[ovirt-users] Assigned ipv6 vm addreses

Yevgeny Zaspitsky yzaspits at redhat.com
Sun Sep 25 14:28:30 UTC 2016

Adding users list back (my fault ;-) )

On Sun, Sep 25, 2016 at 4:20 PM, Allen Warren <dallenwarren at gmail.com>

> Thanks for the reply.  I figured it out yesterday.  I just edited the VM
> Custom Mac Address and it works like a champ now...
> I will setup that range and it should be good to go..  I am running oVirt
> 4.0..  oVirt is a nice product, beats the heck out of Xen Server..
> On Sun, Sep 25, 2016 at 6:57 AM, Yevgeny Zaspitsky <yzaspits at redhat.com>
> wrote:
>> oVirt does not produce IP addresses, but it allocates MAC addresses to
>> vNics on VMs it creates.
>> A MAC address serves as the base for an IPv6 address allocation (either
>> by IPv6 router advertisement for global addresses or by an operation system
>> for local addresses).
>> BTW, 2 vNics with the same MAC address in the same LAN, would cause layer
>> 2 (Ethernet) malfunctioning too.
>> In order to make the 2 oVirt's produce different MAC addresses you need
>> to adjust the definition of the MAC-pool ranges to be non-overlapping each
>> to another.
>> You could find MAC-pool definitions under a DC definitions in v4.0 and
>> under a cluster in v4.1.
>> Regards,
>> Yevgeny
>> On Sat, Sep 24, 2016 at 5:44 PM, Allen Warren <dallenwarren at gmail.com>
>> wrote:
>>> I have two oVirt servers running as local servers on the same network.
>>> How do I prevent the servers from creating the same ipv6 address for two
>>> different vm's. If I start a vm on the first server and then start one on
>>> the second server the ipv6 addresses are the same..
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
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