Bridged Network - Ubuntu host

[sabrina7]

Hi,

I have been trying to configure my host machine (ubuntu) with a bridged mode.

My /etc/network/interfaces file looks like this:

auto eth0
iface eth0 inet manual
auto br0
iface br0 inet dhcp
bridge_ports eth0 vbox0 vbox1 vbox2
auto lo
iface lo inet loopback

My /etc/vbox/interfaces file looks like that:

vbox0 sabrina br0
vbox1 sabrina br0
vbox2 sabrina br0


if I run the command:
brctl show

I get:
root@dellb807:/etc/network# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.0022190eaf71 no eth0
vbox0
vbox1
vbox2


Then, I launched VirtuallBox and I configured the "network" parameter of the virtual machine with "host interface" and vbox0 for instance.
After starting the virtual machine, the internet connection does not work and I do not know how to assign a new IP adress to that machine.

A note:

root@dellb807:/etc/network# sudo /etc/init.d/virtualbox-ose restart
* Shutting down VirtualBox host networking... [ OK ]
* Starting VirtualBox host networking... Warning - failed to add interface vbox0 to the bridge br0
Warning - failed to add interface vbox1 to the bridge br0
Warning - failed to add interface vbox1 to the bridge br0

I have warnings that the vbox0.. were not added to the bridge.

Would anyone have an idea of the problem?

Thank you very much in advance.

Sabrina.

[metodk]

I have been trying to configure my host machine (ubuntu) with a bridged mode.

My /etc/network/interfaces file looks like this:

auto eth0
iface eth0 inet manual
auto br0
iface br0 inet dhcp
bridge_ports eth0 vbox0 vbox1 vbox2
auto lo
iface lo inet loopback

You shouldn't add vbox virtual interfaces to bridge at this stage. They are added later on by

root@dellb807:/etc/network# sudo /etc/init.d/virtualbox-ose restart

Starting with VB 2.1 networking became even easier: you don't need a bridge. You simply select real host interface (eth0). You do need to install some linux tools, this is described in VB documentation.