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Bug 244693 - Network device selection fails during new VM creation process
Network device selection fails during new VM creation process
Product: Fedora
Classification: Fedora
Component: virt-manager (Show other bugs)
x86_64 Linux
low Severity medium
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Assigned To: Daniel Berrange
Martin Jenner
Depends On:
  Show dependency treegraph
Reported: 2007-06-18 11:45 EDT by Adam Huffman
Modified: 2008-03-12 16:10 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2008-03-12 16:10:43 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Image of network device page (38.72 KB, image/png)
2007-06-18 11:45 EDT, Adam Huffman
no flags Details

  None (edit)
Description Adam Huffman 2007-06-18 11:45:16 EDT
Description of problem:

I've been trying to use virt-manager to create a new HVM under F7.  The
application proceeds quite happily until the "Connect to host network" page. 
I'm trying to select the physical device option, but the drop down appears as a
very thin line.

Version-Release number of selected component (if applicable):

How reproducible:
Every time

Steps to Reproduce:
1. Start new guest creation
Actual results:
New guest creation fails at host network creation page

Expected results:
Should be able to select a network device.

Additional info:
Comment 1 Adam Huffman 2007-06-18 11:45:16 EDT
Created attachment 157290 [details]
Image of network device page
Comment 2 Daniel Berrange 2007-06-18 11:55:18 EDT
If the 'Shared physical device' list doesn't have any devices listed, then none
of your ethernet devices are members of a bridge.

If you are using Xen, then the network-bridge script will make eth0 part of a
bridge. The recommended way is to use the regular network scripts though.

In /etc/sysconfig/network-scripts: the file ifcfg-peth0 should define the
physical device, with something like


and the file ifcfg-eth0 should be defining the bridge device to which the
physical device is enslaved:


If you have already got eth0 enslaved in a bridge & virt-manager dosn't work,
please provide ifconfig -a and  brctl show   output.
Comment 3 Adam Huffman 2007-06-18 12:01:46 EDT
Should this 'ifcfg-peth0' file have been created automatically?  I do have a
virbr0 device, but nothing appears to be using it:

eth0      Link encap:Ethernet  HWaddr 00:18:8B:1D:9A:CB  
          inet addr:xx.xx.xx.xx  Bcast:xx.xx.xx.255  Mask:
          inet6 addr: fe80::218:8bff:fe1d:9acb/64 Scope:Link
          RX packets:1665844 errors:0 dropped:0 overruns:0 frame:0
          TX packets:452804 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:471571008 (449.7 MiB)  TX bytes:55414602 (52.8 MiB)

virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:10336 (10.0 KiB)
Comment 4 Daniel Berrange 2007-06-18 12:04:30 EDT
No, the default scripts in /etc/sysconfig/network-scripts  do not setup eth0 in
a bridged configuration. This is because bridging doesn't work for many
scenarios (Wifi, networkmanager, any machines with dynamic networking in
general), so the safe option is not to setup any bridged ethernet devs.  The
virbr0  is a simple  NAT based transit for guest VMs  whcih is safe to configure
for out-of-box connectivity (virbr0 corresponds to "Virtual Networks" 'default'
network in virt manager).
Comment 5 Adam Huffman 2007-06-18 12:14:38 EDT
That sounds fair enough, but shouldn't this be documented e.g. at
http://fedoraproject.org/wiki/Docs/Fedora7VirtQuickStart?  Or have I missed it?

Incidentally, I've just tried using the 'default' network and that has crashed,
but I think the problem is covered by other reports.
Comment 6 Red Hat Bugzilla 2007-07-24 22:14:10 EDT
change QA contact
Comment 7 Cole Robinson 2008-03-12 16:10:43 EDT
Hi, I'm closing this as NOTABUG since there doesn't seem to be an issue here.

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