Network namespaces in FreeBSD
steve at sohara.org
Wed Dec 23 19:53:55 UTC 2020
On Wed, 23 Dec 2020 19:32:43 +0100
"Kristof Provost" <kp at FreeBSD.org> 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 freebsd.org>
> > 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?
My understanding was that network namespaces are primarily a way of
managing multiple routing tables which is exactly what setfib is for,
while setfib is mostly useful in conjunction with jails it is not
connected with jails in any way it is purely a network level thing which
AIUI linux network namespaces are.
Vnet jails are just jails with their own network stack, which
achieves much the same results but only for jails.
 Jails can be set to have a default fib - I use fibs this way to connect
jails to VPNs for various purposes.
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