查看服务监听的 IP 中是否有 IPv6 格式的地址
netstat -tuln
如果有 tcp6 协议的就是有打开 ip6
编辑 / etc/default/grub, 在 GRUB_CMDLINE_LINUX 加上的后面句首加上 ipv6.disable=1.
修改前:
[root@localhost Desktop]# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed's, release .*$,,g'/etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
修改后:
[root@localhost Desktop]# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed's, release .*$,,g'/etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="ipv6.disable=1 rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
修改完毕后保存, 运行 grub2-mkconfig -o /boot/grub2/grub.cfg 重新生成 grub.cfg 文件.
[root@localhost Desktop]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-514.2.2.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-514.2.2.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-327.36.3.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.36.3.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-d885883cdb4944609bc5e3493dd2b680
Found initrd image: /boot/initramfs-0-rescue-d885883cdb4944609bc5e3493dd2b680.img
done
重启系统, 查看 ip6 是否关闭.
来源: http://www.bubuko.com/infodetail-2476840.html