<snip> > I Googled <no client hardware address> and found the following. Don't > know if that helps at all. > > https://bugs.launchpad.net/ubuntu/+source/logcheck/+bug/113774 > > Jacques B. > If you Goolge it in double quotes, you get more hits. Here's another: http://www.archivesat.com/dhcp-server.isc.org/thread237578.htm And this one mentions that it was a bug in an application on Ubuntu. http://ubuntuforums.org/archive/index.php/t-425895.html Jacques B.