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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