我一直致力于在我的网络中获得 IPv6 支持，并且在短时间内一切正常。服务器正在运行 Ubuntu Server 8.10。
但是，现在每当我尝试在服务器上执行与 IPv6 相关的任何操作时，我都会收到“不允许操作”。这来自诸如wide-dhcpv6-client（尝试从ISP获取IPv6地址时）和radvd之类的东西——这两种错误都将这种类型的错误记录到系统日志中。
即使 ping 回环接口也失败：
xxx@gordon:~$ ping6 ::1
PING ::1(::1) 56 data bytes
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
^C
--- ::1 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2014ms
xxx@gordon:~$ sudo ping6 ::1
sudo: unable to resolve host gordon
PING ::1(::1) 56 data bytes
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not …