[systemd-devel] 99-default.link which such a high number ?

[Mantas Mikulėnas]

On Fri, Sep 25, 2020, 17:46 Francis Moreau <francis.moro at gmail.com> wrote:

> Hello,
>
> I want to override /usr/lib/systemd/network/99-default.link so I need
> to create a file starting with "99-" prefix.
>
> This doesn't seem logical to me because the numbers are supposed to
> encode the priority however nothing is left to the user if the
> defaults used is 99.
>

It depends on whether the _first_ matching file is used, or whether the
_last_ matching file is used – different programs choose differently. (If
the program merges all files, it still depends on whether the first value
of a particular setting is used, or whether the last one is used.)

As mentioned in systemd.link(5), udev only chooses one .link file per
interface – just the first one that matched – therefore 00 is the highest
priority.
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