code: def _cmp_by_local_origin(path1, path2):
      
      # If both paths are from same sources we cannot compare them here.
      if path1.source == path2.source:
          return None
  
      # Here we consider prefix from NC as locally originating static route.
      # Hence it is preferred.
      if path1.source is None:
          return path1
  
      if path2.source is None:
          return path2
  
      return None
docs: Select locally originating path as best path.
  
      Locally originating routes are network routes, redistributed routes,
      or aggregated routes. For now we are going to prefer routes received
      through a Flexinet-Peer as locally originating route compared to routes
      received from a BGP peer.
      Returns None if given paths have same source.