how to completely makes an interface down?

[h bagade]

On Sat, Jan 26, 2013 at 6:22 PM, Dave Duchscher <daved at tamu.edu> wrote:

> On Jan 26, 2013, at 7:05 AM, h bagade wrote:
>
> > I've found a patch which is going to do what I really want:
> > http://lists.freebsd.org/pipermail/freebsd-net/2010-December/027196.html
> >
> > but when I apply it on my freebsd 8.2 with em cards, nothing happens! not
> > even sysctl "dev.em.X.down_disables_link", which is supposed to be added
> > after applying patch, exists! what wrong with what I've done?
>
> Not sure. I would make sure that your new kernel is the kernel that is
> being used. We use a different kernel configuration file so that a
> simple uname command tells us that the right kernel is installed.
>
> We use that patch here with 8.3 and it works as advertised. I do wish
> there was a way to drop the link of the port without kernel mods.
> Understandably with the out of band management protocols, the internal
> interfaces really like to keep link alive so you can connect to the
> system's management console, do wake on lan, etc.
>
> --
> DaveD
>
>
I gradually apply the patch and it works:) Thanks all.