4174ffa3ef
- Improve download of VPN helper scripts during setup. Note: https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/... redirects to https://raw.githubusercontent.com/hwdsl2/setup-ipsec-vpn/master/extras/... Use the latter directly so that Wget can reuse the same connection for all 3 helper scripts. - For Ubuntu 18.04, improve download of NSS packages and add fallback URLs.