martian entry in debian log file

view story

http://serverfault.com – I have a Debian Wheezy server and several windows 7(sp1) & windows xp (sp3) clients. The server has 2 network cards with eth0 the local internal. I am also running a dynamic DNS server on the Debian Wheezy server so the windows clients are all getting their ip addresses from this. On booting the Windows 7 clients, a single martian entry is appearing in the debian server log for each client such as; kernel: [ 76.123294] martian source from, on dev eth0 This doesn't happen for any of the windows xp clients but with all the windows 7. I cannot find any p (HowTos)