LinuxQuestions.org - pppd doesn't run ip-down on disconnect

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pppd doesn't run ip-down on disconnect

I'm running Slackware 9.1 straight off the CD right now, and I'm having an issue with PPP. I'm configuring PPP with the default pppsetup script using PAP on an ISA Jaton Communicator V.90 (Intel/Ambient MD5662 chipset) on ttyS1. This is on a VIA Apollo Pro 133a chipset motherboard, an Asus P3V4X to be exact. If any other hardware is relevant, let me know.

Anyway, PPP is running fairly well besides this: After I run ppp-stop I have to manually execute the ip-down script (or reboot) before I can run ppp-go again. If I try to connect without executing ip-down, it simply prints "connect script failed" after about 60 seconds.

I know you probably need more information to help, but I'm a *nix newbie, so I don't know what this would be. Which file would it print the details on the connection attempt to? Is there another script which PPPd uses to execute the ip-down script which I can post here?

Thanks for any help you can offer
Michael Salivar

Not sure it will help but try disconnecting using ppp-off. Otherwise edit the ppp-stop script and add a line that will force ip-down to run.

Thanks nazmin, it was an interesting read, but unfortunately didn't provide much insight on this matter, unless I'm just missing something

Gnashley:
Ok, I found the ppp-stop and ppp-off scripts, and their results are identical. Upon further inspections, that's because the scripts are identical.

Now, I'm getting decent at editing config files and such, but scripting is completely foreign to me. So, here's the script, and then what I'm guessing to include... but I figure I don't have a chance.

Code:

#!/bin/bash

#

# This is the standard ppp-off script that comes with ppp-2.?.?, it's

# been expanded to include the -d option for pppsetup. (1-17-98)

#

######################################################################

#

# Determine the device to be terminated.

#

if [ "$1" = "" ]; then

        DEVICE=ppp0

elif [ ! "$1" = "-d" ]; then

        DEVICE=$1        

elif [ "$1" = "-d" ]; then

        DEVICE=ppp0        

elif [ ! "$1" = "" ] && [ "$2" = "-d" ]; then

        DEVICE=$1        

fi

######################################################################

#

# This just checks if demand dialing is running, if so it

# says Demand Dialing Stoped.



if ps x | fgrep "options.demand" 1> /dev/null 2> /dev/null ; then

        D="echo Demand Dialing Stoped."

fi



#

# If the ppp0 pid file is present then the program is running. Stop it.

if [ -r /var/run/$DEVICE.pid ]; then

        kill -INT `cat /var/run/$DEVICE.pid`

#

# If the kill did not work then there is no process running for this

# pid. It may also mean that the lock file will be left. You may wish

# to delete the lock file at the same time.

        if [ ! "$?" = "0" ]; then

                killall -INT pppd 2>/dev/null

                rm -f /var/run/$DEVICE.pid

                rm -f /var/lock/LCK*

                echo "ERROR: No pppd process running, removed stale pid file."

                exit 1

        fi

#

# Success. Let pppd clean up its own junk.

        echo "PPP link to [$DEVICE] terminated."

        $D

        if [ "$1" = "-d" ]; then

        pppd file "/etc/ppp/options.demand" || exit 1

        echo "Demand Dialing Started."

        exit 0

        elif [ "$2" = "-d" ]; then

        pppd file "/etc/ppp/options.demand" || exit 1

        echo "Demand Dialing Started."

        exit 0

        else

        exit 0

fi

fi

#

# The ppp process is not running for ppp0

echo "ERROR: PPP link is not active on: [$DEVICE]"

exit 1

And my guess is something like this:

Code:

# If the ppp0 pid file is present then the program is running. Stop it.

if [ -r /var/run/$DEVICE.pid ]; then

        kill -INT `cat /var/run/$DEVICE.pid`

        exec /etc/ppp/ip-down

That's the third non-commented section down. Am I anywhere near the ballpark with this? I get the feeling it couldn't possibly be so simple. Anyway, I'm off to bed, thanks again for the help.

Wow, an operating system that makes sense! Be gone Microsoft!

Anyway, it's not working. I suspect that it's my modem being finicky, as it loves to do. I'm thinking the ip-down script is getting run before pppd has been fully killed, and my modem can't cope. Strangely, when ppp-stop executes ip-down, not only am I not able to connect, but running ip-down manually doesn't fix it. Instead, I have to reboot.

I'm hoping the 'wait' command will solve my problems. I'm going to try to figure this out on my own though, so please, nobody explain it to me until I give up in a hateful fit of angry frustration :D