[PATCH 0/7] Allow changing the transit namespace

[Bruno Wolff III]

On Sat, Sep 08, 2018 at 14:18:34 +0200,
  Julian Orth <ju.orth at gmail.com> wrote:
>
>wg set <device> transit-net <pid|file-path>
>
>The distinction is made based on the format of the argument. If it is an
>unsigned 32 bit integer, then it is interpreted as a process id.
>Otherwise it is interpreted as a file path. /proc does not need to be
>mounted to use the process id interpretation. To force the
>interpretation as a file-path, use a ./ prefix.

Ambiguity is generally not a good idea (especially for security applications). 
It's not my decision, but I'd rather see the syntax make it clear what the type 
of the parameter is supposed to be.