Install libndp-tools by entering the following commands in the terminal:
sudo apt update sudo apt install libndp-tools
Library for Neighbor Discovery Protocol (tools)
libndp is a library for the IPv6 Neighbor Discovery Protocol (NDP). It contains functions for building and parsing NDP messages, and provides a high-level interface for sending and receiving NDP messages on a network interface. . This package contains a tool named ndptool for sending and receiving NDP messages.