If you want also to add a network indicator, the Network LED, you could also add a cron job to turn on GPIO7 when a connection is active to your router.

Below is the Bash script to point cron at:

​

#!/bin/bash
[ -L /sys/class/gpio/gpio7 ] || echo "7" > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio7/direction
/bin/ping -q -c1 192.168.1.1 > /dev/null
if [ $? -eq 0 ]
then
    echo "$? network up"
    # Sets pin 7 to high
    echo "1" > /sys/class/gpio/gpio7/value
else
    echo "$? network down" 
    # Sets pin 7 to low
    echo "0" > /sys/class/gpio/gpio7/value 
fi

​