Debian :: Still Can't Reload Network Interfaces?
Mar 24, 2011
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]...
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Apr 16, 2010
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 ?
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Mar 30, 2010
I had one of those random system deaths, so reinstalled squeeze (daily netinst image I think...) on my eee 1000, which uses an rt2860 wireless chip. The new install only installed 2.6.32, which I had been avoiding using because of a few problems, including it dealing with networking slightly differently. I couldn't get it to work - even without encryption - using wicd. Having had a read of [URL]... , I had a look at /etc/network/interfaces, which read; This file describes the network interfaces available on your system and how to activate them. For more information, see interfaces(5).
[code]...
ra0 is now called wlan0, as far as I'm aware. I've read in several places that it is best to expunge this file of all references to wifi, so I removed the bottom section (after '# The primary network interface'). I still got nothing. However, if I go ahead and change the 'ra0's to 'wlan0's, it seems to work - wicd connects. Not very familiar with Debian (spent more time on SUSE. Drop your tomatoes - I like it. Any idea what is happening? Is what I'm doing wrong? Conversely, is the file wrong? Should it be reported? Against which package? Including any particular files?
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Jun 16, 2010
I have a netgear wg111t that is running with ndiswrapper. It has an atheros chipset, but calling it ath0 didn't work.
Heres /etc/network/interface :
# 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
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Mar 29, 2010
I have a rather urgent problem with my network, I got two virtual network interfaces one internal and one external. The problem is; I can't get connection to internet. The external NIC is set as a NAT and the internal is... internal.
/etc/network/interfaces
auto eth1
iface eth1 inet static
address 192.168.1.200
netmask 255.255.255.0
Running with this configuration makes my internet connect go away, however if I remove the configuration for eth1 everything is working fine.
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Jan 10, 2011
I was just wondering if there's any point having both auto and allow-hotplug against the same interface in network/interfaces as allow-hotplug seems to bring an interface up at boot on its own.
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Jun 27, 2011
I have a Dell PowerEdge SC430, Squeeze 6.0.2 box, Broadcom NetXtreme NIC which works fine DHCP. The network-manager package is not installed. I have now reconfigured /etc/network/interfaces for a static IP:
auto eth0
iface eth0 inet static
address 192.168.1.2
[code]....
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Jun 15, 2010
How do Linux identify the eth0, eth1, eth2 interfaces. For instance I plug in a network cable in to an interface. How do Linux recognize the plug in interface is eth0 or eth1?
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Feb 11, 2010
What is the maximum number of virtual network interfaces possible?I would like to create around 300 or so. This is needed to simulate a 300 node network.
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Dec 20, 2010
Alright, every time I boot or shutdown my routing box, it hangs at configuring and deconfiguring network interfaces. Below is my interfaces file. I see no errors or warnings in my log and I am running a pure kernel, not tainted with proprietary drivers. All of my hardware is 100% supported.
[code]...
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Jan 6, 2016
As above, my wheezy 32bit hangs at boot. the last few lines displayed are
Code: Select allMounting local filesystems...done.
Activating swapfile swap...done.
Cleaning up temporary files...
Setting kernel variables ...done.
Setting up resolvconf...done.
Configuring network interfaces...
[Code] ....
I removed the files from /etc/network/interfaces.d/ just in case. i still can't boot up.
Resolved (I think) as on this post: [URL] ....
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Aug 14, 2011
i recently started sockets programming. In the process i began to look for relevant network information about my computer and realized that ifconfig wasn't displaying the same information that resides in my /etc/network/interfaces file. On the interfaces file my IP address is 192.168.1.109 for interface eth0 but ifconfig displays 192.168.1.101. I was under the impression that ifconfig got its information from the interfaces file but clearly doesn't. I tried re configuring the device with ifconfig and then disabling and re enabling the device with ifdown and ifup so that the device updated its information but it didn't.
[Code]....
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Nov 30, 2010
We have ubuntu server and bind9 installed and setup.When I issue rndc reload or /etc/init.d/bind9 reload I got this:rndc: connection to remote host closedThis may indicate that* the remote server is using an older version of the command protocol,* this host is not authorized to connect,* the clocks are not syncronized, or* the key is invalid.If I issue named-checkconf /etc/bind/named.conf I got this:/etc/bind/named.conf.local:165: unknown key 'rndc-key'I got the key files in the right location but I'm not sure if we even need to use them.
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Apr 7, 2009
Using 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.
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Jun 7, 2011
I'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?
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Apr 7, 2009
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.
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Jan 19, 2016
After recovery from a disk crash, everything seems fine except that I have lost plasma. I have a backup. Is there a way to reload plasma from the backup? I can recover kde by reloading /home/.kde from the backup. But there is no .plasma file.
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Apr 19, 2010
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?
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Dec 23, 2010
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.
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Sep 9, 2011
I'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.
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Sep 9, 2011
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?
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Feb 26, 2010
On 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]...
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Apr 25, 2010
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]....
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Oct 23, 2010
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]....
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Sep 29, 2010
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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Feb 3, 2010
how do i combine these two lines to output all network interfaces on my machine?
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Jan 7, 2010
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].....
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Jan 25, 2010
I have 3 Interfaces for a different LAN's and when I start one interface the another interfaces goes down.How can it's possible?I configure my ethernets as:
Code:
/sbin/ifconfig eth0 172.16.3.108 netmask 255.255.0.0 broadcast 172.0.255.255
/sbin/ifconfig eth1 172.16.3.109 netmask 255.255.0.0 broadcast 172.0.255.255
/sbin/ifconfig eth2 172.16.3.1110 netmask 255.255.0.0 broadcast 172.0.255.255
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Apr 30, 2009
What traffic goes where? Why? Any bandwidth advantage? What if one goes down?
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May 15, 2011
I'd like to set up a restricted guest account which is not allowed to access any network interfaces. In particular, I don't want that user to access the internet either directly or through some network proxy, but I'd like my own account to still have normal internet access. How do I disable all network services for a particular account without affecting other accounts?
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