IPv6在Max OS X 10.6上的ping测试失败

Question

$ ifconfig
...
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:16:cb:94:1a:79 
inet6 fe80::216:cbff:fe94:1a79%en0 prefixlen 64 scopeid 0x4 
inet 192.168.163.200 netmask 0xfffffe00 broadcast 192.168.163.255
media: autoselect (100baseTX <full-duplex,flow-control>)
status: active
...

所以，您可以看到我的机器在en0接口上有一个fe80::216:cbff:fe94:1a79地址。

$ ping6 fe80::216:cbff:fe94:1a79%en0
PING6(56=40+8+8 bytes) fe80::216:cbff:fe94:1a79%en0 --> fe80::216:cbff:fe94:1a79%en0
16 bytes from fe80::216:cbff:fe94:1a79%en0, icmp_seq=0 hlim=64 time=0.153 ms
^C
--- fe80::216:cbff:fe94:1a79%en0 ping6 statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.153/0.153/0.153/0.000 ms

$

但是为什么呢？

$ ping6 fe80::216:cbff:fe94:1a79
ping6: UDP connect: No route to host
$ 

失败了？是否可能在不输入接口名称%en0的情况下访问远程计算机？

也许这是一个非常基本的问题，因为我不是一个强大的IPv6用户。

- user663896

Answer 1

fe80::地址是本地链路地址，这意味着该地址仅对特定的适配器唯一。每个适配器可以通过ping你提供的地址fe80::216:cbff:fe94:1a79来引用完全不同的机器。

参考链接：http://en.wikipedia.org/wiki/Link-local_address

- Steve-o