ipv6toolkit software package provides Security assessment and troubleshooting tool for the IPv6 protocols, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ipv6toolkit
ipv6toolkit is installed in your system.
Make ensure the ipv6toolkit package were installed using the commands given below,
$ sudo dpkg-query -l | grep ipv6toolkit *
You will get with ipv6toolkit package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | ipv6toolkit |
| Version | 2.0-1 |
| Description | Security assessment and troubleshooting tool for the IPv6 protocols |
| Sub Section | Net |