Have the VM and the firewall on the same L2 network. Configure the VM with
a default gateway of the interface of the firewall.

Is it what you're looking for?

On Fri., 23 Aug. 2019, 21:15 Ernest Clyde Chua, <[email protected]>
wrote:

> Good day.
> sorry if i got you guys confused.
> for clarity:
>
> i have a server with two nic, currently one nic is connected to public
> network and the other one is disconnected.
>
> And i have a vm that will be the firewall of other vm inside this
> standalone/selfhosted ovirt.
>
> then i am figuring out how can i pass the vlan ids on the vm or is it
> possible.
>
>
>
>
>
> On Fri, 23 Aug 2019, 7:46 PM Dominik Holler <[email protected]> wrote:
>
>>
>>
>> On Thu, Aug 22, 2019 at 1:18 PM Miguel Duarte de Mora Barroso <
>> [email protected]> wrote:
>>
>>> On Wed, Aug 21, 2019 at 9:18 AM <[email protected]> wrote:
>>> >
>>> > good day
>>> > currently i am testing oVirt on a single box and setup some tagged vms
>>> and non tagged vm.
>>> > the non tagged vm is a firewall but it has limitations on the number
>>> of nic so i cannot attach tagged vnic and wish to handdle vlan tagging on it
>>> >
>>> > is it possible to pass untaged franes internally?
>>>
>>> I think it would fallback to the linux bridge default configuration,
>>> which internally tags untagged frames with vlanID 1, and untags them
>>> when exiting the port. Unless I'm wrong (for instance, we change the
>>> bridge defaults), this means you can pass untagged frames through the
>>> bridge.
>>>
>>> Adding Edward, to keep me honest.
>>>
>>>
>>>
>> I am unsure if I got the problem.
>> If you connect an untagged logical network to a vNIC (virtual NIC of a
>> VM), all untagged Ethernet frames will be forwarded from the host interface
>> (physical NIC or bond).
>> If no tagged logical network is attached to this host interface, VLAN tag
>> filtering is not activated and even tagged Frames would be forwarded to the
>> vNC.
>>
>> Does this answer the question?
>>
>>
>>
>>>
>>>
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