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Date:      Fri, 28 May 2004 12:40:42 +0400
From:      Yar Tikhiy <yar@comp.chem.msu.su>
To:        Brooks Davis <brooks@one-eyed-alien.net>
Cc:        net@freebsd.org
Subject:   Re: VLAN_MTU (was Re: cvs commit: src/sys/dev/fxp if_fxp.c if_fxpvar.h)
Message-ID:  <20040528084042.GG76909@comp.chem.msu.su>
In-Reply-To: <20040527150228.GB30789@Odin.AC.HMC.Edu>
References:  <200405251449.i4PEnkIa098672@repoman.freebsd.org> <20040525164251.GA3245@ip.net.ua> <20040525173458.GA18554@comp.chem.msu.su> <20040525184757.GA5546@ip.net.ua> <20040526032055.GA42697@comp.chem.msu.su> <20040526064152.GD24738@cell.sick.ru> <20040527141055.GA32704@comp.chem.msu.su> <20040527150228.GB30789@Odin.AC.HMC.Edu>

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On Thu, May 27, 2004 at 08:02:28AM -0700, Brooks Davis wrote:
>
> > > Y> Another way I see is to drop automatic fiddling with VLAN_MTU in
> > > Y> the first place and implement an option for ifconfig(8) so that a
> > > Y> user/admin can control the capability WRT a particular case, e.g.,
> > > Y> disable it if a NIC displays erroneous behaviour in long frame mode.
> > > 
> > > From my point of view this is a good idea.
> > 
> > The longer I've been thinking of the issue, the more I'm inclined
> > to take the latter path.  I believe that it would conform to the
> > good tradition of Unix to offer a user as much control as possible
> > and avoid doing "automagic" tricks behind user's back.
> > 
> > Therefore I'd like to ask the community:  Would anybody mind if
> > vlan(4) gave up playing with VLAN_MTU on parent interfaces
> > while a new option to ifconfig(8), say `vlanmtu', was introduced
> > so that a user could control the feature manually?
> 
> This seems OK as long as you enabled VLAN_MTU by default as I see you
> have just done with fxp.

Thanks for your comment!
Presently all our network interfaces supporting VLAN_MTU have it
enabled by default.

-- 
Yar



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