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From: "Toke Høiland-Jørgensen" <toke@toke.dk>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Julian Orth <ju.orth@gmail.com>,
	WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: network namespace wireguard routing [Was: Re: Userspace Networking Stack + WireGuard + Go]
Date: Thu, 14 Jan 2021 11:44:45 +0100	[thread overview]
Message-ID: <87mtxbsspu.fsf@toke.dk> (raw)
In-Reply-To: <CAHmME9rMJ2R3X0iUdYZhGfL6+J0xRyrnvmBws-6T4itP0tZFmA@mail.gmail.com>

"Jason A. Donenfeld" <Jason@zx2c4.com> writes:

> On Wed, Jan 13, 2021 at 5:46 PM Toke Høiland-Jørgensen <toke@toke.dk> wrote:
>> 5. also requires CAP_SYS_ADMIN (and I think by extension, so does 3.,
>> and 4.). From 'man setns':
>>
>>        Network, IPC, time, and UTS namespaces
>>               In order to reassociate itself with a new network, IPC,
>>               time, or UTS namespace, the caller must have the
>>               CAP_SYS_ADMIN capability both in its own user namespace
>>               and in the user namespace that owns the target namespace.
>
> For this, you just create a new user namespace first. You can try it
> yourself from the command line:
>
> zx2c4@thinkpad ~ $ unshare -n
> unshare: unshare failed: Operation not permitted
> zx2c4@thinkpad ~ $ unshare -Un
> nobody@thinkpad ~ $ ip a
> 1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

Ah, right, of course, silly me :)

-Toke

  reply	other threads:[~2021-01-14 10:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13 16:04 Userspace Networking Stack + WireGuard + Go Jason A. Donenfeld
2021-01-13 16:26 ` Julian Orth
2021-01-13 16:33   ` network namespace wireguard routing [Was: Re: Userspace Networking Stack + WireGuard + Go] Jason A. Donenfeld
2021-01-13 16:40     ` Julian Orth
2021-01-13 16:46     ` Toke Høiland-Jørgensen
2021-01-13 16:49       ` Jason A. Donenfeld
2021-01-14 10:44         ` Toke Høiland-Jørgensen [this message]
2021-01-15  8:12   ` Userspace Networking Stack + WireGuard + Go Marc-André Lureau
2021-01-14 23:25 ` Jason A. Donenfeld

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