[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [libvirt] macvtap not working on kvm

On 12/13/2011 12:59 PM, Amit Tewari wrote:

Hi all,


My test environment

Host os=rhel6.1

Guest os = rhel6.1


Kvm hypervisor


I have made this entry in guest xml file


<interface type='direct'>

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

      <model type='virtio'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>



Now when I start the guest

#virsh start guest


Following macvtap0 is created on host and is shown below

#ip link show macvtap0

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

    link/ether 52:54:00:55:AE:B5brd ff:ff:ff:ff:ff:ff


but when the guest is up and I try to perform


# ifup eth0


It gives following message

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


The interface name may change to ethN(N may be 1 or 2 ...) due to the change of guest interface mac address.
You can log in guest and use command: "ip  link show" to get the value of N.
Then create ifcfg-ethN for it and use "ifup ethN" to start it in guest.


Guest eth interface does not create. What is the problem?


When I checked dmesg on host it gives following message—“macvatp0: ipv6 routers not present”


Please let me know how macvtap work on kvm.


The contents of this e-mail and any attachment(s) are confidential and
for the named recipient(s) only.  
It shall not attach any liability on the originator or NECHCL or its 
affiliates. Any views or opinions presented in  
this email are solely those of the author and may not necessarily reflect the 
opinions of NECHCL or its affiliates.  
Any form of reproduction, dissemination, copying, disclosure, modification, 
distribution and / or publication of  
this message without the prior written consent of the author of this e-mail is 
strictly prohibited. If you have  
received this email in error please delete it and notify the sender 
immediately. . 
-- libvir-list mailing list libvir-list redhat com https://www.redhat.com/mailman/listinfo/libvir-list

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]