腾讯云OpenCloudOS 9.2开启ipv6

宝塔Apache 下是可以直接使用ipv6的，不需要设置，这个在之前的腾讯云系统中测试，确实只要控制台设置这个轻量主机有ipv6就可以了。

但是后来的这台机器系统比较新吧，偶然发现一直以来的ipv6不行了，ping6 www.qq.com不通，原来是没有获取v6ip

相关命令如下：

[root@VM-16-8-centos ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 52:54:00:5c:f5:4e brd ff:ff:ff:ff:ff:ff
    altname enp0s5
    altname ens5
    inet 10.0.16.8/22 brd 10.0.19.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fd76:3600:170a:3104:0:9e39:271c:4029/128 scope global dynamic noprefixroute 
       valid_lft 373297071sec preferred_lft 121009071sec
    inet6 fe80::de99:40d0:bdd1:5e81/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
[root@VM-16-8-centos ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.16.8  netmask 255.255.252.0  broadcast 10.0.19.255
        inet6 fd76:3600:170a:3104:0:9e39:271c:4029  prefixlen 128  scopeid 0x0<global>
        inet6 fe80::de99:40d0:bdd1:5e81  prefixlen 64  scopeid 0x20<link>
        ether 52:54:00:5c:f5:4e  txqueuelen 1000  (Ethernet)
        RX packets 253872475  bytes 138623132189 (129.1 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 217902820  bytes 165688420535 (154.3 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 4142944  bytes 12987946262 (12.0 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4142944  bytes 12987946262 (12.0 GiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@VM-16-8-centos ~]# ip -6 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
    inet6 fd76:3600:170a:3104:0:9e39:271c:4029/128 scope global dynamic noprefixroute 
       valid_lft 373293536sec preferred_lft 121005536sec
    inet6 fe80::de99:40d0:bdd1:5e81/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

//正文开始
//下面主要是看看当前ipv6到底通不通
[root@VM-16-8-centos ~]# ping6 www.qq.com
ping6: connect: Network is unreachable

//ip地址在你的腾讯云控制台可以拿到，注意对比看你的网关格式，直接替换就可以了
//原文写的叫：添加ipv6配置
[root@VM-16-8-centos ~]# nmcli  con add con-name dhcp ifname eth0 type ethernet ipv4.method auto ipv6.addresses  2402:4e00:c032:4000:22da:7fa8:10ea:0/128  ipv6.gateway 2402:4e00:c032:4000::
Connection 'dhcp' (0219f35b-fd0e-45d1-ba31-2a8a6aa06d3b) successfully added.

//原文写的是：激活配置文件
[root@VM-16-8-centos ~]# nmcli  con up dhcp
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/3)
[root@VM-16-8-centos ~]# nmcli  con show
NAME             UUID                                  TYPE      DEVICE 
dhcp             0219f35b-fd0e-45d1-ba31-2a8a6aa06d3b  ethernet  eth0   
lo               166ef238-4485-44e5-b050-12dd248af123  loopback  lo     
cloud-init eth0  1dd9a779-d327-56e1-8454-c65e2556c12c  ethernet  --  

//原文写的是：删除原有配置文件   
[root@VM-16-8-centos ~]# nmcli  con del cloud-init\ eth0
Connection 'cloud-init eth0' (1dd9a779-d327-56e1-8454-c65e2556c12c) successfully deleted.

//原文写的是配置文件
[root@VM-16-8-centos ~]# ping6 www.qq.com
PING www.qq.com(240e:97c:2f:2::4c (240e:97c:2f:2::4c)) 56 data bytes
64 bytes from 240e:97c:2f:2::4c (240e:97c:2f:2::4c): icmp_seq=1 ttl=50 time=28.0 ms
64 bytes from 240e:97c:2f:2::4c (240e:97c:2f:2::4c): icmp_seq=2 ttl=50 time=28.0 ms

有返回数据了，直接将域名aaaa解析就可以了。

方法来自：

OpenCloudOS Server 9 如何配置ipv6-腾讯云开发者社区-腾讯云
https://cloud.tencent.com/developer/article/2473943