From owner-freebsd-questions Sun Jan 2 13:14:58 2000 Delivered-To: freebsd-questions@freebsd.org Received: from scientia.demon.co.uk (scientia.demon.co.uk [212.228.14.13]) by hub.freebsd.org (Postfix) with ESMTP id 13FB415178 for ; Sun, 2 Jan 2000 13:14:37 -0800 (PST) (envelope-from ben@scientia.demon.co.uk) Received: from strontium.scientia.demon.co.uk ([192.168.91.36] ident=exim) by scientia.demon.co.uk with esmtp (Exim 3.092 #1) id 124qgN-000LNv-00; Sun, 02 Jan 2000 19:28:51 +0000 Received: (from ben) by strontium.scientia.demon.co.uk (Exim 3.092 #1) id 124qgN-0000yN-00; Sun, 02 Jan 2000 19:28:51 +0000 Date: Sun, 2 Jan 2000 19:28:51 +0000 From: Ben Smithurst To: Stan Brown Cc: Free BSD Questions list Subject: Re: What is this interface ? Message-ID: <20000102192851.A3602@strontium.scientia.demon.co.uk> References: <200001021757.JAA16707@netcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <200001021757.JAA16707@netcom.com> Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Stan Brown wrote: > I seem to have a network interface that I don't undrestand. An ifconfig > -a gives (in addition to the ones I understand): > > ds0: flags=8008 mtu 65532 > > I'm runing 3.4 STABLE. I can't find anythign in my kernel config that > seems to call for this device, not does it seem to have a man page. > Curiosity is killing me :-) When in doubt, grep the source tree. Look in /sys/net/if_disc.c, it appears to be some form of "discard" interface: /* * Discard interface driver for protocol testing and timing. * (Based on the loopback.) */ Also, from LINT: # The `disc' pseudo-device implements a minimal network interface, # which throws away all packets sent and never receives any. It is # included for testing purposes. You can probably remove it from your kernel config. If this is appearing when you don't have "pseudo-device disc", then that would be odd. -- Ben Smithurst | PGP: 0x99392F7D ben@scientia.demon.co.uk | key available from keyservers and | ben+pgp@scientia.demon.co.uk To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message