Debian Configuration :: Use A Network Bridge To Connect Virtual Machine?
Jul 26, 2011
I'm attempting to use a network bridge to connect my virtual machine, like so:
[Code]...
The issue is that when I type the following command, I get the further following horrible error message that doesn't seem to really point me to anywhere and I can't seem to find any relevant information to my problem on the web:
root@darkstacks:~# qemu-system-i386 -hda test.img -m 128 -curses -net nic -net tap,ifname=tap0 warning: could not configure /dev/net/tun: no virtual network emulation
Does anyone have any idea what I need to do here? My processor does not have the vmx flag, as it's a 2.4GHz P4. I don't know if that might have something to do with it.
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Apr 1, 2011
I have a debian squeeze box with dual NICs that I'm trying to configure with two virtual hosts. I'd like to have one of these machines act as a router for the 2nd NIC so I can plug in a switch and have a separate subnet.
Something like:
- Openwrt router 192.168.1.1 (firewall/vpn/stats for 192.168.1.0/24 domain)
- KVM machine with 2 NICs (192.168.1.2)
- Virtual machine #1 has a fixed IP of 192.168.1.3 (virtual nic)
- Virtual machine #2 has a fixed IP of 192.168.1.4 (virtual nic) but also controls the 2nd nic and routes 192.168.80.0/24
I'd like to use the 192.168.80.0/24 network for testing equipment without poisoning my existing network.
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Jan 5, 2010
I'm having issues with my GigE Marvell NIC. The problems have started recently. Anytime I push network bandwidth over ~9MB/s, I loose all network connectivity. Stopping the network, rmmod'ing and modprobe'ing the sky2 module and then starting the network again does not resolve the issue (even though eth0 dissapears and then comes back). The only non-standard configuration (as far as desktops go) in my network is that I use a bridge so a KVM virtual machine can be exposed directly to the network. I'm currently testing the problem to see if it exists outside of the bridge.
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Apr 9, 2011
I have two ethernet NIC's on my debian server. One built-in Realtek [eth0] (attached to internet), and a PCI Nvidia ethernet card [eth1] (attached to my Win7 netbook). I used this guide to setup the bridge: url. It worked when I was behind a router. But when I moved the computer in front of the router, to direct connect to the internet, the internet stopped functioning on any device that I plug into my Nvidia NIC. The name of my bridge is 'br0'. Does anyone know how to fix it, so I can route the internet to my second NIC?
My Win7 netbook displays this at an 'ipconfig' command:
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix:
Link-local IPv6 Address.....: fe80::143e:4cab:f802:8611%12
Autoconfiguration IPv4 Address..: 169.254.134.17
Subnet Mask.......:255.255.0.0
Default Gateway......:
My Debian interfaces file:
# 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 br0
iface lo inet loopback
# Set up interfaces manually, avoiding conflicts with, e.g., network manager
iface eth0 inet manual
iface eth1 inet manual
# Bridge setup
iface br0 inet dhcp
bridge_ports eth0 eth1
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Jan 18, 2016
I am very new to linux.I have a network camera which only has an Ethernet port but no WiFi. Sadly no Ethernet port is available close to the camera.
Therefore I now bought a raspberry pi and installed raspbian to create a bridge into the wireless network, for connecting the camera to the internet.I now played around with the interface- and bridge configuration but I have problems with it.This is how my interfaces file looks like:
(The WiFi is secured with WPA2 Enterprise)
Code: Select all# interfaces(5) file used by ifup(8) and ifdown(8)
# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
[code]....
The WiFi is connection works fine and I am in the internet using the WiFi.But I am wondering about eth0. The network parameters I specified are not the same as the parameters ifconfig tells me.Ip, Broadcast, Mask, nothing is as specified.It would be nice to give the camera a static IP that I can access it always with the same IP from the RaspberryPi.The Raspberry Pi itself gets always a new IP from the WiFi network. How do I get the camera into the internet using the existing connection of the Pi?
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Oct 6, 2015
I've been experimenting with Debian coming up with a system with suits my needs. I have done this and I'm wondering, "Do I have to start from scratch on my physical machine or can I convert an existing VDI to IMG and possibly port it to the physical machine?"
System: Debian Testing
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Feb 1, 2011
My sid machine currently can't access debian.org, through apt hitting the repositories, surfing through Epiphany or Iceweasel, or pinging the server directly. It was working fine until about four days ago. However, if I type in the IP address, I can access the website, so it must be some sort of DNS issue. My home server, running Squeeze, can access debian.org just fine. Any suggestions for how to fix it?
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Sep 23, 2015
I'm trying to install the openconnect VPN client on a server machine, Debian 7 Wheezy, and APT is trying to install a lot of dependencies. I think it's trying to install the whole desktop environment.I was searching the web but all articles are for desktop machines and nobody mentions my problem with the dependencies. I also have openconnect installed in two Gnome desktop machines without problems.
This is the output:
Code: Select all# apt-get install openconnect
Reading package lists... Done
Building dependency tree   Â
Reading state information... Done
[code]...
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Feb 18, 2011
I am using Squeeze and all appears OK at first... I have a DHCP lease, PING to router works, apache servering fine in and outside the network, Epiphany seems to connects to default debian.org only, BUT I cannot connect to any other websites and apt will not connect to any servers. I installed once, tried to fix problem, gave up and reinstalled and still have the same problem.
I unistalled Network Manager thinking that was the problem, but still the same issue. Is there a default firewall blocking certain connections or am I missing something I'm supposed to know about? I installed some non-free firmware in the beginning of install and all worked... and I connected fine when downloading packages during install.
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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 3, 2008
I have ubuntu-8.04.1-server installed on virtual machine. It works perfect. Now, I made copy of this virtual machine. I started that copied machine and it works fine, except one thing: network does not work!
I have several others VMs with freeBSD, openBSD or Windows on it, but only ubuntu machine hes network problem after coping. I tried some other VM with ubuntu on it - same problem! I downloaded VM with ubuntu - same problem.I take a look into /etc/network/interfaces file and it looks just as it should (same as before coping) but ifconfig command returns parameters for lo only (before coping there was eth0 and lo).
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May 31, 2010
I have a external harddisk attached to my linux PC.I have a laptop having windows 7 on my network.I want to to be able to open up the folder in the external harddisk(linux partition) and check the files from my laptop. People suggest samba. But I am not able to configure correctly. Please excuse me and give me few detailed instructions.
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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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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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Dec 24, 2010
Two nights ago I decided to switch from testing to unstable. Since then I am able to connect to the internet, but not to anything on my local network. I am unable to ping this computer from another one on the network. This computer is connected through wireless. I thought that something might have changed with iptables that was blockinghe localnetwork. I tried to "flush the iptables settings with "iptables -F". Since that didn't work I uninstalled iptables (which didn't work and I reinstalled iptables). In my browser I tried to connect to my router and that doesn't work either.I connect to this computer daily through ssh and connect to a NAS. Without ssh and my NAS I feel kinda lost
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Aug 31, 2011
I have a laptop (running Arch Linux) and a desktop. Until recently my desktop computer ran Arch but I'm taking Debian for a spin now. At my home there is a wireless network with WPA2 encoding. I use the wicd gui to connect to this. I assume, that since I can see the SSID in the wicd window, all drivers are correctly installed and functioning. On my Arch computer, wicd reports this SSID as having WPA2 encoding, but on the Debian computer, it shows up as WEP. Even when I choose the correct encryption thing, WPA2 (preshared key), and put the correct password in, I can't get a connection up.
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Jul 23, 2015
Since a recent update on Stretch, I have been unable to use the network-manager to connect to my home wireless network on my laptop. It was working fine before. I did not change any settings on the WLAN router. I can still connect to other wireless networks at work and university, just not this particular one at home. All other non-Debian devices in my household are still able to connect just fine.While figuring this out, I have tried connecting manualy with ifup but I don't really know how that works. Right now there is only the loopback entry in /etc/network/interfaces.
Below is the output of syslog, when gnomes network-manager is trying to connect, but fails.
Code: Select allJul 19 20:01:57 debian NetworkManager[6705]: <info>Â (wlan0): Activation: starting connection 'Affenbande'
Jul 19 20:01:57 debian NetworkManager[6705]: <info>Â (wlan0): Activation: Stage 1 of 5 (Device Prepare) scheduled...
Jul 19 20:01:57 debian NetworkManager[6705]: <info>Â (wlan0): Activation: Stage 1 of 5 (Device Prepare) started...
[code]...
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Apr 17, 2016
Recently upgraded my PC and my WiFi Hotspot connection is refusing to connect. Running a dmesg returns this
Code: Select all[66529.184299] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[66530.762594] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
And the IPv6 configuration in the Hotspot is Ignore
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Apr 20, 2010
i am searching for way to connect to my home network from any point only just if i have internet. i've heard about VPN and i think that this is right solution for my problem. can anyone point me to doc for beginners for setting up a VPN server? ps i've already searched for some articles and found two which were really for newbie, but it is interesting to find "best" how to for configuring vpn server.
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Apr 10, 2011
I can't seem to get this to work without having to physically create connections as root. The "Available to all users" in the nm settings box remains uncheckable, despite completing the following tasks:
Ensuring NetworkManager.conf contains
[main]
plugins=keyfile
[code]...
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May 5, 2011
I would like to connect from squeeze to my windows network. Do I need samba server, smbclient is already installed?
If I do a doubleclick -> Windows Network then get "Unable to mount location".
If I use -> Connect to Server -> Windows Share then it works well.
How to configure samba server that I can see Windows machines in "Windows Network"?
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May 20, 2011
I bought a USB wireless adapter for my desktop. I finally got it to partially work using firmware-ralink as described [URL]sing network manager it will pick up my wireless network. However it will not connect to it.
The output of iwconfig is
wlan0 IEEE 802.11bg ESSID:"familyfarm"
Mode:Managed Frequency:2.437 GHz Access Point: 00:1C:DF:B6:EA:B9
[code]...
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Apr 25, 2016
I have got a debian (v3.16.7-ckt25-2) for server (without X). There is a br0 bridge connected to eth0 network device. It works fine when I start it manually by
Code: Select all# ifup br0 but I cannot start automatically at startup.
there was a missing line in /etc/network/interfaces:Code: Select allauto br0
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Aug 24, 2010
I have a main Ubuntu system and a virtual Windows system, set up using QEMU/KVM. So, I can start Windows using virt-manager and connect to it using a VNC client.But what I really want to have is a new Xorg display that is connected to this Windows system, so that e.g. CTRL-ALT-F8 shows Ubuntu, CTRL-ALT-F9 shows Windows. That'd be a real alternative to a Linux/Windows dual-boot setup.
I know that GDM had some option to connect to another X server (XDMCP), but I couldn't get this to work with GDM2/Ubuntu 10.4. Would this somehow also work to connect to a VNC server (like the virtual Windows system)? how to make Xorg provide a display for incoming VNC connections, but nothing on how to do the opposite.
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Sep 28, 2010
Recently loaded 11.3 onto a virtual machine, however none of the network settings will allow me to connect to the internet. First time Ive had this happen, other distro's Ive experimented with connected with no problems. I recall seeing a similar topic some time ago (dont remember if it was here or another forum), but at the time, there had been no fix. Anyone know if this has been fixed?
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Mar 17, 2011
you add a rule which allows a virtual machine to connect to ssh on the main fedora host?so connecting from a virtual machine to the main fedora host installation? I think i have to use an iptables command but not really sure
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Apr 26, 2010
I installed Oracle Enterprise Linux on Virtual Machine.
I try now to connect to internet through this VM but i cannot.
How can i make connect?
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Dec 4, 2015
I try to connect my Debian Jessie to my Windows share
This is what I have done:
-> 1 - create an .smbcredentials file located in my /home directory (with account / password and domain)
-> 2 - implement /etc/fstab with information like that :
//192.168.x.x/Animes/media/Animes cifs uid=toto,dir_mode=0777,file_mode=0777,credentials=/home/.smbcredentials,iocharset=utf800
and when I try to go on my windows share, I have this message:
An error occurred while accessing 'Home', the system responded: mount: only root can mount //192.168.x.x/Audio-Video-01 on /media/Audio-Video-01
I think about one thing, if uid=toto is different in fstab than my current debian account session name, it is possible the problem came because of that?
(fstab, uid=toto and current session titi)
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Apr 17, 2011
I upgraded from lenny to squeeze on a notebook and I can no longer connect to the wireless network. The computer is an LG notebook and the network card is ralink rt2860. I am using Gnome and NetworkManager. The wireless key is WEP hex. It was working fine with lenny till before the upgrade. After the upgrade, the network card stopped working. So, I checked
$ lspci|grep Network
08:00.0 Network controller: RaLink RT2860
Then I reinstalled the driver with apt-get install firmware-ralink wireless-tools Then the network manager tray started working again and saw the network, but cannot connect. It was trying to connect but timed out and kept asking for the password. It is the correct password. I tried deleting the old connection and recreated a new one in the nm. But still does not work.
[Code]...
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May 17, 2011
I'm trying to bridge connections between a wired and a wireless connection in one of my computers. I was told it was impossible due to low-level limitations in the wireless subsystem, but apparently theres a way if you somehow forward packets from one port to the other. Is there a way I can achieve this?
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