When connecting to server that pushes routes using this:
... # Pushed routes push "route 10.1.0.0 255.255.255.0"
and when the client overrides them in its config:
... # Options client route-nopull route 10.1.0.0 255.255.255.128 route-metric 50 ...
This works but the client's log have this:
Options error: option 'route' cannot be used in this context
This issue materializes because "route-nopull" option takes away the permission from the client to install server-pushed routes, effectively telling the option parser "no, this option is not valid here".
The way to configure it correctly is then:
... # Options client route 10.1.0.0 255.255.255.128 route-metric 50 route-nopull ...