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Message-ID: <20230523152317.4cd1b838@hermes.local>
Date: Tue, 23 May 2023 15:23:17 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: Andrea Claudi <aclaudi@...hat.com>
Cc: Vladimir Nikishkin <vladimir@...ishkin.pw>, netdev@...r.kernel.org,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, eng.alaamohamedsoliman.am@...il.com, gnault@...hat.com,
 razor@...ckwall.org, idosch@...dia.com, liuhangbin@...il.com,
 eyal.birger@...il.com, jtoppins@...hat.com
Subject: Re: [PATCH iproute2-next v6] ip-link: add support for nolocalbypass
 in vxlan

On Tue, 23 May 2023 20:37:04 +0200
Andrea Claudi <aclaudi@...hat.com> wrote:

> Stephen, I'll try to summarize the discussion we had in v5 here.
> 
> - We agree that it's a good idea to have JSON attributes printed both
>   when 'true' and 'false'. As Petr said, this makes the code less error
>   prone and makes it clear attribute is supported.
> - I have some concerns about printing options only when non-default
>   values are set. Non-JSON output is mostly consumed by humans, that
>   usually expects something to be visible if present/true/enabled. I
>   know I'm advocating for a change in the iproute output here, and we
>   usually don't do that, but I argue there's value in having a less
>   cluttered and confusing output.
> 
>   For example, let's take what you see with a default vxlan:
>   $ ip link add type vxlan id 12
>   $ ip -j link show vxlan0
>   [...] udpcsum noudp6zerocsumtx noudp6zerocsumrx [...]
> 
>   IMHO printing only "udpcsum" is enough to make the user aware that
>   the "udpcsum" feature is enabled and the rest is off.
> 
> I'm not against Vladimir's change, of course. But I would be very happy
> if we can agree on a direction for the output from now on, and try to
> enforce it, maybe deprecating the "old way" to print out stuff step by
> step, if we find it useful.
> 
> What do you think?
> Andrea

If you look at the other RFC patch set. It does change to always
print the state of all options.