Date: Tue, 3 Dec 1996 14:35:48 +0100 (GMT+0100) From: af@biomath.jussieu.fr (Alain FAUCONNET) To: keithl@wakko.gil.net (Keith Leonard) Cc: questions@freebsd.org Subject: Re: Shutdown of pppd Message-ID: <199612031335.AA07567@iaka.biomath.jussieu.fr> In-Reply-To: <Pine.LNX.3.95.961203071833.28587A-100000@wakko.gil.net> from Keith Leonard at "Dec 3, 96 07:28:22 am"
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Keith Leonard wrote / a ecrit:
> Howdy,
>
> I seem to be having a little problem with shutting down my internet
> connection. On another UN*X (which will remain unnamed) I use the
> following scripts (with small config changes) to start-up and shutdown my
> connection to the net (I am using kernel ppp and not tun):
>
> #!/bin/sh
> ps ax | grep pppd | grep -v grep
> PID=`ps ax | grep pppd | grep -v grep | awk '{print $1}'`
>
> if [ "$PID" = "" ]
> then
> pppd connect 'chat -v "" ATDTXXXXXXX CONNECT ""\
> Name: XXXXXX Password: XXXXXXXXXXX' \
> /dev/cuaa0 38400 :
> fi
I gather that you seem to be using the kernel version of PPP. Same as
the one I use (not on FreeBSD, but that should not be much relevant).
So far, so good.
>
> Not very elegant but it works for getting on - now for getting off:
>
> #!/bin/sh
> pid=`ps ax | grep pppd | grep -v grep | awk '{print$1;}'`
> if [ X${pid} != "X" ] ; then
> echo 'killing pppd, PID=' ${pid}
> kill -9 ${pid}
> route flush
> fi
>
> the route flush seems to work (added for FreeBSD) - Now here is the
> problem:
>
> If I try to reconnect within a short time (less than 10 minutes) pppd (I
> think) goes through the usual and then informs me that the address already
> exist (I assume the ISP assign address - dynamic) and I can get nowhere
> (telnet, ftp, etc). What do I need to clean up the mess that this
> inelegant soulution has produced so that I can relogin without rebooting
> (I'm on a standalone machine).
Sending a KILL signal to pppd is NOT a good idea. This signal is not
catchable and thus pppd exits abruptly. I hasn't got a chance to do
any cleanup, and that might be the cause for your trouble (route flush
should not be required if pppd exited cleanly nevertheless).
I suggest replacing the "kill -9" by "kill -INT" or "kill -2". The
pppd daemon will catch that signal and exit cleanly.
_Alain_
--
Alain FAUCONNET Ingenieur systeme - System Manager AP-HP/SIM
Public Health 91 bld de l'Hopital 75013 PARIS FRANCE
Medical Computing Research Labs Mail: af@biomath.jussieu.fr
Tel: (+33) (0)1-40-77-96-19 Fax: (+33) (0)1-45-86-80-68
I've RTFMed. It says: "Refer to your system administrator"
But... I *am* the system administrator :-]
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