Comment 2 for bug 1107214

I ran into the same problem, but I'm not sure what the correct fix is. It sounds like the correct behavior is to just run iptables -c -t for each table explicitly (like before the commit above) rather than skipping over tables that don't appear in the iptables -c output?

Regardless, the except ValueError: branch in the _find_table method should be removed. That's what's currently masking this problem. Having special cases in application code only to deal with tests is bad practice.