This is a replacement for the standard vpnc-script used with vpnc and openconnect. It sets up VPN routing which doesn't screw over the normal routing of the box. It sets up a new network namespace for the VPN to use, and it runs a Secure Shell dæmon inside that namespace, with full access to all routes on the VPN.
This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/fkoch/vpn-script-sshd/