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[libvirt] how to use macvtap in kvm guest



Hi

 

I am creating macvtap0 interface on my eth1 interface.

ip link show macvtap0

133: macvtap0 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

 

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


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