[libvirt] how to use macvtap in kvm guest

[xhu]

  On 12/09/2011 12:28 PM, Amit Tewari wrote:
>
> Hi
>
> I am creating macvtap0 interface on my eth1 interface.
>
> ip link show macvtap0
>
> 133: macvtap0 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc 
> mq state UNKNOWN qlen 500
>
>     link/ether 3e:63:18:f3:49:63 brd ff:ff:ff:ff:ff:ff
>
> guest interface file-
>
> <interface type='direct'>
>
> <mac address='3e:63:18:f3:49:63'/>
>
> <source dev='eth0' mode='bridge'/>
>
> <model type='virtio'/>
>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 
> function='0x0'/>
>
> </interface>
>
> Now when I do-
>
> Virsh define guest works fine
>
> But when I do virsh start guest
>
can guest gain ip?
>
> Dmesg shows error
>
> macvtap0:no ipv6 routers present
>
> libvirtd[24907]: segfault at 0 ip 0000003e22280062 sp 00007fd3057f8cb8 
> error 4 in libc-2.12.so[3e22200000+187000]
>
> and even if guest starts its eth interface is not created
>
could you provide your host os, guest os, libvirt, qemu-kvm version?
it is fine as i tried, no segment fault message and the guest can get ip.
>
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