原因找到了，另外一台机器的网卡上面不知道怎么绑定了两个IP地址
eth0 Link encap:Ethernet HWaddr 00:20:ED:1A:62:7E
inet addr:192.168.0.104 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::220:edff:fe1a:627e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2175827 errors:0 dropped:0 overruns:0 frame:0
TX packets:2161856 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1036758540 (988.7 MiB) TX bytes:322247980 (307.3 MiB)
eth1 Link encap:Ethernet HWaddr 00:20:ED:1A:62:7F
inet addr:192.168.0.105 Bcast:192.168.0.255 Mask:255.255.255.0
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:9 errors:9 dropped:0 overruns:0 carrier:9
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:546 (546.0 b)
而我通过arp -a看到的信息是
192.168.0.104 00-20-ed-1a-62-7e 动态
192.168.0.105 00-20-ed-1a-62-7e 动态
[ 本帖最后由 alexyangw 于 2008-1-21 17:46 编辑 ]