post_install() {
  cat << EOF
Configure inadyn via /etc/inadyn.conf. See \`man 5 inadyn.conf\`.

Configure CLI options used by the systemd service via the INADYN_OPTS
environment variable in /etc/default/inadyn. See \`man 8 inadyn\`.

Start inadyn and enable its systemd service:
# systemctl enable --now inadyn
EOF
}
