[Bug 286179] Passing a vlan interface to a vnet jail result in a stuck dying state

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286179

--- Comment #26 from Peter Ganzhorn <[email protected]> ---
(In reply to Zhenlei Huang from comment #22)
The lines you mentioned also caught my eye, you may very well be up to
something there as well. My understanding of the code isn't good enough for a
clear opinion in my own though.
As far as I understood the CURVNET_SET was introduced when pfil was to be used
in the code and wasn't required for anything else.

The only thing I can tell for sure is that the addition of the missing
CURVNET_RESTORE() definitely had an impact on the returning of the network
interface to the host.
This works rock solid now and failed almost always before.

I noticed a zfs dataset that is jailed can be kept available/manageable and
mounted on the host while the jail is running while testing different
configuration options. Is that intended to be actually possible or should the
dataset become invisible to the host while being delegated to a jail?

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