Trough the LEAF configuration menu type 1 to access to the network configuration menu and 1 again to edit your /etc/network/interfaces file. Enter the following information:

# Loopback interface.
auto lo
iface lo inet loopback

# Declare the internal interface
#
auto eth0
iface eth0 inet static
      address 192.168.1.254
      masklen 24
      broadcast 192.168.1.255

# Declare the external (ppp) interface
auto ppp0
iface ppp0 inet ppp
      pre-up startadsl
      provider eagle
      post-down stopadsl 

In this /etc/network/interfaces file the lo, ppp0 and eth0 interfaces are brought up automatically when the ifup -a statement is executed at boot time by the /etc/init.d/networking script.

The "iface ppp0 inet ppp" section defines the external address of the router. When the ifup ppp0 command is executed, it first execute the /usr/sbin/startadsl script then it executes the pon eagle command which brings up the ppp0 interface. The startadsl script is the following:

#!/bin/sh

if [ `pidof pppd` ] ; then
        logger "ppp connection seems already started!"
        exit
fi

# Check if usbdevfs is mounted. If not mount it
[ "$(mount | grep 'usbdevfs')" ] || mount -t usbdevfs none /proc/bus/usb

sleep 2

[ "$(showstat | grep 'operational')" ] || adictrl -d

# Wait for modem "operational" state:
adictrl -s

# Get the ADI network interface name:
INTERFACE=`adictrl -i`

# Configure the ADI network interface:
ip link set $INTERFACE up 

When the ifdown ppp0 command is executed, the poff eagle command is executed then the stopadsl script. The stopadsl script looks like:

#!/bin/sh
# Get the ADI network interface name:
INTERFACE=`adictrl -i`
# Remove the ADI network interface:
ip link set $INTERFACE down

The "iface eth0 inet static" defines the internal address of the router.

Backup the etc.lrp package.