[ovirt-users] Re: IPv6 Support

2021-06-28 Thread Martin Perina 
On Mon, Jun 28, 2021 at 7:20 AM Ales Musil  wrote:

>
>
> On Sun, Jun 27, 2021 at 12:48 PM David White via Users 
> wrote:
>
>> Hello,
>>
>
> Hi,
>
>
>> Reading
>> https://www.ovirt.org/documentation/administration_guide/index.html#IPv6-networking-support-labels,
>> I see this tidbit:
>>
>>- Dual-stack addressing, IPv4 *and* IPv6, is not supported
>>- Switching clusters from IPv4 to IPv6 is not supported.
>>
>> If I'm understanding this correctly... does that mean I cannot run some
>> VMs with IPv4, and other VMs with IPv6, in the same cluster?
>>
>
> This applies mostly to host networking, there are cases when host
> networking dual stack works fine, the issue is that it has many quirks.
> oVirt cannot ensure that those quirks won't happen which might break your
> connection.
> In VM networks oVirt cares only for L2, with OVN it can also care for L3.
> So configuration on your VM networks is up to you.
> I can imagine that you could safely mix IPv4 and IPv6 for VM networks
> without breaking any hosts, but I did not try that personally.
>
>
>> If so, that's incredibly disappointing and frustrating.
>>
>> Is Dual-stack addressing a possible feature request?
>>
>
> You can fill RFE but I am afraid that it won't get far due to lack of
> manpower.
>

As mentioned above there are many things in dual stack which could be setup
incorrectly and thus breaking the whole oVirt. And it's almost impossible
to mention all possible corner cases into the documentation. So in general
dual stack should work, but due to above it just cannot be marked as
supported.

But if you encounter some issue when running dual stack feel free to file a
bug, so we can investigate.

>
>
>> IPv4 addresses are expensive... and I have a couple of customers who only
>> needs IPv6, so would really prefer to avoid having to pay for IPv4
>> addresses for them.
>>
>> Sent with ProtonMail  Secure Email.
>>
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>>
>
> Regards,
> Ales
>
>
> --
>
> Ales Musil
>
> Software Engineer - RHV Network
>
> Red Hat EMEA 
>
> amu...@redhat.comIM: amusil
> 
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>


-- 
Martin Perina
Manager, Software Engineering
Red Hat Czech s.r.o.
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[ovirt-users] Re: IPv6 Support

2021-06-27 Thread Ales Musil 
On Sun, Jun 27, 2021 at 12:48 PM David White via Users 
wrote:

> Hello,
>

Hi,


> Reading
> https://www.ovirt.org/documentation/administration_guide/index.html#IPv6-networking-support-labels,
> I see this tidbit:
>
>- Dual-stack addressing, IPv4 *and* IPv6, is not supported
>- Switching clusters from IPv4 to IPv6 is not supported.
>
> If I'm understanding this correctly... does that mean I cannot run some
> VMs with IPv4, and other VMs with IPv6, in the same cluster?
>

This applies mostly to host networking, there are cases when host
networking dual stack works fine, the issue is that it has many quirks.
oVirt cannot ensure that those quirks won't happen which might break your
connection.
In VM networks oVirt cares only for L2, with OVN it can also care for L3.
So configuration on your VM networks is up to you.
I can imagine that you could safely mix IPv4 and IPv6 for VM networks
without breaking any hosts, but I did not try that personally.


> If so, that's incredibly disappointing and frustrating.
>
> Is Dual-stack addressing a possible feature request?
>

You can fill RFE but I am afraid that it won't get far due to lack of
manpower.


> IPv4 addresses are expensive... and I have a couple of customers who only
> needs IPv6, so would really prefer to avoid having to pay for IPv4
> addresses for them.
>
> Sent with ProtonMail  Secure Email.
>
> ___
> Users mailing list -- users@ovirt.org
> To unsubscribe send an email to users-le...@ovirt.org
> Privacy Statement: https://www.ovirt.org/privacy-policy.html
> oVirt Code of Conduct:
> https://www.ovirt.org/community/about/community-guidelines/
> List Archives:
> https://lists.ovirt.org/archives/list/users@ovirt.org/message/X2UCDQGR2ZBVHOTTJW6TSGJZ5XFDN5TZ/
>

Regards,
Ales


-- 

Ales Musil

Software Engineer - RHV Network

Red Hat EMEA 

amu...@redhat.comIM: amusil

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[ovirt-users] Re: IPv6 Support

2021-06-27 Thread Derek Atkins 

I have dual stack VMs in my deployment and it works fine.
I suspect this is talking about the engine and host infrastructure.

-derek
Sent using my mobile device. Please excuse any typos.
On June 27, 2021 6:47:59 AM David White via Users  wrote:

Hello,
Reading 
https://www.ovirt.org/documentation/administration_guide/index.html#IPv6-networking-support-labels, 
I see this tidbit:

Dual-stack addressing, IPv4 and IPv6, is not supported
Switching clusters from IPv4 to IPv6 is not supported.
If I'm understanding this correctly... does that mean I cannot run some VMs 
with IPv4, and other VMs with IPv6, in the same cluster?

If so, that's incredibly disappointing and frustrating.

Is Dual-stack addressing a possible feature request?
IPv4 addresses are expensive... and I have a couple of customers who only 
needs IPv6, so would really prefer to avoid having to pay for IPv4 
addresses for them.



Sent with ProtonMail Secure Email.


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