环 境
RHEL7.3
更改/etc/sysctl.conf配置文件
[root@Jaking vsftpd]# 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
net.ipv6.conf.default.disable_ipv6 = 1
[root@Jaking vsftpd]# ifconfig
# IPV6 字段 inet6 fe80::250:56ff:fe22:db62
ens33: flags=4163mtu 1500
inet 192.168.10.11 netmask 255.255.255.0 broadcast 192.168.10.255
inet6 fe80::250:56ff:fe22:db62 prefixlen 64 scopeid 0x20
ether 00:50:56:22:db:62 txqueuelen 1000 (Ethernet)
RX packets 11717 bytes 4355183 (4.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6943 bytes 2011730 (1.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 112 bytes 9492 (9.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 112 bytes 9492 (9.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@Jaking vsftpd]# sysctl -p #让配置文件立即生效
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
[root@Jaking vsftpd]# ifconfig
# IPV6 字段已经消失
ens33: flags=4163mtu 1500
inet 192.168.10.11 netmask 255.255.255.0 broadcast 192.168.10.255
ether 00:50:56:22:db:62 txqueuelen 1000 (Ethernet)
RX packets 11747 bytes 4357703 (4.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6961 bytes 2014592 (1.9 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1 (Local Loopback)
RX packets 112 bytes 9492 (9.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 112 bytes 9492 (9.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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