Simple bridging tutorial for ubuntu required.

[unabatedshagie]

I'm running ubuntu gutsy and have virtualbox installed fom the repo.

I have windows installed in a guest machine.

What I would like to do is stream media from the windows guest to my xbox 360 using tversity.

Through what I have been able to find on the net it seems I have to set up a bridged connection between ubuntu and windows.

This is where I'm finding it hard to find information.

It seems like it's possible but as of posting this I have been unable to find anyone that has posted detailed info on how to do it.

I have read the virtualbox manual chapter on setting up bridging but if anything it has left me more confused than when I started.

Could some kind soul give me a hand in setting up bridging between the host and guest?

[stefan.becker]

Look in the User Doc,

[unabatedshagie]

You mean the user manual? If so I already said I did and it has left me more confused than before I started.

[stefan.becker]

That is Step by Step. Nothing more is needed. Nothing more is there on the web as doc.

Try it. If you get Problems, post Commands and Errors word by word.

[unabatedshagie]

ok, fair enough.

I managed to find this which explains it in a slightly easier to read/understand format (for me anyway)

I followed it, installed bridge-utils and uml-utilities, changed the group, changed the network adapter to Host Interface and the interface name to tap0

Stopped the networking service, edited the file (changing bimma for my username and 10.10.10.60 to 192.168.0.2) changed the gateway to 192.168.0.1 and started networking service again.

This is the terminal output after I started networking up again

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alex@MysteryMachine:~$ sudo /etc/init.d/networking start
 * Configuring network interfaces...                                            
Set 'tap0' persistent and owned by uid 1000
net.ipv4.conf.tap0.proxy_arp = 1
Set 'tap1' persistent and owned by uid 1000
net.ipv4.conf.tap1.proxy_arp = 1
Set 'tap2' persistent and owned by uid 1000
net.ipv4.conf.tap2.proxy_arp = 1
Set 'tap3' persistent and owned by uid 1000
net.ipv4.conf.tap3.proxy_arp = 1
Set 'tap4' persistent and owned by uid 1000
net.ipv4.conf.tap4.proxy_arp = 1
Set 'tap5' persistent and owned by uid 1000
net.ipv4.conf.tap5.proxy_arp = 1
                                                                         [ OK ]
alex@MysteryMachine:~$ 

I'm not sure if that's correct or not.

Started windows and there is a local area connection status icon in the notification area which states that there is limited or no connectivity.

192.168.0.2 is the ip address that I have set my router to assign to my linux machine, would that have any effect on what I'm trying to do?

[Ingo]

No, No, No.
That doesn't match your needs.
Please setup your /etc/network/interfaces like this:

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# 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

# setting up the bridge #######
auto eth0
iface eth0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down

auto br0
iface br0 inet dhcp
    bridge_ports eth0
# End setting up the bridge ###

Then execute these commands:

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$ sudo VBoxAddIF vbox0 <user> br0
$ VBoxManage modifyvm "My VM" -hostifdev1 vbox0

<user> is your linux login name.
"My VM" is your virtual machine you will use for the brigde.

Now reboot your machine and give me the output of this command:

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$ sudo ifconfig

[unabatedshagie]

Ingo, thank you very much for the help.

The virtual machine can connect to the net at the same time as my main machine.

I'm about to try and get the virtual machine to connect to my xbox.

You wanted the output for the command ifconfig, well here it is.

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alex@MysteryMachine:~$ ifconfig
br0       Link encap:Ethernet  HWaddr 00:18:F3:49:A9:3A  
          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::218:f3ff:fe49:a93a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:774 (774.0 b)  TX bytes:3835 (3.7 KB)

eth0      Link encap:Ethernet  HWaddr 00:18:F3:49:A9:3A  
          inet6 addr: fe80::218:f3ff:fe49:a93a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:886 (886.0 b)  TX bytes:3975 (3.8 KB)
          Interrupt:16 Base address:0x4000 

eth1      Link encap:Ethernet  HWaddr 00:18:F3:49:AE:9C  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:17 Base address:0xa000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vbox0     Link encap:Ethernet  HWaddr 00:FF:50:CF:42:C1  
          inet6 addr: fe80::2ff:50ff:fecf:42c1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:6 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

wlan0     Link encap:Ethernet  HWaddr 00:15:AF:07:F8:DC  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

wmaster0  Link encap:UNSPEC  HWaddr 00-15-AF-07-F8-DC-00-00-00-00-00-00-00-00-00-00  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

alex@MysteryMachine:~$ 

[Ingo]

I do not understand where this interfaces eth1, wlan0 and wmaster0 come from. They all have no IP address. But if they aren't part of the bridge don't worry about them. I suppose it's some initialized hardware e.g. wlan chip and firewire or so.

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$ sudo brctl show

should only list two interfaces eth0 and vbox0.

[unabatedshagie]

Again thanks for the help.

Yes that command only shows two entries.

The eth1 is because my mobo has two ethernet ports and I'm guessing that maybe wlan0 and wmaster0 are because my mobo has built in wireless.

[carlosalvatore]

Greetings, I'm having a similar problem. I want my virtualbox OS be able to share folders, and play multiplayer games (Starcraft).
I connect to the internet through a Gateway (2Wire), it assigns address via DHCP.
I'm hosting the VBox on Ubuntu Hardy 8.04, the guest OS is Windows XP SP2.

I've read this post and the docs, but nothing seams to work.

I've also tried to set the guest IP Address manually, then the Gateway sees the host, it recognize that there is a computer connected with a static IP address, but there is no connectivity at all.

This is my /etc/network/interfaces file

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# 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

# The primary network interface
auto eth0
iface eth0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down 
#iface eth0 inet dhcp

#
#auto tap0
#iface tap0 inet manual
#up ifconfig $IFACE 0.0.0.0 up
#down ifconfig $IFACE down
#tunctl_user carlosalvatore

#
auto br0
iface br0 inet dhcp
bridge_ports eth0

also:

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$ sudo brctl show
bridge name	bridge id		STP enabled	interfaces
br0		8000.0001803ae6ff	no		eth0
							vbox0

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$ sudo ifconfig
br0       Link encap:Ethernet  HWaddr 00:01:80:3a:e6:ff  
          inet addr:195.165.0.4  Bcast:195.165.0.255  Mask:255.255.255.0
          inet6 addr: fe80::201:80ff:fe3a:e6ff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:38823 errors:0 dropped:0 overruns:0 frame:0
          TX packets:58000 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:4989413 (4.7 MB)  TX bytes:77187202 (73.6 MB)

eth0      Link encap:Ethernet  HWaddr 00:01:80:3a:e6:ff  
          inet6 addr: fe80::201:80ff:fe3a:e6ff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:181425 errors:0 dropped:0 overruns:0 frame:0
          TX packets:266380 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:22707905 (21.6 MB)  TX bytes:367811349 (350.7 MB)
          Interrupt:11 Base address:0xd000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5630 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5630 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:598055 (584.0 KB)  TX bytes:598055 (584.0 KB)

vbox0     Link encap:Ethernet  HWaddr 00:ff:db:b9:07:04  
          inet6 addr: fe80::2ff:dbff:feb9:704/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:95 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:6 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:15054 (14.7 KB)  TX bytes:60 (60.0 B)

The gateway acts like a Router-Modem with NAT, it is configured to provide DHCP address into the home network using this Address mask (195.165.0.x) with the subnet mask (255.255.255.0) The Gateway uses 195.165.0.1. So this is my default gateway to connect the internet.

This is the output when the network is restarted

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$ sudo /etc/init.d/networking restart
 * Reconfiguring network interfaces...                                          There is already a pid file /var/run/dhclient.br0.pid with pid 4483
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/br0/00:01:80:3a:e6:ff
Sending on   LPF/br0/00:01:80:3a:e6:ff
Sending on   Socket/fallback
DHCPRELEASE on br0 to 195.165.0.1 port 67

Waiting for br0 to get ready (MAXWAIT is 32 seconds).
There is already a pid file /var/run/dhclient.br0.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/br0/00:01:80:3a:e6:ff
Sending on   LPF/br0/00:01:80:3a:e6:ff
Sending on   Socket/fallback
DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 8
DHCPOFFER of 195.165.0.4 from 195.165.0.1
DHCPREQUEST of 195.165.0.4 on br0 to 255.255.255.255 port 67
DHCPACK of 195.165.0.4 from 195.165.0.1
bound to 195.165.0.4 -- renewal in 1775 seconds.
                                                                         [ OK ]

The fact is when starting Windows XP (the guest OS) I can't get any IP address, so i don't know if I must set any static IP for it, 'cause in /etc/network/interfaces it's configured to use dhcp.

Any advice will be of help. Thank you very much. (Gracias very mucho! )

Edit: I forgot to mention that the host OS has internet connection without problems, and the other (Windows) computers in the home network communicate each other without any problem, so the fact is that i want to add the VirtualBox to the network as a different entity (like it was another computer connected to the home network)

[korb]

Carlos,

My setup is very similar to yours (host is hardy 8.04, guest XP pro, assuming vbox 1.6) and I am attempting to create the exact same setup. Like you, my host connects to my network just fine, but my XP guest cannot get an IP via DHCP.

My /etc/network/interfaces:

Code: Select all

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down

auto tap0
iface tap0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down
    tunctl_user rkorb

auto br0
iface br0 inet dhcp
    bridge_ports eth0 tap0
    bridge_stp off

Which appears to work fine as the host does get the appropriate IP:

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8# ifconfig -a
br0       Link encap:Ethernet  HWaddr 00:1d:09:4e:ae:6c  
          inet addr:192.168.1.113  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:9ff:fe4e:ae6c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:101 errors:0 dropped:0 overruns:0 frame:0
          TX packets:86 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:16012 (15.6 KB)  TX bytes:12225 (11.9 KB)

eth0      Link encap:Ethernet  HWaddr 00:1d:09:4e:ae:6c  
          inet6 addr: fe80::21d:9ff:fe4e:ae6c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2968 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1866 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2389912 (2.2 MB)  TX bytes:187930 (183.5 KB)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1990 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1990 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:99660 (97.3 KB)  TX bytes:99660 (97.3 KB)

tap0      Link encap:Ethernet  HWaddr 00:ff:8d:b1:eb:84  
          inet6 addr: fe80::2ff:8dff:feb1:eb84/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:70 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2 errors:0 dropped:737 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:11764 (11.4 KB)  TX bytes:120 (120.0 B)

I started my DHCP server in debug mode, and I see the following: my guest sends a DHCPDISCOVER request, my DHCP server responds with an appropriate DHCPOFFER, and using wireshark on my host I see that the DHCPOFFER packets are making it to the host, but apparently the host is not passing those on via the br0/tap0 plumbing to the guest.

It appears as though I have this all configured properly. I followed the User Guide as well as another forum post where Ingo helped somebody in December with this problem, only they were on vbox 1.5 - http://forums.virtualbox.org/viewtopic. ... c&start=15).

At this point, it appears that somehow the hardy 8.04 bridge is not working as it should, or vbox is not passing the DHCPOFFERs back to the guest.

Can anyone offer any suggestions as to other things to try?

Thanks!

Bill

[gagarobu]

Carlos,

My setup is very similar to yours (host is hardy 8.04, guest XP pro, assuming vbox 1.6) and I am attempting to create the exact same setup. Like you, my host connects to my network just fine, but my XP guest cannot get an IP via DHCP.


At this point, it appears that somehow the hardy 8.04 bridge is not working as it should, or vbox is not passing the DHCPOFFERs back to the guest.

Can anyone offer any suggestions as to other things to try?

Thanks!

Bill

Try this:

/etc/network/interfaces:

Code: Select all

auto lo
iface lo inet loopback

auto br0
iface br0 inet dhcp
    bridge_ports eth0

Restart the network

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 sudo /etc/init.d/networking restart

Add virtual networkcard

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sudo VBoxAddIF vbox0 Bill br0

Bill is your username

then attach vbox0 as HIF for your Windows Guest
(and don't forget in your Windows Guest to set DHCP client on)

[carlosalvatore]

Try this:

/etc/network/interfaces:

Code: Select all

auto lo
iface lo inet loopback

auto br0
iface br0 inet dhcp
    bridge_ports eth0

Restart the network

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 sudo /etc/init.d/networking restart

Add virtual networkcard

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sudo VBoxAddIF vbox0 Bill br0

Bill is your username

then attach vbox0 as HIF for your Windows Guest
(and don't forget in your Windows Guest to set DHCP client on)

In /etc/network/interfaces:

Did you mean

Code: Select all

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dchp

auto br0
iface br0 inet dhcp
    bridge_ports eth0

because without the eth0 i have no internet in the host.

Thank you

[korb]

I agree somewhat with Carlos: I need to include configuration for eth0 in /etc/network/interfaces. That is because if I do not, Ubuntu (the host) automatically DHCPs for that interface, and both eth0 & br0 end up with the same IP address. When that happens, Ubuntu cannot contact other hosts, let alone the guest.

So I've decided to simplify, and remove the Ubuntu native items from the process. I deleted the uml-utilities package, deleted all of my tap interfaces, and started over.

Here is my current /etc/network/interfaces:

Code: Select all

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual
    up ifconfig $IFACE 0.0.0.0 up
    down ifconfig $IFACE down

auto br0
iface br0 inet dhcp
    bridge_ports eth0
    bridge_stp off

Note that I require that spanning tree be turned off, otherwise the broadcasts that result cause our corporate network to disable my switch port.

I created the vbox0 interface as directed in the vbox 1.6 User Manual (VBoxAddIF vbox0 rkorb br0).

My interfaces and bridge now look like this:

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2# ifconfig -a
br0       Link encap:Ethernet  HWaddr 00:1d:09:4e:ae:6c  
          inet addr:192.168.1.113  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:9ff:fe4e:ae6c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:414 errors:0 dropped:0 overruns:0 frame:0
          TX packets:324 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:187114 (182.7 KB)  TX bytes:45631 (44.5 KB)

eth0      Link encap:Ethernet  HWaddr 00:1d:09:4e:ae:6c  
          inet6 addr: fe80::21d:9ff:fe4e:ae6c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:424 errors:0 dropped:0 overruns:0 frame:0
          TX packets:324 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:187674 (183.2 KB)  TX bytes:45631 (44.5 KB)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2066 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2066 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:103460 (101.0 KB)  TX bytes:103460 (101.0 KB)

vbox0     Link encap:Ethernet  HWaddr 00:ff:c6:e2:da:04  
          inet6 addr: fe80::2ff:c6ff:fee2:da04/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:162 overruns:0 carrier:0
          collisions:0 txqueuelen:500 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

3# brctl show br0
bridge name   bridge id          STP enabled  interfaces
br0           8000.001d094eae6c  no           eth0
                                              vbox0

However, the Windoze guest is still unable to get a dynamic IP:

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C:\Documents and Settings\Administrator>ipconfig /renew

Windows IP Configuration

An error occurred while renewing interface Local Area Connection :
 unable to contact your DHCP server. Request has timed out.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : maplapvbox-xp
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter
        Physical Address. . . . . . . . . : 08-00-27-6F-2A-31
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        Autoconfiguration IP Address. . . : 169.254.9.105
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . :

The Ubuntu account that is running vbox is named "rkorb", and it has the appropriate permissions on /dev/net/tun:

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4# ls -l /dev/net/tun
crw-rw---- 1 root vboxusers 10, 200 2008-05-15 19:09 /dev/net/tun
5# groups rkorb
adm dialout cdrom floppy audio dip video plugdev scanner lpadmin admin netdev powerdev sambashare vboxusers

So although everything looks correct, clearly something is still amiss.

Any other thoughts?

Thanks,
Bill

[gagarobu]

Any other thoughts?

Thanks,
Bill

have you try a dummy test?

set an static ip address on your windows guest machine.

if your guest can connect to existing network, then the problem in your dhcp server (maybe your dhcp server set ip based on mac address, or else)

if your guest cannot connect to existing, then the problem is in vbox0 (HIF)