From owner-freebsd-newbies  Mon Sep 11  4:58:41 2000
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Date: Sun, 10 Sep 2000 23:07:08 +0100
From: Nik Clayton <nik@freebsd.org>
To: Junichi Saito <j.saito@wanadoo.fr>
Cc: Jaroshenko Serge <jaroshenko@mail.ru>,
	freebsd-newbies@FreeBSD.ORG
Subject: Re: your mail
Message-ID: <20000910230708.A36061@canyon.nothing-going-on.org>
References: <Pine.BSF.4.21.0009041101550.260-100000@freebsd.merlin.ru> <Pine.LNX.4.21.0009040923160.236-100000@kintaro.linux.org>
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In-Reply-To: <Pine.LNX.4.21.0009040923160.236-100000@kintaro.linux.org>; from j.saito@wanadoo.fr on Mon, Sep 04, 2000 at 09:29:43AM +0200
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On Mon, Sep 04, 2000 at 09:29:43AM +0200, Junichi Saito wrote:
> In my case, ppp as well as tun are compiled in the kernel. When the
> command 'ifconfig -a' is run, they should show up: so dose indeed ppp0 but
> not tun0.

The tun? interfaces are created when a device tries to read from them.

For example, I currently have tun0, because of my PPP link.

    # ifconfig -a | grep tun
    tun0: flags=8150<POINTTOPOINT,RUNNING,PROMISC,MULTICAST> mtu 1500

If I now try and read from /dev/tun1, using cat(1), the interface tun1
will be created.

    # cat < /dev/tun1
    ^C
    # ifconfig -a | grep tun
    tun0: flags=8150<POINTOPOINT,RUNNING,PROMISC,MULTICAST> mtu 1500
    tun1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500

For you, tun0 will be created when you run a program that tries to use it.

N
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