[ovs-discuss] OVS virtual devices and network namespaces

Maksym Planeta mplaneta at os.inf.tu-dresden.de
Tue Nov 26 18:46:26 UTC 2019


Thanks. I switched from GRE tunneling to VxLAN tunneling, which does not 
create these devices.

On 26/11/2019 19:26, Ben Pfaff wrote:
> On Tue, Nov 26, 2019 at 09:23:58AM +0100, Maksym Planeta wrote:
>> I want to configure OVS to communicate between containers. I configure OVS
>> and see it creating some additional interfaces, like gre, or system. But
>> when I create a container with an isolated network namespace these devices
>> are still visible.
>>
>> How do I make OVS devices invisible inside the container unless I explicitly
>> say so?
> ...
>> I would not expect gre0, gretap0, and erspan0 to be present.
> 
> These aren't OVS devices.  As I understand it, they're global system
> devices that are always present in every namespace if their drivers are
> loaded.  A Google search for gretap0 turns this up as the first hit, for
> example: https://github.com/lxc/lxd/issues/3338
> 

-- 
Regards,
Maksym Planeta


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