同学服务器中毒不停发 arp request

[lyris]

RT, 被机房警告，上去用iptraf看发现n多arp 请求，如下:
ARP request for 10.161.202.17 (52 bytes) |
| ARP request for 10.161.201.135 (52 bytes) |
| ARP request for 10.161.198.36 (52 bytes) |
| ARP request for 10.161.193.89 (400 bytes) |
| ARP request for 10.161.202.163 (400 bytes) |
| ARP request for 10.161.194.104 (400 bytes) |
| ARP request for 10.161.197.52 (400 bytes) |
| ARP request for 115.29.53.187 (2960 bytes) |
| ARP request for 115.29.49.169 (2960 bytes) |
| ARP request for 115.29.41.57 (2960 bytes) |
| ARP request for 115.28.100.124 (40 bytes)

Google无果，该如何是好?