07-关闭ipv6

关闭ipv6

centos7

    方法1 开机在Grub启动时不加载IPV6模块步骤
    
    # 查看
    cat /etc/default/grub
    # 用命令方式即可
    sed -i "s/crashkernel=auto/crashkernel=auto ipv6.disable=1/g"  /etc/default/grub
    grub2-mkconfig -o /boot/grub2/grub.cfg
    reboot
    
    # 方法2 
    echo "net.ipv6.conf.all.disable_ipv6=1" >>/etc/sysctl.conf
    sysctl  -p

centos6和redhat 6系列禁用IPv6 方法

    # 修改两个配置文件重启即可
    echo "install ipv6 /bin/true" >> /etc/modprobe.conf
    echo "NETWORKING_IPV6=no" >> /etc/sysconfig/network
    echo "IPV6INIT=no" >> /etc/sysconfig/network
    reboot

ubuntu20.04

    echo "net.ipv6.conf.all.disable_ipv6 = 1" >>/etc/sysctl.conf
    echo "net.ipv6.conf.default.disable_ipv6 = 1" >>/etc/sysctl.conf
    echo "net.ipv6.conf.lo.disable_ipv6 = 1" >>/etc/sysctl.conf
    sysctl -p