Removing an Additional Public IPv4 or IPv6 Address in a Linux server (CentOS Stream 8)
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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.
Prerequisite
You have unassigned the additional public IPv4 or IPv6 address in the Cloud Panel.
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=32To 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