This sounds like the same apt bug that I commented on and sent a patch for under #167899. To be sure, you can check (or paste here) the output of "apt-cache policy kpat". If that shows multiple (at least three) entries for kpat with an identical version string, and the one that you have installed is not the first of those, then it's most probably the same bug.
Unfortunately, Jason Gunthorpe, who seems to feel responsable for this part of apt, tends not to acknowledge this as a bug ... Regards, Daniel
