不能连网，请高手帮忙分析arp -a命令结果

hhan

不能连网，arp -a命令结果：
#arp _a
? (219.217.255.80) at 00:E0:4D:02:EC:F2 [ether] on eth0
? (219.217.255.129) at 00:E0:4C:92:F5:4D [ether] on eth0
? (219.217.255.129) at 00:E0:4C:92:F5:4D [ether] on eth0
# arp -a
? (219.217.255.254) at <incomplete> on eth0
? (219.217.255.80) at 00:E0:4D:02:EC:F2 [ether] on eth0
# arp -a
? (219.217.255.254) at <incomplete> on eth0
#arp -a
? (219.217.255.254) at <incomplete> on eth0
219.217.255.254为网关ip