- Plesk for Linux
A server IP address was changed according to the article How to change the IP address of Plesk server?.
After the server reboot, the server IP is still present in Plesk in the menu Tools & Settings > IP Addresses.
The old IP address was not deleted from the server, and on the reboot, it was added to the system again.
Log into Plesk and delete the old IP address in Tools & Settings > IP Addresses > select the necessary IP > Remove.