Accept Any as Neighbor
Instead of declaring a specific set of neighbors, a routing daemon can declare that it accepts neighbor connections from any routing daemon.
This configuration is especially useful for hub topologies, dial-in connections, and any situation in which a routing daemon might operate with a large number of potential neighbors.
Specify the local connect port where this routing daemon accepts TCP connections from any (remote) routing daemon.
A routing daemon can simultaneously specify individual neighbors and declare that it accepts any other routing daemons as neighbors.