Re: how to use macvtap in kvm guest

xhu <xhu@xxxxxxxxxx> · Fri, 09 Dec 2011 13:22:36 +0800



    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@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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