Received email from Chris concerning this.
Chris thought that maybe the problem is that when you run the script, it appears that it will use the default value of 255.255.255.0 for the subnet mask if you just hit enter. Unfortunately, I do not know how to make that happen, so I have updated the howto with more explicit instructions regarding the inputting of the IP and subnet addresses.
I also added tetex-latex to the yum install portion of the Howto as I guess many folks will want to generate pdf forms with sql-ledger.
I'm glad this small contribution has been of value to folks. Make sure that you include david_d in well-wishing as it was his forum post that I used as the basis for the howto.
-Dev