Network namespaces in FreeBSD

Arthur Chance freebsd at
Thu Dec 24 09:07:21 UTC 2020

On 23/12/2020 18:40, Ihor Antonov wrote:
> On 12/23/20 10:32 AM, Kristof Provost wrote:
>> On 23 Dec 2020, at 19:22, Steve O'Hara-Smith wrote:
>>> On Wed, 23 Dec 2020 16:48:11 +0000
>>> Ameya Deshpande via freebsd-questions <freebsd-questions at>
>>> wrote:
>>>> Hi,
>>>> I am new to FreeBSD. I was wondering if there is concept like Network
>>>> Namespaces in FreeBSD, like it is in Linux?
>>>     There is something similar see man setfib for details.
>> I’ve only briefly played with linux network namespaces, but aren’t
>> vnet jails much closer to that?
> I have more experience with Linux than with FreeBSD, so I don't know for
> sure what setfib is about.
> VNET jails is the closest thing that comes to mind when comparing to
> Linux network namespaces. Unlike Linux, in a jail you will get all other
> namespaces separated too (e.g. mount, pid etc.)
> Unfortunately I don't know if it is possible to get exactly same
> behavior as in Linux - share all other namespaces except for network
> stack. I imagine you can get something like this with Capsicum, but it
> would require making changes to the app.

Wouldn't a VNET jail rooted at / effectively be that?

The number of people predicting the demise of Moore's Law doubles
every 18 months.

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