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Description of problem:
the guest's mac will change after attach a vnet with the option persistent and then restart it.
Version-Release number of selected component (if applicable):
libvirt-0.9.8-1.el6.x86_64
qemu-kvm-0.12.1.2-2.209.el6.x86_64
kernel-2.6.32-220.el6.x86_64
How reproducible:
100%
Steps to Reproduce:
1. Attach a vnet with the options --persistent
a healthy guest named rhel6.
# virsh attach-interface rhel6 network default vnet1 --persistent
# virsh dumpxml rhel6 | grep -3 vnet1
<interface type='network'>
<mac address='52:54:00:B5:58:B0'/>
<source network='default'/>
<target dev='vnet1'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
2.Dettach the vnet.
#virsh detach-interface rhel6 network --mac 52:54:00:b5:58:b0 --persistent
error: Failed to detach interface
error: invalid argument: no nic of mac 52:54:00:B5:58:B0
3.Restart the guest and check the mac
# virsh destroy rhel6
Domain rhel6 destroyed
# virsh dumpxml rhel6
/*you will find this*/
<interface type='network'>
<mac address='52:54:00:f8:5e:7a'/>
<source network='default'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
#virsh start rhel6
Domain rhel6 started
# virsh dumpxml rhel6 | grep -3 vnet1
<interface type='network'>
<mac address='52:54:00:f8:5e:7a'/>
<source network='default'/>
<target dev='vnet1'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
Actual results:
the mac change from 52:54:00:B5:58:B0 to 52:54:00:f8:5e:7a
Expected results:
the mac should not change
Additional info:
If no the --persistent , it work well
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHSA-2012-0748.html
Description of problem: the guest's mac will change after attach a vnet with the option persistent and then restart it. Version-Release number of selected component (if applicable): libvirt-0.9.8-1.el6.x86_64 qemu-kvm-0.12.1.2-2.209.el6.x86_64 kernel-2.6.32-220.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. Attach a vnet with the options --persistent a healthy guest named rhel6. # virsh attach-interface rhel6 network default vnet1 --persistent # virsh dumpxml rhel6 | grep -3 vnet1 <interface type='network'> <mac address='52:54:00:B5:58:B0'/> <source network='default'/> <target dev='vnet1'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> 2.Dettach the vnet. #virsh detach-interface rhel6 network --mac 52:54:00:b5:58:b0 --persistent error: Failed to detach interface error: invalid argument: no nic of mac 52:54:00:B5:58:B0 3.Restart the guest and check the mac # virsh destroy rhel6 Domain rhel6 destroyed # virsh dumpxml rhel6 /*you will find this*/ <interface type='network'> <mac address='52:54:00:f8:5e:7a'/> <source network='default'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> #virsh start rhel6 Domain rhel6 started # virsh dumpxml rhel6 | grep -3 vnet1 <interface type='network'> <mac address='52:54:00:f8:5e:7a'/> <source network='default'/> <target dev='vnet1'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Actual results: the mac change from 52:54:00:B5:58:B0 to 52:54:00:f8:5e:7a Expected results: the mac should not change Additional info: If no the --persistent , it work well