[Bug 76621] New: Bridged networking stopped working after yum update

[Bug 76621] New: Bridged networking stopped working after yum update

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=76621

            Bug ID: 76621
           Summary: Bridged networking stopped working after yum update
           Product: Virtualization
           Version: unspecified
    Kernel Version: Very latest with Fedora 20 yum update 2014-05-21
          Hardware: x86-64
                OS: Linux
              Tree: Fedora
            Status: NEW
          Severity: low
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: hne.jwebwk@eit.se
        Regression: No

Hi KVM,


We just moved to KVM from VirtualBox and VmWare. 

We like the performance improvement but now there is a small problem with
bridged networking.


There is an easy workaround, just don't do "yum update". But I write this since
others might get problems too.





The host machine is HP Z620, dual XEON, 70GB memory, Samsung SSD 840 EVO and
Radeon HD5450

We are running Fedora 20 64 bit.

The guest machines are Windows XP converted from VmWare via VirtualBox to KVM.

We install Fedora, KVM and add the virtual machines and it works.

We did a "yum update" perhaps 3 weeks ago and were still fine.

After "yum update" last week the guest machines can no longer be reached from
the network.

We have reinstalled and things work again and after update the problems happens
again. So it is repeatable.


We think something has changed beween 3 weeks and 1 week ago that break the
feature.







- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - 
This is what we did in more detail.

Standard Fedora from DVD

Add proxy setting in /etc/yum.conf.

yum install openssh-server
systemctl enable sshd.service
systemctl start sshd.service


yum install nano

yum install samba

nano /etc/samba/smb.conf

systemctl enable smb.service
systemctl start smb.service
systemctl enable nmb.service
systemctl start nmb.service




Turn off firewall and selinux

nano /etc/selinux/config
SELINUX=disabled

systemctl stop firewalld.service  
systemctl disable firewalld.service  

reboot 





Install kvm



yum install @virtualization
yum install libvirt


systemctl start libvirtd




Add/Import virtual machines

Copy virtual machine images VirtualDeveloperMachines (VDM) and
VitrualTestMachines (VTM)  if they are not already on disk.
VDMs need two network interfraces one bridged an one NAT. VTMs need only NAT.

virt-manager

Create a NAT network atpcutest with a dhcp 192.168.4.101 to 132

Create new machine.
Give path to the image files
type Windows XP
Give VDMs 2 cores and 3096MB memory
Give VTMs 1 core and 1024MB memory
Set configure bofore install
Set start VM at boot
Set Disk driver to virtio
For VDMs add an extra NIC, Set one NIC to bridged em1 set other NIC to
atpcutest
For VTMs set NIC to atpcutest
Both NICs as virtio
Set Grapchic as VMVGA

After booting VDMs set their static IPs (both)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - 

Doing the above work. Also after rebooting.
After doing "yum update" 2014-05-21 it does not work.

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[Bug 76621] Bridged networking stopped working after yum update

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=76621

Michael Tokarev <mjt@tls.msk.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mjt@tls.msk.ru

--- Comment #1 from Michael Tokarev <mjt@tls.msk.ru> ---
Please report this to fedora bugzilla.  Not everyone is running fedora, and not
everyone even understand what yum is.  This problem is most likely
qemu-related, not kernel, at least it has very small chance to have anything to
do with kvm part of the kernel.  And you completely failed to even mention the
versions, from and to, of the components you upgraded.

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[Bug 76621] Bridged networking stopped working after yum update

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=76621

--- Comment #2 from Henrik <hne.jwebwk@eit.se> ---

It works with kernel version 3.11.10-301.fc20.x86_64.
It does not work with kernel version 3.14.4-200.fc20

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[Bug 76621] Bridged networking stopped working after yum update

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=76621

Henrik <hne.jwebwk@eit.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|Very latest with Fedora 20  |3.14.4-200.fc20 (Very
                   |yum update 2014-05-21       |latest with Fedora 20 yum
                   |                            |update 2014-05-21)

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[Bug 76621] Bridged networking stopped working after yum update

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https://bugzilla.kernel.org/show_bug.cgi?id=76621

--- Comment #3 from Henrik <hne.jwebwk@eit.se> ---
I have updated header with kernel version. Will see if I can report it to
Fedora then.

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[Bug 76621] Bridged networking stopped working after yum update

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=76621

Henrik <hne.jwebwk@eit.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|3.14.4-200.fc20 (Very       |3.14.4-200.fc20
                   |latest with Fedora 20 yum   |
                   |update 2014-05-21)          |

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[Bug 76621] Bridged networking stopped working after yum update

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https://bugzilla.kernel.org/show_bug.cgi?id=76621

Henrik <hne.jwebwk@eit.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Regression|No                          |Yes

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[Bug 76621] Bridged networking stopped working after yum update

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https://bugzilla.kernel.org/show_bug.cgi?id=76621

--- Comment #4 from Henrik <hne.jwebwk@eit.se> ---
I have nw reported this at fedora insted.

https://bugzilla.redhat.com/show_bug.cgi?id=1100228

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[Bug 76621] Bridged networking stopped working after yum update

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https://bugzilla.kernel.org/show_bug.cgi?id=76621

--- Comment #5 from Henrik <hne.jwebwk@eit.se> ---
It still works with 3.14.3-200.fc20.x86_64 if that was of any interest. 

Will now close this report.

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[Bug 76621] Bridged networking stopped working after yum update

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https://bugzilla.kernel.org/show_bug.cgi?id=76621

Henrik <hne.jwebwk@eit.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

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