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Date:      Thu, 29 Sep 2005 16:15:24 -0700
From:      Brooks Davis <brooks@one-eyed-alien.net>
To:        Fredrik Lindberg <fli+freebsd-current@shapeshifter.se>
Cc:        Yar Tikhiy <yar@comp.chem.msu.su>, freebsd-current@freebsd.org
Subject:   Re: "ifconfig -vlandev" syntax
Message-ID:  <20050929231524.GB18164@odin.ac.hmc.edu>
In-Reply-To: <433C14EE.6010105@shapeshifter.se>
References:  <20050922104104.GA13539@comp.chem.msu.su> <20050925213741.GG15981@odin.ac.hmc.edu> <20050928110413.GE86457@comp.chem.msu.su> <433C14EE.6010105@shapeshifter.se>

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On Thu, Sep 29, 2005 at 06:23:10PM +0200, Fredrik Lindberg wrote:
> Yar Tikhiy wrote:
> >On Sun, Sep 25, 2005 at 02:37:41PM -0700, Brooks Davis wrote:
> >
> >>On Thu, Sep 22, 2005 at 02:41:05PM +0400, Yar Tikhiy wrote:
> >>
> >>>As our ifconfig(8) is growing more options for special interface
> >>>types, inconsistencies sneak into their syntax.  In particular,
> >>>-vlandev takes a useless argument (vlan(4) cannot attach to more
> >>>than one parent anyway) while, e.g., -carpdev doesn't need one.
> >>>Personally, I like the latter since having to type unneeded words
> >>>on the command line annoys me.  Do you think that making -vlandev
> >>>need no arguments in CURRENT would break many existing things?
> >>
> >>I agree the argument is useless.  Unfortunatly, it's going to be hard to
> >>deprecate the old syntax so we may need to keep it around.
> >
> >
> >Alas, there doesn't seem to exist an easy way to support both
> >syntaxes in the ifconfig(8) parameter parser.  Perhaps we can
> >survive the pain of syntax change in CURRENT only, with a
> >heads-up message sent, release notes updated, etc?  I wonder
> >if many people use "ifconfig -vlandev XXX" in automated tools.
> >
>=20
> Why not use something simple such as the following (maybe even
> without that printf().
>=20
> root@genesis> ./ifconfig vlan0 create
> root@genesis> ./ifconfig vlan0 vlan 1 vlandev em0
> root@genesis> ./ifconfig vlan0 -vlandev
> root@genesis> ./ifconfig vlan0 vlan 1 vlandev em0
> root@genesis> ./ifconfig vlan0 -vlandev em0
> Passing interface to -vlandev is deprecated.

Excellent, this is the perfect solution.  Let's get something like this
committed and MFC'd so it goes out in 6.0.

-- Brooks

--=20
Any statement of the form "X is the one, true Y" is FALSE.
PGP fingerprint 655D 519C 26A7 82E7 2529  9BF0 5D8E 8BE9 F238 1AD4

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