"DROPPED IN=eth0 ... messages on console

["Edward C. Jones" <edcjones@comcast.net>]

I have a PC with an AMD64 chip in it. I have cable broadband which is 
connected via a cable modem and a network card. I have two versions of 
Debian unstable on my box. The first one is Kanotix (call it "K"). The 
second one is pure Debian unstable (call it "U"). Both are almost up to 
date. When I am running under U and I am at the console (no X, no KDE), 
I get many messages that start with "DROPPED IN=eth0". I don't get these 
messages when I am using K. What is the problem and how do I fix it?