Possible Problem With The Ethernet Of My Dedi

i have recently get this server , we moved to this server in the same datacenter

Linux OS:centos 5.4
Kernel Version(uname -r) 2.6.28.7
Hardware Information:icore7 920 + 12gb ram
Software Version;csf firewall, ossec Intrusion Detection System, rvsitebuilder
Control Panel(if any)whm+ fantastico

yesterday the dc tech logged-in by ssh (root) cause we couldn't connect to the ftp box we keep our backup's (the new box couldnt connect to the ftp got time out)
They fixed it.

Today i got a time out and after 2 reset and restaring of services the server was back again.Then i got this messages and it still coming (3 hours now i get 1 similar message per 5 second )

Code:
Nov 4 12:31:20 gandalf kernel: martian source 217.20.117.1 from 127.0.0.239, on dev eth0
Nov 4 12:31:20 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Nov 4 12:31:21 gandalf kernel: martian source 217.20.117.1 from 127.0.0.244, on dev eth0
Nov 4 12:31:21 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Nov 4 12:31:22 gandalf kernel: martian source 217.20.117.1 from 127.0.0.252, on dev eth0
Nov 4 12:31:22 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:18:71:80:07:86:08:06
Nov 4 12:31:22 gandalf kernel: martian source 217.20.117.1 from 127.0.0.244, on dev eth0
Nov 4 12:31:22 gandalf kernel: ll header: ff:ff:ff:ff:ff:ff:00:1a:4b:3a:7e:23:08:06
Also the firewall stopped the port scanning from a server within the same dc.

I checked it on google and the explanation's varies but most say that is a problem of the router/switch or similar.