[ale] Remove systemd network handling

[Alex Carver]

I'm not using wireless and I'm using a RPi4 which has a physical
Ethernet interface on the SoC independent of the USB ports.

The error comes from my logger which runs on the Pi.  It's making an
outbound connection to the instruments and when the interface goes down,
that's what I get.

On 2021-09-20 18:09, Solomon Peachy via Ale wrote:
> On Mon, Sep 20, 2021 at 04:46:23PM -0700, Alex Carver via Ale wrote:
>> The network service is likely fine and helpful with a laptop that moves
>> around a lot.  A static machine doesn't need that.  I'm hoping this is
>> the fix because there's nothing else that indicates a hardware issue.
> 
> It's worth mentioning that on the RPi, the built-in ethernet interface 
> is attached via USB and as such can't be considered "static", and quirks 
> of the controllers make USB less reliable on the (pre-4) RPis that one 
> might expect.
> 
> If you're using a wireless interface (even the ones built into newer 
> models) link state is inherently dynamic, and any network management in 
> place needs to be able to properly handle links (if not entire devices) 
> randomly coming and going when their underlying bus is inherently 
> hot-pluggable.
> 
>> My data loggers just show various commands timing out and then, when it
>> tries to reconnect automatically, I get an error "no route to host"
> 
> Is this error on the RPi or the data aggregator?
> 
>  - Solomon
> 
> 
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> https://mail.ale.org/mailman/listinfo/ale
> See JOBS, ANNOUNCE and SCHOOLS lists at
> http://mail.ale.org/mailman/listinfo
>