Code review comment for lp:~rodsmith/checkbox/network-fixes

I've implemented most of the changes suggested by Daniel. The one exception was a change to make a loop a bit more "Pythonic." My level of Python-fu is still fairly low, and the suggested changes were a little over my comfort level. Since it was described as being of little real benefit and the effort to figure it out would take me a while, I'm passing on that change for now.