我似乎无法访问服务。
使用VMWare Fusion启动下载的VM image(在Mac OS X 10.8.2上)ifconfig返回以下内容:
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
ether 00:50:56:25:fd:9a
inet6 dc20:c7f:2012:12::7 prefixlen 64
inet6 fe80::250:56ff:fe25:fd9a%em1 prefixlen 64 scopeid 0x3
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
[root@dc20 ~]# sockstat -6:USER COMMAND PID FD PROTO LOCAL ADDRESS FOREIGN ADDRESS
root cashew 1447 3 tcp6 dc20:c7f:2012:12::7:7979 *:*
root cherry 1443 3 tcp6 dc20:c7f:2012:12::7:24359 *:*
root coney 1439 3 tcp6 dc20:c7f:2012:12::7:65214 *:*
root dealer 1435 4 tcp6 dc20:c7f:2012:12::7:8888 *:*
root desheepd 1431 3 udp6 dc20:c7f:2012:12::7:547 *:*
root dog 1427 3 tcp6 *:3146 *:*
root gallows 1415 3 tcp6 dc20:c7f:2012:12::7:6666 *:*
root jerkin 1395 3 tcp6 dc20:c7f:2012:12::7:63715 *:*
root mixology 1387 3 tcp6 dc20:c7f:2012:12::7:35575 *:*
root nancy 1379 3 tcp6 dc20:c7f:2012:12::7:57554 *:*
root nom 1370 3 tcp6 dc20:c7f:2012:12::7:7368 *:*
nssds nssds 1366 3 tcp6 dc20:c7f:2012:12::7:54339 *:*
root ocrd 1362 4 tcp6 dc20:c7f:2012:12::7:31967 *:*
root parrot 1357 3 tcp6 *:5160 *:*
root ralph 1353 3 tcp6 dc20:c7f:2012:12::7:57553 *:*
scool scool 1349 3 tcp6 *:4637 *:*
root semem 1332 3 tcp6 dc20:c7f:2012:12::7:6941 *:*
root sshd 1316 3 tcp6 *:22 *:*
tictactoe tictactoe 1223 3 tcp6 dc20:c7f:2012:12::7:25375 *:*
_ngircd ngircd 1210 10 tcp6 ::1:6667 *:*
_ngircd ngircd 1210 11 tcp6 ::1:6668 *:*
_ngircd ngircd 1210 12 tcp6 ::1:6669 *:*
_ngircd ngircd 1210 13 tcp6 dc20:c7f:2012:12::7:6667 *:*
_ngircd ngircd 1210 14 tcp6 dc20:c7f:2012:12::7:6668 *:*
_ngircd ngircd 1210 15 tcp6 dc20:c7f:2012:12::7:6669 *:*
root zul 1083 3 tcp6 dc20:c7f:2012:12::7:25201 *:*
root syslogd 1057 6 udp6 *:514 *:*
但是我似乎无法连接到任何形式为dc20:c7f:2012:12::7:的服务，例如，能够向/从在dc20:c7f上运行的
semem服务发送/接收: 2012:12::7，端口6941我尝试了诸如
ping6和telnet -6和netcat/nmap的基本内容，以及python套接字，但它们似乎无法连接(超时)。另一个*:服务运行良好。
我从Google搜索结果中了解到
dc20:c7f:2012:12::7:6941表示该服务已绑定(bind)到与ipv6地址“dc20:c7f:2012:12::7”关联的接口(interface)。 (虚拟)网络接口(interface)em1，也称为备用地址，因此，为了能够与服务进行通信，我首先必须创建一个套接字，将套接字绑定(bind)到与该接口(interface)关联的该地址，然后从此接口(interface)发送到服务，但是在代码中尝试仍然不可行。请提供一些指导？希望能用Python进行一些套接字编程。
镜像到reddit comment
最佳答案
在/etc/rd.conf中，将此行替换为:ifconfig_em1="inet6 dc20:c7f:2012:12::7 prefixlen 64"与此ifconfig_em1_ipv6="inet6 dc20:c7f:2012:12::7 prefixlen 64"
然后重新启动。
[root@dc20 ~]# ping6 -c 3 dc20:c7f:2012:12::7
PING6(56=40+8+8 bytes) dc20:c7f:2012:12::7 --> dc20:c7f:2012:12::7
16 bytes from dc20:c7f:2012:12::7, icmp_seq=0 hlim=64 time=0.290 ms
16 bytes from dc20:c7f:2012:12::7, icmp_seq=1 hlim=64 time=0.065 ms
16 bytes from dc20:c7f:2012:12::7, icmp_seq=2 hlim=64 time=0.070 ms
--- dc20:c7f:2012:12::7 ping6 statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.065/0.142/0.290/0.105 ms
[root@dc20 ~]#
完全可以。