I don't see anything awful about your netcardconfig info. As before you are sending and receiving packets. And as before, the next step is to try
  • ping 72.232.180.133
then
  • ping knoppix.net
If the first works and the second fails then there is a problem that is keeping you from doing a DNS lookup on knoppix.net. And I take it we should assume that you can't get to any URL on the Internet, not just Knoppix.net, correct?