[arch-general] net-auto-wired in systemd - ifplugd failed with exit code 3

[Oon-Ee Ng]

On Tue, May 8, 2012 at 9:34 PM, Tom Gundersen <teg at jklm.no> wrote:
> On Tue, May 8, 2012 at 3:22 PM, Oon-Ee Ng <ngoonee.talk at gmail.com> wrote:
>> I do in fact get exit code 3 when running the ExecStart line by hand,
>> and removing -w seems to take care of it. -w seems to wait for link
>> detection, but it seems anything it returns (in the above case I got 3
>> because I'm currently on wireless and have no LAN to test it on) would
>> cause an error? The rc.d script doesn't seem to use -w, so I'm
>> wondering why that was inserted for the service file.
>
> We'd like to consider the network.target to be up only once we have
> connected to the network (so that other services can rely on this).
>
> I only fixed this up as it was buggy when I found it, but it might be
> that this behavior is not desired at all (I don't use this stuff). How
> would you expect this to work?

I was under the impression that the net-auto-wire{d,less} services
would not guarantee that network WOULD be up, they're just monitors
that bring network up IF there's a connection. So, for example, if I
start net-auto-wired.service now when I'm on-the-go, 'active' would
indicate that its currently monitoring for a LAN connection (ie -
ifplugd is started), not that there IS a connection ready.

I'm not very familiar with systemd myself, but it seems to (the
uneducated) me that if network.target should only be up when there's a
usable connection, then net-auto-* should not provide/before/whatever
network.target. How does (for example) networkmanager work? From a
quick grep, it seems to have two service files, though since I don't
use it I can't pretend to understand how they're used.