Saturday, 31 August 2019

How to disable IPv6 on CentOS 7



Internet Protocol version 6 (IPv6) is the latest version of the Internet Protocol (IP) that provides an identification and location for Internet of devices on networks and provides a larger IP addressing scheme for Internet of devices.
For some reasons, disable IPv6 is required on the server. Following steps describes how to disable IPv6 on CentOS 7 system.

Step 1: Edit the /etc/sysctl.conf configure file and put the following lines in end of the file:

[root@linuxcloudy ~]# vi /etc/sysctl.conf
……………………….
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1

Step 2. Save the changes and run the following command to reflect the changes:

[root@linuxcloudy ~]# sysctl -p
…………………………
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
[root@linuxcloudy ~]#

Done!!!

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