Errors encountered while processing 03-unnumbered.yml
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface eth1 (r -> stub) on node r 
... Device crpd (node r) does not support unnumbered IPv4 interfaces
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface eth2 (r -> stub) on node r 
IncorrectValue in interfaces: Invalid unnumbered IPv4 interface eth4 (r -> stub) on node r 
Fatal error in netlab: Cannot proceed beyond this point due to errors, exiting