Date: Fri, 14 Jun 1996 18:54:41 +0100 From: "Gary Palmer" <gpalmer@FreeBSD.ORG> To: Branson Matheson <branson@widomaker.com> Cc: Carey Nairn <cp_nairn@cc.utas.edu.au>, FreeBSD-Questions@FreeBSD.ORG Subject: Re: User PPP question Message-ID: <9894.834774881@palmer.demon.co.uk> In-Reply-To: Your message of "Fri, 14 Jun 1996 07:36:44 EDT." <199606141136.HAA07912@garion.hq.ferg.com>
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Branson Matheson wrote in message ID
<199606141136.HAA07912@garion.hq.ferg.com>:
> >is there a way of determining whether an interface is connected
> >(particularly tun0) without trying to send something (e.g. ping
> >packets) across the interface ? What I want to do is find out if the
> >interface is currently connected and iff it is then download mail from my
> >ISP.
> ifconfig -u | grep tun0
root@palmer:/> ifconfig -au
[--SNIP--]
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1524
inet 158.152.50.150 --> 158.152.1.222 netmask 0xffff0000
[--SNIP--]
The interface is always `up' and `running' while the `ppp' program is
attached to the device as otherwise the ppp program won't get any
packets sent to it and it won't know when to auto dial.
There is *NO* automated way of doing this that I know of, short of
writing a program which interrogates port 3000, which will need some
smarts to do the parsing of the prompt(s) that you get presented with.
Gary
--
Gary Palmer FreeBSD Core Team Member
FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info
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