1、先备份配置文件cp/etc/default/grub/etc/default/grub.bak
2、修改/etc/default/grub和改变内核参数的值ipv6.disable=0如下所示：＃cat /etc/default/grubGRUB_TIMEOUT = 5GRUB_DEFAULT =保存的GRUB_DISABLE_SUBMENU = trueGRUB_TERMINAL_OUTPUT =“控制台”GRUB_CMDLINE_LINUX =“ ipv6.disable = 0 crashkernel =自动rhgb安静”GRUB_DISABLE_RECOVERY =“ true”
4、重新启动系统以使更改生效。reboot
5、验证是否成功启用了IPv6，执行以下命令ifconfig -a | grep inet6
