Hello Serge!

I think that this is, in fact, a bug.

Even using "vepa", the problem is the same.

My XML looks like this now:

---
    <interface type='direct'>
      <mac address='52:54:00:c4:c8:68'/>
      <source dev='ovsbr1' mode='vepa'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' 
function='0x0'/>
    </interface>
---

Same problem, guest IPv4 works, IPv6 does not!

The weird is that, if I start a Router Advertisement in my network, the
guest receive the ICMPv6 and generate its own IPv6 BUT, it can not
"ping6 anywhere".

ONLY "type=bridge" works for both IPv4 and IPv6 guest network.


Here is how I'm configuring my guests using virt-manager:


Screenshot 1 - direct / mode=bridge - related to bug this report

http://i.imgur.com/T602EHU.png


Screenshot 2 - direct / mode=vepa - test you ask me to do

http://i.imgur.com/9MhmMZb.png


Thanks!
Thiago

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https://bugs.launchpad.net/bugs/1279176

Title:
  IPv6 fails when "<interface type='direct'>", on top of OVS

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