Как мне использовать стандартный ввод для настройки openvpn?

Desde apto -obtener manual:

-f, --fix-broken
 Fix; attempt to correct a system with broken dependencies in place. 
This option, when used with install/remove, can omit any packages to permit APT to deduce a likely solution. If packages are
specified, these have to completely correct the problem.

Aparentemente, la única solución automática detectada es eliminar su paquete. Debería intentar resolver las dependencias manualmente.