Unable to remove IP address from Plesk: Cannot remove the IP address because it is the last IP address present on a network interface

Plesk for Windows Plesk for Linux kb: fixed kb: bug ABT: Group B

Applicable to:

Product issue:

#PPPM-3818 "Removing an IPv6 IP address registered in Plesk no longer fails with the “Cannot remove the IP address” error."
Fixed in:
- Plesk Obsidian 18 February 2020

Please consider updating your server:

Use one of the following workarounds:

Workaround A. Hide the IP address from Plesk UI (click to expand the solution listing)

Log into Plesk.
Make sure that there is no subscriptions or reseller accounts assigned to this IP address in Plesk > Tools & Settings > IP Addresses (both Resellers and Sites values should be 0).
Connect to the server via SSH or RDP.
Open /usr/local/psa/admin/conf/panel.ini on Linux or %plesk_dir%\admin\conf\panel.ini on Windows and add the following line:

CONFIG_TEXT: [ip]blacklist="IP_addresses_to_be_hidden"
Open Tools & Settings > IP Addresses and click Reread IP button:

Note: Hiding an IP address already assigned to one or more subscriptions will result in the The IP address is already used for hosting error. The IP address will be marked as blacklisted in Tools & Settings > IP Addresses , but will be available in the Plesk interface.

Workaround B. Remove the IP from network interface by means of an operating system (click to expand the solution listing)

Log into Plesk and make sure that there is no subscriptions or reseller accounts assigned to this IP address in Plesk > Tools & Settings > IP Addresses (both Resellers and Sites values should be 0).
Log into the server via SSH and remove the IP address manually from the network interface by means of the operating system installed on the server for example using the command below (where 203.0.113.2 is the affected IP address and eth0 the network interface name):

# ip addr del 203.0.113.2/24 dev eth0

Note: Before removing an IP address double check that there is no websites assigned to this IP address in Plesk. If IP address is not in use, in Plesk > Tools & Settings > IP Addresses values "Resellers" and "Sites" of this IP address will be "0".
Go to Plesk > Tools & Settings > IP Addresses and click Reread IP button:
Select IP address that needs to be removed (it will be marked as broken ) and click Remove button: