使用ifconfig命令查看网卡信息,如果出现inet6 fe80::20c:29ff:fed0:3514,说明机器开启了ipv6
[root@MiWiFi-R3A-srv ~]# ifconfig
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.31.201 netmask 255.255.255.0 broadcast 192.168.31.255
inet6 fe80::3ef8:d2:8709:a5ce prefixlen 64 scopeid 0x20<link>
ether 14:14:4b:e4:88:08 txqueuelen 1000 (Ethernet)
RX packets 3105 bytes 375203 (366.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1651 bytes 269376 (263.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
编辑/etc/sysconfig/network配置,增加 NETWORKING_IPV6=no,保存并退出
[root@domain]$ vim /etc/sysctl.conf
# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
#
net.ipv6.conf.all.disable_ipv6=1
编辑/etc/sysconfig/network配置,增加 NETWORKING_IPV6=no,保存并退出