Isn't your problem actually?:
Code:
[root@lala ~]# arp -na
? (192.168.1.61) at 00:25:90:69:d0:7a [ether] on eth0
? (192.168.1.230) at 00:25:90:69:c6:4f [ether] on eth1
? (61.167.xx.35) at 00:25:90:69:d0:7a [ether] on eth0
? (192.168.1.12) at 00:25:90:91:c4:40 [ether] on eth1
? (192.168.1.70) at 00:25:90:91:c3:e9 [ether] on eth1
? (61.67.xx.1) at 38:22:d6:30:17:12 [ether] on eth0
? (192.168.1.61) at 00:25:90:69:d0:7b [ether] on eth1
A arp problem with centos6
