Re: Accurate ECN support in tcpdump/libpcap

[Francois via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

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>
>
> From: Francois <devel.fx.lebail () orange fr>
>
> Date: Fri, 6 Mar 2026 14:36:09 +0100
>
> On 05/03/2026 17:56, Denis Ovsienko wrote:
> > On Wed, 4 Mar 2026 10:46:52 +0100
> > Francois via tcpdump-workers <tcpdump-workers () lists tcpdump org> wrote:
> >
> > > I dont like very much -cleared.
> > > Why not
> > > fin-set/fin-unset
> > > fin-on/fin-off
> > > fin-yes/fin-no
> > > fin-y/fin-n
> > > ?
> > > The last three are shorter.
> >
> > > From this list "on" and "off" to me look better than the other
> > alternatives, but not better than "set" and "cleared".
> >
> > Considering the user-visible part of the solution, it is desirable to
> > introduce filter expressions that are as difficult to misunderstand as
> > possible.  As far as it makes sense to me, "cleared" is the proper term
> > in bitwise arithmetics and it obviously means "set to 0", whereas
> > "unset" could be understood as "never set" or "undefined", that is,
> > "any value".
>
> Set/unset, on/off, true/false, yes/no, y/n, 1/0 are almost synonyms.
>
> > From an operational point of view, I prefer to type fin-y (or fin-1)
> than fin-set, fin-n (or fin-0) than fin-cleared on my command line.
>
>
> --- End Message ---
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