LOC网友指出大多都是网关问题,

nano /etc/network/interfaces

修改IPv6配置

# Generated by SolusVM

 auto lo
  iface lo inet loopback

 auto eth0
  iface eth0 inet static
   address 88.214.22.XX
   gateway 88.214.22.1
   netmask 255.255.255.0
   dns-nameservers 8.8.8.8 8.8.4.4
   up ip addr add 2a12:a300:a219::XXXX/48 dev eth0
   up ip addr add 2a12:a300:200::a3a8:XXXX/40 dev eth0
   up ip -6 route add 2a12:a300:200::1 dev eth0
   up ip -6 route add default via 2a12:a300:200::1

重启网络就行了

service networking restart 

每台母鸡具体网关不一样
如何得到你当前vps的网关?
打开sshping/etc/network/interfaces里默人的长网关会得到一个缩位的短网关

最后发现ipv6已经恢复正常