1. Set up the repository credentials:

This creates a secure file so APT knows how to log into the Caddy server. Replace <USERNAME> and <PASSWORD> with appropriate values.

echo "machine apt.isec.pi-wo.pl login <USERNAME> password <PASSWORD>" | sudo tee /etc/apt/auth.conf.d/dvpnsec.conf > /dev/null

2. Add the repository to APT:

This dynamically detects your architecture and OS version and explicitly bypasses the GPG signature check for early testing.

echo "deb [trusted=yes arch=$(dpkg --print-architecture)] https://apt.isec.pi-wo.pl/ noble main" | sudo tee /etc/apt/sources.list.d/dvpnsec.list > /dev/null

3. Update and install:

sudo apt-get update
sudo apt-get install dvpnsec-client

4. Check group access after install:

id -nG

The package will try to add the installing user to the meander group automatically. If meander is missing from the output, run:

sudo usermod -aG meander $USER

Log out and back in before using dvpnsec-client without sudo.