how to completely makes an interface down?

[h bagade]

On Thu, Jan 24, 2013 at 11:20 PM, John-Mark Gurney <jmg at funkthat.com> wrote:

> h bagade wrote this message on Thu, Jan 24, 2013 at 16:59 +0330:
> > I'm searching for a method or configuration which when I make the
> interface
> > down, the led goes off. Currently the led still remains on when I
> shutdowns
> > the interface! Is there any way to do this?
>
> Not all ethernet drivers disable the PHY when you down the interface...
> You can try to use:
> ifconfig <int> media none
>
> to shutdown the PHY, but the em driver on 9.1 doesn't have it, but re
> (7.2-R and -current) and msk (-current) seems to have it...
>
> Also, why do you want the led to go off?  Remeber, the led is just an
> indication if there is a link established, not what will happen to the
> packets that are received...
>
> --
>   John-Mark Gurney                              Voice: +1 415 225 5579
>
>      "All that I will do, has been done, All that I have, has not."
>

I've tried the command on freebsd 8.2 with em card but doesn't work as you
mentioned.
I need such an operation to disable the connection and yes, not the led but
the link establishment itself. Is there a way to have this option on em and
igb drivers on freebsd 8.2?