US Patent 10057157 Automatically advertising NAT routes between logical routers

Some embodiments provide a method for configuring a logical router in a logical network. The method receives a configuration of a rule for network address translation (NAT) used by a first logical router to translate a set of network addresses to a particular network address. The method automatically configures advertisement of a route for the particular network address to a second logical router. The method automatically adds the advertised route for the particular network address to a routing table for at least one component of the second logical router.