Install ipwatchd-gnotify by entering the following commands in the terminal:
sudo apt update sudo apt install ipwatchd-gnotify
Description:
Gnome notification tool for IPwatchD
IPwatchD-G-Notify is notification tool for Gnome environment used by IPwatchD daemon to display notification "bubble" when IP conflict occurs.
Homepage: http://ipwatchd.sf.net
Version: 1.0.1-1build1
Section: universe/gnome