To keep track of the internet traffic my family is causing, I wrote a little perl script that runs on the Soekris and displays the output of ipfstat. This works because ipf is able to count traffic by using rules such as:

count in on sis0 all
count out on sis0 all

The perl script just parses the output of ipfstat -noia and displays it in a more or less fancy way. You may find the script among other things on the Soekris project site of my homepage.

Perhaps this is of some interest to other Soekris owners.