#!/bin/sh

# Instructions: read the comments for each command, and if necessary, edit
# the command (e.g. replace EAZ with your real EAZ or MSN). Look for lines
# marked with XXX_, which is probably all you need to change.
# If the command is commented out, remove the leading '#' to enable it if
# the command is needed.

# If using dynamic IP addresses:
# Check out the /etc/ppp/ip-up.d/isdnutils and /etc/ppp/ip-down.d/isdnutils
# scripts, to ensure that any routing is done correctly there (the
# ip-up.d/isdnutils script is run after a syncPPP link is established, and the
# ip-down.d/isdnutils script is run after the link goes down).
# You need to have the ppp package installed for those scripts to work.

set -e	# exit on _any_ error

# Get the device name
device=ippp0

# The (dummy) IP addresses
#
# Use 10.0.0.1 for LOCALIP and 10.0.0.2 for REMOTEIP if you have
# dynamic IP addresses; with static address fill in the real values!

LOCALIP=192.168.1.200
REMOTEIP=192.168.1.201

# Configuration (start)

case "$1" in
start)
    # If running kernel 2.0.31 or higher, enable the IP dynamic hack
    # (if needed). See linux/Documentation/networking/ip_dynaddr.txt .
    # Default is: enabled. If you have static IP numbers, you can remove
    # the next line.
    [ -f /proc/sys/net/ipv4/ip_dynaddr ] && echo 5 > /proc/sys/net/ipv4/ip_dynaddr

    # First you need to create the interface(s)
    isdnctrl readconf /etc/isdn/device.conf

    #	verbose num
    # Set verbosity level to <num>.
    # (2 shows the first package of every connection, that is very useful.)
    # WARNING: this is a global parameter, that affects all isdn devices!
    isdnctrl verbose 2

    ifconfig ${device} $LOCALIP pointopoint $REMOTEIP netmask 255.255.255.255
    set +e	# ignore errors from here on

    route del -host $REMOTEIP ${device} 2>/dev/null
    route add -host $REMOTEIP ${device}

    # setting default route here is only useful if this is your only
    # outside connection... The default is ippp0 for the default route.
    route del default 2>/dev/null
    route add default netmask 0 ${device}

    ;;

# Delete the interface
stop)
    set +e	# ignore errors from here on

    isdnctrl dialmode $device off >/dev/null 2>&1

    # Commands to undo the network stuff
    route del $REMOTEIP $device	2> /dev/null
    # only delete default route if set above!
    # The default is to use ippp0 for your default route.
    route del default netmask 0 2> /dev/null
    ifconfig $device down	2> /dev/null
    isdnctrl delif $device	2> /dev/null
    # If this was the master device,
    # the delif will also have removed the slaves.
    ;;

# the rest is generic, don't touch
*)
    echo "Usage: $0 {start|stop}"
    exit 1
    ;;
esac

exit 0