Removing an Additional Public IPv4 or IPv6 Address in a Linux server (CentOS Stream 8)

For Cloud Server

In this article, we'll show you how to remove an additional public IPv4 or IPv6 address in a server with CentOS Stream 8 installed.

• Log in to the server.

• Open the file /etc/sysconfig/network-scripts/ifcfg-ens192 with the vi editor. To do this, enter the following command:

  [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens192

• To remove the additional public IPv4 address from the network interface, delete the following entry:

  IPADDR1=<ADDITIONAL IPv4 ADDRESS>
  PREFIX1=32

  To remove the additional IPv6 address, delete the following entry:

  IPV6ADDR_SECONDARIES=<ADDITIONAL IPv6 ADDRESS>/64

• Perform a reboot of the server. To do this, enter the following command:

  [root@localhost ~]# systemctl reboot

• Log in to the server again.

• To verify that the IPv4 address has been removed, enter the following command:

  [root@localhost ~]# ip addr