Debian Configuration :: Network Namespace Bridging
Jan 27, 2016
My task is to create network namespace, so it can be used to perform some other tasks from it.
Debian 8.2 is used in VMWare virtual machine on windows 7. I have also tried same things with Raspbian on Raspberry Pi 2, but same problems appear.
First, i have followed tutorial https://lwn.net/Articles/580893/ to create pair of virtual ethernet interfaces.
Now i have veth0 in global namespace with ip address 10.1.1.2/24, and veth1 in netns1 namespace with ip address 10.1.1.1/24, and i was able to ping each one from another
Next, i have followed tutorial [URL] ..... to bridge eth0 and veth0, so i can access internet from netns1 namespace.
- First, i have deleted ip addresses for both eth0 and veth0
interfaces, and set them do DOWN state.
- New bridge is created (br0) and both interfaces (eth0 and veth0) are
added to it.
- Then both interfaces are set to UP state, and i run "dhclient br0" to
assign ip address to br0.
From global namespace now it is possible to run "ping google.com" (and br0 interface is used), but from netns1 namespace i get error "Network is unreachable".
$ ip addr show
Code: Select all 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
[CODE]....
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Oct 6, 2010
I have just installed openSUSE 11.3 and enjoy using MonoDevelop , and I tried to use XML Serialization in C# : The Help shows the following code for XML Serialization :
C# Example
// Simple XML serialization
using System;
using System.IO;
using System.Xml.Serialization;
public class MyObject {
[Code]...
but when tried the same code the error was : /home//Projects/xmlTest/Main.cs(14,14): Error CS0234: The type or namespace name `Xml' does not exist in the namespace `System'. Are you missing an assembly reference? (CS0234) (xmlTest)
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May 27, 2009
i'm trying to install virt-manager , to run a couple of virtual machines, i created a virtual nic vnet0 and bridged it to my eth0, i have configured the /etc/network/interfaces file with proper static ip, but i beleive the network manager is renaming my nic to eth1 and causing all kinds of problems. I uninstalled network manager and now i can ping anywhere in the network, but not outside it. ie google.com
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Mar 5, 2010
you can do secondary interfaces (virtual interfaces?) for your virtual machines (domU's) and not loose your eth0 to the bridge. Is there documentaion on Xen in OpenSUSE without bridging?
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Feb 24, 2011
I'm a web developer etc. Came from using Windows - Love Ubuntu, alot. I installed Apache, PHP5, MySQL etc. Where can I access the htdocs? I've searched everywhere for the index file, but I cannot seem to find it. Now, my second question is. How can I bridge my connection from my wireless to my xbox 360? It was relatively easy on Windows 7 (however it is my native OS, had it since I was a kid). But since I'm new (today) to Ubuntu, I have no Clue What to do.
Also, the dns servers are like, 10.x.x.x.x - However on my router it's 192.168.2.1, for both 1 and 2. On my xbox, when I had it bridged from my laptop to my xbox (on 7), it worked fine while manually setting ip and DNS servers to that of my laptop, however if I use the same settings for my xbox with Ubuntu, it will say can't connect using a static IP, then when I auto define the settings, the IP works etc, but the DNS servers cannot communicate with xbox.com. (Even if I leave them as 192.168.2.1).
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Aug 14, 2011
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.
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Oct 5, 2010
Just recently set up a Slackware 13.1 partition. I'm really enjoying how it works so far, but I have one problem I just can't seem to find the right solution to, and was hoping for some assistance. Here is the basic setup. The Slackware box has eth0 connected to my wired router, and eth1 goes to an xbox running Xbmc. What I require is that the Xbox gets it's own DHCP IP from the router. In other versions of Linux I accomplish this by using bridge-utils. In Arch Linux I accomplish this by having this in /etc/rc.conf:
Code:
eth0="eth0 up"
eth1="eth1 up"
br0="dhcp"
INTERFACES=(lo eth0 eth1 br0)
and this in /etc/conf.d/bridges:
[Code]...
I know I'm close here, but I just can't get it to bring the network up with the bridge by restarting the networking, or rebooting.
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Aug 24, 2011
does Network Manager in Fedora 15 support bridging and if so, can you configure the bridge using your wireless interface? All of the information I've come across so far said that you can NOT create a bridge using a wireless interface, and that Network Manager doesn't support bridging, but this info was also from Fedora 12 and below, so I don't know if it's still relevant for Fedora 15. I would certainly hope that by now you can make a bridge from a wireless interface. Even the lowly VMware Player offers this option.
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Mar 24, 2011
After restoring from a hardware failure, I cannot get bridging to work again. I reinstalled the host version 5.5, and copied the .img file back onto the rebuilt machine. I also had the network scripts and iptables backed up. Through virt-manager I re-attached the virtual machine, and when I boot it, I get a MAC address conflict on the vm's eth0; "Device eth0 has a different MAC address than expected". The vm had a static ip address.
[root@trngvh ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
HWADDR=00:24:81:E4:FC:02
[code]....
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Mar 3, 2011
I was playing with my debian server when something went totally wrong while i was editing something on my network interface,i removed those crap that i wrote and left the network interface configuration as it was
Like for example after re-editing my network interface,it was like :
As i did a network restart, i get this error saying :
There is already a pid file /var/run/dhclient.eth0.pid with pid 2802 killed old client process, removed PID file.
What is this error and how can i fix it,because every time im re booting my server i lost my network config.
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Oct 24, 2010
I'm planning to use Debian as the OS for a firewall machine, which will sit between my internet connection and the rest of my computers. Now my network is all wired, no wireless whatsoever. I'm using the onboard the motherboards cat5 socket which seems to be using the VIA rhine driver and I'm also using a 3com 100MBps card.
I can list the machine spec if you want but it's nothing special, an old Athlon 64 rig with 1gb ram and an OEM motherboard, it all seems to work ok apart from the internet doesn't' seem to work. Lenny seems to detect both cards ok and I even used the net install CD and it managed to download everything using the 3com card.
The strange thing is when I'm in Lenny, I can't seem to connect. I can ping google, but when I try and view a webpage, the browser just sits there with a while screen... Could it be that using 2 network cards is confusing Debian? Right now I've only got the modem hooked up the the 3com card, and nothing connected to the onboard network card.
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Feb 14, 2011
I have a new install of Debian Squeeze from debian-6.0.0-amd64-kde-CD-1.iso but I'm experiencing problems with the wireless internet applet in the taskbar.When the computer boots, it doesn't connect automatically eventhough I have it set as such. I have to fiddle with it until I get the request from KDE Wallet Manager to insert the password to complete the connection. I didn't have this behavior in Kubuntu.
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Jan 16, 2011
I have been searching for a decent definition for this and have come up empty. The defintions I have found are so abstracted that they are meaningless. Could I get a defintion that has "corners" and some context? Is it a verb,a noun,can it fly or crawl?
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Jan 18, 2010
I'm opening up Network and it asks me for the root password. I enter it and the program comes up. I enter a static address for both eth0 and eth1.
I don't see a Save button. Eventually I get out of the configuration tool. The next time I run the tool, my static addresses have not been saved.
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Sep 14, 2010
I've illustrated it on this picture, and hope to get the help i need to set it up... [URL]Thow it has to be furture secured, in that meaning it has to be abel to attach a eth2 on the main server, so i have 3 NIC's.Also, i want to have fully controll over ports, IP/MAC's and data overview (Such as a view of the files beeing downloadet/uploadet).
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Apr 9, 2011
I installed testing on my netbook with cd1. and too my suprise it didn't even include something as important as network manager. all i want to do is connect to my wired internet, install network manager, then install my driver for card. if i can just get wired working i will be homefree. the directions for installing my wire3less driver look super simple.
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May 21, 2011
I have a server and I have a few computers connected to it via a Airport Extreme. Using network cable. So when Im uploading,(ftp) IE using a lot of the network "space" the other computers on the network gets kicked out. So what is going on? My Airport Extreme is doing fine, but my other clients just get kicked out. If I pause the upload, everything is okay again. The whole network is 1 gigabit, clients, everything.
[Code].....
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May 25, 2011
I have a computer home that I use a web server and I had Lenny in it for about a year and didn't experience any problems. Recently I needed to update to Squeeze just to be able and use part of my server for a game(which I couldn't compile on Lenny). I renamed every "lenny" word in the /etc/apt/sources.list with "squeeze" and ran dist-upgrade. Everything seemed fine(minor some "link not found" warnings). I also had some minor problems with the mysql configuration after the update but I managed to fix them all. Then I noticed that after some hours(not sure how many) I can suddenly not reach my computer via ssh. Neither can I visit my website(even from the local network). The computer doesn't appear either in the router's "attached devices" list. My other computers have no problems so it can't be a router issue.Pinging from the server to the outside world doesn't work. I tryied "sudo /etc/init.d/networking restart" and that didn't do anything. The only way to fix the problem is by rebooting but then again after some hours the problem is still there. Do you guys have any idea what the problem can be?
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Aug 4, 2015
I'm trying to install using windows 7 on a 2010 macbook pro. Firstly the network configuration won't work and secondly the cd rom can't be detected. I've rewritten the usb drive several times with no joy.
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Aug 11, 2011
Some problems keep bothering me and dont let me use my debian sqeeze with joy.Im in network with no DHCP on. When installing i didnt configure my eth network card.After each restart i need to configure manually my eth because it loses it.
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Jun 30, 2015
I have just installed Debian Weezy and for some reason it just does not see my router.1) is there a good network config script I can use?if not then what files must be edited to setup the network?When I attempt to ping the router, it does not see it. I have checked the cables etc.
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Aug 21, 2015
I installed a fresh Debian Desktop without the LAN cable connected. After that I got message when I put the cable in:
Code: Select allNetwork Interface
Connection New Wired Connection failed
I have tried to re-install everything once again with the cable in, but during the Debian installation there was no network detected.
However, I proceeded and re-installed Debian. But the problem persists. It continues to re-connect and than disconnect. There is a symbol showing re-connection. The network eth0 is visible to the machine.
I booted Mint Live disc and the same happens there.
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Oct 3, 2015
Debian Testing, updated daily, running Gnome.
A week ago, a new router was installed at the office and now my system "loses" the networks printers and forces me to manually select them within Cups various times a day to be able to print. The issue was not present when the old router was in place, and all my colleagues can print without problems using their Windows machines.
This only affects printing, for Simple Scan can always communicate with the printers without problems.
The printers are two basic Epson L355 (those with ink tanks) and the "official" driver (from Open Printing) has been working perfectly since I installed Debian. The whole Cups and Avahi stack is installed, and I even added system-config-printer this week to make sure that I was not missing a package.
Because the only variable that changed is the router, there has to be something there messing with my Cups or Avahi configuration.
Note that the new router had a "vanilla" installation, where no advanced settings were touched. All connected devices (computers, mobile phones, printers, etc.) are given new IP address through DHCP every day.
Where should I start? I have already deleted and added the printers within Cups several times during the week, and the problem persists. Is the router renewing the address more often than the old one did? Can this "refresh" be delayed? Should Avahi monitor devices more often?
I guess that I could configure the router and give static IP addresses to the printers, but such a setting was not present in the old router and my computer could locate the printers without problems.
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Nov 28, 2015
It seems that my network manager may be running in root mode...
For instance in network connections, edit and delete are greyed out. if i click add, i am unable to enter any details. if i run nm-connection-editor as root i am able to make changes.
How can i set it that the normal user can make changes? [managed is set to true in the conf file]
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Dec 16, 2015
When in Thundar (on XFCE - Debian 8.2) and I click the "Network" icon in the left sidebar the following message is displayed.
Failed to open "/ on". Specified location is not supported.
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Mar 25, 2016
I am running Jessie 8.3 and wireless in Wicd has stopped working for me, displaying "No Wireless Networks Found."
Code: Select allsudo /etc/init.d/wicd restart Restarted wicd
Made sure wlan0 is in wicd preferences.
iwconfig:
Code: Select alleth0 no wireless extensions.
wlan0 IEEE 802.11abg ESSID:"Tell My Wifi Love Her"
Mode:Managed Access Point: Not-Associated Tx-Power=200 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
lo no wireless extensions.
For some reason my user account was removed from the netdev group? So I readded it...
Code: Select allekarr@fidelio:~$ sudo gpasswd -a ekarr netdev
Adding user ekarr to group netdev
[code]....
And still, "no wireless networks found" in Wicd.
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Mar 9, 2010
I have configured a RaLink wireless card to connecto to an 802.1x network. I connect by selecting the network, and the i give the credentials(username/password). How do i configure Debian to automatically connect to this network when a session begins?
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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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Jul 19, 2010
I moved to static Ip method for my laptop. I edited the interfaces file and it seems to work since I am writing this message from that laptop, but I have a new problem with my Debian. The mounts are not mounted during the startup anymore. Before I was using the network manager method and the nerwork mounts were all fine. Now with this method, they are not mounted and I need to mount them by firing "sudo mount -a" manually.
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