give me a warning that the driver for something is not yet installed ? When I was struggling with the network setup wizard for the whole day, there was no clue about the missing driver.
ifconfig dsl up ifconfig up dsl ip link set dsl up
But I think I should have typed:
Quote:
ifconfig ppp0 up
Yesterday I was lost, I updated the drivers for the nvidia card and that broke X, since my internet is not up and running when booted I was wandering how to call it from the command line since that was the only thing I could see.
is there any way to do a 11.04 Alternate Command Line Install without Internet Connection? I try to install Ubuntu on a Internet-Tablet, wich has no Ethernet-Port and I don't know how to get Wifi to work during Alternate-Install. At previous Ubuntu versions it was possible to let network be unconfigured and install completely from CD or USB-Stick. Isn't this possible in current versions?
I am new to fedora (been using debian based distro's for the longest time). With the new release I decided to give FC13 (The kde 64 bit spin) a try. I told it to wipe my entire hdd and encrypt the partitions. The partition manager made a few LVM partitions which I assume are encrypted.
The problem I am having is that if I attempt to use an application that would normally need root access to run, I am not prompted to enter my root password. Instead, I am required to logout and log back in as root. Is there a way to make it so that FC13 will prompt me to enter in my root password so I do not need to log in and out? Or is there something Different I should have done during the install process? Also, what is the terminal equivalent of "sudo" in fedora, or is it still sudo/KDEsudo
I also have not used SE Linux before. Do I need to manually enforce the permissions for my applications and generate my own profiles for it, or is that done automatically?
I am running Ubuntu 10.10, and I would like to use my computer to share the internet connection from an ethernet port. For example, I would like to set up my computer as a wireless access point so I can create a network that other computers can connect to for internet.
I am having trouble running commands by using sudo. I configured visudo file with localuser ALL=(ALL) ALL but I can't run any command, it tells me command not found.
