Date: Sun, 2 Jan 2000 19:28:51 +0000 From: Ben Smithurst <ben@scientia.demon.co.uk> To: Stan Brown <stanb@netcom.com> Cc: Free BSD Questions list <freebsd-questions@freebsd.org> Subject: Re: What is this interface ? Message-ID: <20000102192851.A3602@strontium.scientia.demon.co.uk> In-Reply-To: <200001021757.JAA16707@netcom.com> References: <200001021757.JAA16707@netcom.com>
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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<LOOPBACK,MULTICAST> 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.
--
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