Errors encountered while processing 03-unnumbered.yml
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface vio1 (r -> stub) on node r 
... Device openbsd (node r) does not support unnumbered IPv4 interfaces
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface vio2 (r -> stub) on node r 
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface vio4 (r -> stub) on node r 
Fatal error in netlab: Cannot proceed beyond this point due to errors, exiting