[libvirt] macvtap support in libvirt 0.9.8

Amit Tewari Amit.Tewari at nechclst.in
Mon Dec 12 09:52:17 UTC 2011

Hi all,


My test environment

Host os=rhel6.1

Guest os = rhel6.1


Kvm hypervisor


I am creating a macvtap interface on host machine at eth0 interface

#ip link show macvtap0

51: macvtap0 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
state UNKNOWN qlen 500

    link/ether 1e:aa:f7:43:7e:3d brd ff:ff:ff:ff:ff:ff


I have made this entry in guest xml file


<interface type='direct'>

      <mac address=1e:aa:f7:43:7e:3d'/>

      <source dev='eth0' mode='bridge'/>

      <model type='virtio'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x03'



Now when I start the guest 

#virsh start guest

It gives following message

"Bringing up interface eth0:  Device eth0 does not seem to be present,
delaying initialization.



Guest eth interface does not create. what is the problem.


Please let me know what else we need to do to make macvtap work on kvm.

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