Removing a Public IP Address from a Linux Server (CentOS 7)

To remove a public IP address from a Linux server, proceed as follows:

Requirement

You have unassigned the additional public IP address in the Cloud Panel.

Log in to the server as an administrator.
To remove the additional IPv6 address, you must specify in /etc/sysconfig/network-scripts/ifcfg-ens192 to delete the following entries:

Networking_IPV6="yes"
DHCPV6C="no"
IPV6INIT="yes"
IPV6_AUTOCONF="no"
IPV6ADDR=MAIN_IPV6_ADDRESS/64
IPV6_DEFAULTGW=fe80::1%ens192
IPV6ADDR_SECONDARIES=ADDITIONAL_IPv6_ADDRESS/64

Example:

vi /etc/sysconfig/network-scripts/ifcfg-ens192

Networking_IPV6="yes"
DHCPV6C="no"
IPV6INIT="yes"
IPV6_AUTOCONF="no"
IPV6ADDR=2001:ba0:2020:bce5:cdb:a034:601e:e952/64
IPV6_DEFAULTGW=fe80::1%ens192
IPV6ADDR_SECONDARIES=2001:ba0:2020:bce5:678f:bcca:b152:a6ae/64

To restart the network, enter the following command:

/etc/init.d/network restart

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