Welcome! You can download the latest package and set up your system to install it.
Run the following commands to add the repository:
sudo bash -c 'echo "deb [trusted=yes] ./ ./ " > /etc/apt/sources.list.d/csvuprepo.list'
sudo apt-get update
sudo apt-get install showipv6
Note: Using [trusted=yes] skips GPG verification. For production use, consider signing your repository properly.