When I run cat /etc/network/interfaces in Ubuntu 11.04 I get the below output.
auto lo
iface lo inet loopback
I don't see the eth0 or eth1 interfaces, but I am able to see them in the Network Tools application. How do I configure the eth0 and eth1 from command line?
If I try to add a new interface (eth1) to /etc/network/interfaces, I get
Code:
* Reconfiguring network interfaces... SIOCSIFADDR: No such device
eth1: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
[Code]...
How do I add 2 interfaces and get anyone of them to work, as available ?
I am using wvdial to connect to a mobile network (I have a usb modem) and it works fine. However, I wanted to automate the connection a bit (currently I am running wvdial every time I want to connect). I was wandering if there is a way to add this network to /etc/network/interfaces (in a truly Debian way) to have it connect on startup and/or whenever I connect my modem.
View 1 Replies View RelatedI'm often on my corporate network but also need to be on another network simultaneously. At the moment I have to manually switch back and forth between the two. I'm using ubuntu 10.04. I've come across an excellent document that explains how to do this: "Linux Advanced Routing & Traffic Control HOWTO" by Bart Hubert. He mentions:
make sure that your kernel is compiled with the "IP: advanced router" and "IP: policy routing" features
I've downloaded the kernel sources, but I don't find any config options with names like these in them.
sudo apt-get build-dep --no-install-recommends linux-image-$(uname -r)
sudo apt-get source linux-image-$(uname -r)
Searching doesn't reveal anything
~/kernelBuild/linux-2.6.35/debian.master$ grep -iR policy . | grep -i routing
~/kernelBuild/linux-2.6.35/debian.master$
So my question is...how can I tell if the kernel I have has these config options. Failing that, how do I build a kernel that does support these things?
Additional use cases for this knowledge. (1) At work with desktop computer plugged into corporate network. Plug 3g phone into USB port. My corporate network wont allow me to access my external servers over ssh, but the 3g phone will. (2) At home on the corporate VPN, but would like to access my other local network computers.
Is it possible to route different applications through different network interfaces?
Let's say (hypothetically) I want to route /usr/bin/thunderbird through vlan0 but /usr/bin/firefox through eth0.
Is there a way? And if so, is there a graphical tool for it as well?
I have two physical NICs (eth2 & eth3) with eth2 connecting to the home router/dhcp server and eth3 connecting to another machine which needs access to the internet. I'm trying to create a bridge so that the second machine on eth3 can be connected on the lan. I've tried the following, however it hangs when attempting to get an IP address from the router. Likewise, attempting to give it a static route doesn't seem to work either.
$ sudo aptitude install bridge-utils
$ sudo ifconfig eth2 down
$ sudo ifconfig eth3 down
$ sudo brctl addbr br0
$ sudo brctl addif br0 eth2 eth3
$ sudo dhclient br0 # this hangs and fails to get a dhcp address
I've tried to ensure my routing table mimics what it looks like when using eth2 normally, I cannot hit the gateway at all.
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 2 0 0 br0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 br0
I attempted an 'arping' to the MAC address of the router while I had eth2/3 bridged, but it failed to obtain it's IP address as well. One interesting thing I noticed was that attempting to bring down the bridge & reactivate my internet on eth2, I was having trouble pinging the gateway. It turned out 'ipmasq' had been installed and was running causing odd problems. When I stopped the ipmasq service, my internet started working properly again. I removed the 'ipmasq' package entirely and tried bridging the NICs again thinking it may have been causing problems, but it still failed.
I want to get a list of all available Network-Device Names on my Linux server. I figured that
netstat -a
would do the job, however netstat produces quite much output:
eth0 Link encap:Ethernet Hardware Adresse 08:00:27:fc:5c:98
inet Adresse:192.168.2.222 Bcast:192.168.2.255 Maske:255.255.255.0
inet6-Adresse: fe80::a00:27ff:fefc:5c98/64 Gültigkeitsbereich:Verbindung
UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1
[Code]....
I assume that this can be done by a combination of "cat", "sed" and "grep", but I have simply no clue of how to strip the uneccessary information.
In Ubuntu 9.10 I configured manually network settings to /etc/network/interfaces, and it works fine when I run /etc/init.d/networking restart.
Problem is that those settings are not loaded to GUI application (Preferences/Network connections).
I don't want to edit my preferences there, I just want to use my interfaces file as default! Do you know what's going on?
I can't open etc/network/interfaces file comes some permission denied. What can I do?
View 2 Replies View RelatedUsing Fedora 10, can anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
View 2 Replies View RelatedI've not found how to configure more than one ip address with network manager.Nor with kde nor with plasmoid network manager.I need several virtual ip addresses for eth0 when the "default" of eth0 is connected i.e. "Connected to Auto eth0" should initialize the virtual interfaces.I have not found no even how to configure the ip address.I think this will be used from ifup config in yast or not?There I have the virtual interfaces but they are not taken from network manager.And last but no least: Is it possible that when using network manager the eth0 is enabled even no user has logged in?
View 4 Replies View RelatedCan anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
View 4 Replies View RelatedOn my desktop having a NIC 3Com, connected to the company intranet and correctly working, I have added a second NIC ( Realtek RTL-8139) to connect a second small network ( three devices, instrumentation) using static addressing.The new board seems to be rekognized by Ubuntu, indicating "auto eth1" in the Network connections dialog. When I try to configure the connection, the "Apply" button is always disabled, therefore I cannot activate it. The command lspci shows that the board has been recognized but when i sent the
lshw -c network
the response is:
*-network:0 DISABLED
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
[code]...
I am trying to set the interfaces file to connect to my wireless network. Here is my interfaces file...
Code: auto lo
iface lo inet loopback
auto wlan0
iface wlan0 inet static
[Code]....
I have a weird problem with my /etc/network/interfaces configuration. I have the most simple static setup possible: Code: # cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
[code]....
I have a weird issue that I have not seen on any forum. My jaunty on DELL studio laptop seems connected to net, but I can not access any network service (ssh, firefox etc.). But when I connect a cable the cable lights blink as it should be and in wireless connection my wifi light blinks.
It was working 2 days ago without problem, and I have not done big changes recently.I removed and reinstalled network-manager and network-manager-gnome. Nothing changed. I see a message in each restart as follows (when Openafs is starting). I can reproduce it with "/etc/init.d/openafs-client restart"
Code:
ADVISEADDR:error in specifying interfaces: no existing ip interfaces found
#lspci
Code:
04:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
08:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
#lshw -c network
[code].....
I am currently trying to set up two network interfaces in my laptop. The wireless connection wlan0 works fine and it's the one that I use to connect the internet. It's in the range of 192.168.0.x/24 (gateway: 192.168.0.1). The wired interface eth0 is connect to another router (gateway: 10.0.0.13 with IPs in the range of 10.0.0.x/24. The router is set up to work as an AP and the 10.0.0.x network will only be used to control a robot, so no internet access will be required in this network. The problem is that when I have both connections up, I can't access the Internet anymore. I can still ping both routers, I can enter both routers configuration pages but I can't connect to the Internet. If I unplug the network cable, Internet gets accessible again.
I'm still a novice in linux and I can't figure out how to fix this. I don't want to get into static ip for the wireless connection since I'm constantly using the laptop in different places. The objective is to use the 10.0.0.x router to have a development platform for the robot that can be used anywhere without having to reconfigure the robot for a new network, which is a real pain.
In detail, the laptop connects via wireless to the network with intenet (192.168.0.x) and also connects via cable to another wireless router(10.0.0.x). The wireless connection of the second router is used to connect to the robot. Since I can ping both routers when they're both connected, I think it may be something related to the ip routes. I'm using Ubuntu 9.10 with kernel 2.6.31-17-generic
[Code]....
i edit this file... Code: /etc/network/interfaces now it looks like that
Code: auto eth0 iface eth0 inet dhcp after the change I cant enter to local host with the browser and unable to log to PHPMYADMIN what i need to change to solve it?
I'm trying to configure /etc/network/interfaces to log whenever an interfaces goes up or down into a file, using this format: UP/DOWN [DD-MM-YY/HH:MM:SS]
How exactly do I use commands with the UP and DOWN directives?
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?
View 9 Replies View RelatedI have been trying to set up Ubuntu server 10.04-2 and am a couple issues.
One issue is that the network interfaces aren't starting properly. I have to start them manually. I've tried to edit the /etc/network/interfaces with the following.
Code:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
[Code]....
I accidentally killed the dhclient processes. I am unable to access the Internet wirelessly or with Ethernet. It's a little irritating because now I have to post this using my phone. I'm looking for a way to reformat the network files to how they looked when I first installed ubuntu. I don't know quite what these are, or really anything about it.
The /etc/network/interfaces file has the following information:
I'm pretty sure there's supposed to be more.
iwconfig typed into the terminal gives me this:
According to lshw, the logical name for my Ethernet interface is eth1. I think it used to be eth0. It's an 88E8055 PCI-E Gigabit Ethernet Controller.
The wireless interface has logical name wlan1. I think this used to be wlan0. It's a PRO/Wireless 3945ABG [Golan] Network Connection. The driver is iwl3945 - [phy0]
I'm trying to configure OpenSuSE 11.2 with Open vSwitch, and I'm having trouble getting various interfaces to come up automatically when I have bootmode set to "none." startmode is set to auto (or on - tried both), and bootmode set to none, with no IP address assigned in the file. At boot time, I get the message that it's bringing up eth0, for example, but when I log in and check, the interface is not up. Also, if I try "ifup eth0", I get the following output:
xen-users:~ # ifup eth0
eth0 device: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02)
but the interface is not brought up. why SuSE is saying that it's bringing up the interface successfully, but is actually not bringing it up?
DSL modem is a Speedstream 6520 router. All computers work fine via dhcp. I'm trying to setup a small server (print server, ssh & ftp servers). I understand enough of the software part of things to get it going, my problem is setting a static IP on the server box. Every time I set the IP in the /etc/network/interfaces file and reboot, I have no network connection. I can talk to the modem through the browser, but nothing beyond that, not even local computers.
/etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.254.202
network 192.168.254.0
netmask 255.255.255.0
gateway 192.168.254.254
ifconfig shows the .202 address, but box can't get to the outside world, and can't ssh into the box from a computer sitting next to it. If I let it dhcp, then I can ssh into it, and have access to the internet. In the modem, I have dmz set for that address. Wan address is static. I can ssh into it if I let it do dhcp, so I know it can work that far. But if I set static ip, I might as well pull the network cable. I've been beating my head on this for over a week, and I'm lost why I can't get it to work. I even changed the dhcp range on the modem, so the .202 is not in that range. There is no dhcp client installed that I can find. I'm using WattOS beta3, which is a light distro based on 9.04. The computer is an old Dell GX150, integrated nic. I have done ifdown and ifup eth0, still no happiness. Doesn't seem like it should be that hard, but I'm stumped. DMZ should let everything pass, so don't need to mess with port forwarding and such. I know it works using dhcp.
I am trying to preseed the UBUNTU 9.04 x86 installer and everything else is okay except that for some systems, it says "No Network Interfaces found" with options as "Continue" and "Go Back". My network interface detection is set to "auto" in my preseed file. I want to remove this popup. Can someone please help with the correct line in preseed.cfg?
View 1 Replies View RelatedI am using vnuml to test a network project. I have one Ethernet card on my ubuntu 9.10( eth0) with network 10.1.0.0/16, and creating a tap0 with subnet 10.4.0.0/16. Now the problem is how to work them together, such that packets from one interface goes to other one?
View 2 Replies View RelatedWhen I boot into Ubuntu with the Xfce desktop then proceed to terminal to check my IP it is always some random IP as provided via DHCP by the router. If I then go to the cmdline and type sudo /etc/init.d/networking restart then the wifi correctly connects to the router to the one static network address that I have specifically provided for it - as stated in my interfaces file. Why is this not happening on startup?
View 2 Replies View RelatedI have a problem where multiple interfaces in my network manager have the same name. This means that I am unable to have different settings for each interface. Here is my setup:
Ubuntu 10.04 LTS
uname -a: Linux muon 2.6.32-30-generic #59-Ubuntu SMP Tue Mar 1 21:30:21 UTC 2011 i686 GNU/Linux
Adapter 1: 02:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet Controller (Copper) (rev 03)
Adapter 2: HTC Desire tethered via USB. When I start from scratch, with no remembered networks in the network manager, the Ethernet is shown as "Auto Ethernet". When I then connect the HTC Desire, the new network is shown in the network manager also as "Auto Ethernet". Previously, when I right clicked on the network manager and selected "Edit Connections", there were multiple "Auto Ethernet" entries under the wired tab.
Now (and I do not know what changed, sorry), I only see one entry. When I edit this entry (say, add a route), then the route is added for both network interfaces. This used to still work, so I was not worried about the name clash, but now it is causing problems so I need to have a different name for each network interface.
So I've always asked this in the past when I get on a Debian system. This makes no sense to me but I just don't see how I restart network interfaces (i.e. eth0) on a standard Debian install. If I change the static I.P. address listed in /etc/network/interfaces from x.x.x.100 to x.x.x.101, I then assume I can simply do any of the following:
- /etc/init.d/networking stop | start
- ifdown eth0
- ifup eth0
- service networking stop
- service networking start
All the commands above do nothing. My only solution I know that works and implements the changes I've made is a complete system reboot which to me in Linux, is ridiculous. I've struggled with this over and over and nothing I do correctly assigns the new I.P. in the 'interfaces' file to the actual adapter. This isn't my single isolated Debian machine but every Debian machine I can get my hands on. Servers, workstations, VM's, any release, etc etc etc. Below is my interfaces configuration file:
Code:
auto lo
iface lo inet loopback
[code]...
I have installed Debian 5 and dident configure the network interfaces at installation.Now i am not able to connect to the internet through Ethernet or Wireless. How do i configure the interfaces after installation ?PS. the interfaces show up as "Not configured" in the network manager
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