甲骨文VPS添加IPV6全自动脚本

前提：面板已经调整IPv6完毕; OS为Debian Ubuntu; CentOS不适用
常见问题: 如果出现 Debian 或者 Ubuntu长期不动，说明面板IPv6没有调整好。Debian需要重启生效。有的VPS调整不出来，只能删除重开
使用方法：全部粘贴到root提示符号下面，或者做成sh采用bash执行
已经测试: Ubuntu 20.04, Debian 11
非甲骨文IPv6: 理论上也适用, 没有测试过
优点: 只需运行脚本一次，VPS重启IPv6仍然有效; 自动识别OS, 运行相应脚本
转自hostloc论坛ccfer大佬

Debian_IPv6(){

iName=$(ip add | grep "^2: " | awk -F'[ :]' '{print $3}')
dhclient -6 $iName #临时开启IPv6
echo $iName #人工查看网卡是否正确
cp /etc/network/interfaces /root
sed -i "$ a iface $iName inet6 dhcp" /etc/network/interfaces
echo "Reboot... & ping ipv6.google.com After reboot"
reboot
}

Ubuntu_IPv6(){

yamlName=$(find /etc/netplan/ -iname "*.yaml")
iName=$(ip add | grep "^2: " | awk -F'[ :]' '{print $3}')
dhclient -6 $iName
MAC=$(ip add | grep "link/ether.*brd" | awk -F' ' '{print $2}')
IPv6=$(ip add | grep "inet6.*global" | awk -F' ' '{print $2}')
if [[ ${#IPv6} -lt 5 ]]; then echo "Can't IPv6"; exit 1; fi

cp $yamlName /root/

cat <<0099 >$yamlName
network:
    ethernets:
        ens3:
            dhcp4: true
            dhcp6: false
            match:
                macaddress: $MAC
            addresses:
              - $IPv6
            set-name: $iName
    version: 2
0099

netplan apply
sleep 2s
ping ipv6.google.com
}

myOS=$(hostnamectl | sed -n 's_.*System: \(\S*\).*_\1_p')
#Ubuntu, Debian

if [[ "$myOS" =~ "Ubuntu" ]]; then
  echo "Ubuntu"
  Ubuntu_IPv6
elif [[ "$myOS" =~ "Debian" ]]; then
  echo "Debian"
  Debian_IPv6
fi