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Date:      Wed, 9 Mar 2005 17:22:43 -0800
From:      Brooks Davis <brooks@one-eyed-alien.net>
To:        =?iso-8859-1?Q?Jos=E9_Mar=EDa_Gonz=E1lez?= <chema@cs.berkeley.edu>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Creating Multiple Discard Interfaces
Message-ID:  <20050310012243.GA26861@odin.ac.hmc.edu>
In-Reply-To: <20050310001825.GA320@cs.berkeley.edu>
References:  <20050310001825.GA320@cs.berkeley.edu>

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On Wed, Mar 09, 2005 at 04:18:25PM -0800, Jos=E9 Mar=EDa Gonz=E1lez wrote:
> Hi,=20
>=20
> I'm trying to create several discard interfaces on 4.9-RELEASE, and I'm=
=20
> having 2 problems. This is what I see (comments started by //):
>=20
> # ifconfig -a
> de0: ...
> lo0: ...
> // these are my original interfaces
>=20
> # kldload if_disc
>=20
> # ifconfig -a
> de0: ...
> lo0: ...
> ds0: flags=3D8008<LOOPBACK,MULTICAST> mtu 65532
> // surprisingly enough, just loading the if_disc kernel module creates=20
> //	the ds0 interface for me. Well, I can live with that.=20
>=20
> # ifconfig ds0 create
> ifconfig: SIOCIFCREATE: Invalid argument
> # ifconfig disc0 create
> ifconfig: SIOCIFCREATE: Invalid argument
> // This makes sens, as the ds0 interface is already created
>=20
> # ifconfig ds1 create
> ifconfig: SIOCIFCREATE: Invalid argument
> # ifconfig disc1 create
> ifconfig: SIOCIFCREATE: Invalid argument
> // 1st problem: How do I create ds1, ds2, etc.?
>=20
>=20
> // Now I want to get rid of the if_disc module
> # ifconfig ds0 down
> # ifconfig ds0 destroy
> ifconfig: SIOCIFDESTROY: Invalid argument
> #ifconfig disc0 destroy=20
> ifconfig: interface disc0 does not exist
> # kldunload -v -i 4
> Unloading if_disc.ko, id=3D4
> kldunload: can't unload file: Invalid argument
> // 2nd problem: How do I get rid of the if_disc module?

The discard module is not unloadable or clonable before 5.0.  You need
to upgrade to 5.3+ or statically compile in the discard device with an
appropriate count.

-- 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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