[CentOS] Clarification required for ICMP Error Message

Thu Dec 17 11:30:24 UTC 2009
John Doe <jdmls at yahoo.com>

From: Balaji <balajisundar at midascomm.com>
>     Currently i am using CentOS4.4 Linux Release
>     I have getting the following message every 10 seconds on my screen
>     "kernel: sent an invalid ICMP type 3, code 0 error 
> to a broadcast: on eth0"
>     Can any one explain me about this problem

Google says type 3 code 0 is "Network unreachable".
So the machine on is broadcasting on that it cannot reach the network...