Abstract: In one embodiment, a method determines a first address of a sender and a second address of a receiver. The first address includes a first hierarchy of a plurality of domains and the second address includes a second hierarchy of a plurality of domains. The method then calculates a crossover point and an index based on the crossover point and the first hierarchy of the first address. The method sends a message from the sender to the receiver where the message includes the index. Before the index reaches a predefined value, each node that receives the message adjusts the index and sends the message to a parent node based on the first address. Also, when the index reaches a predefined value, each node sends the message to a child node based on the second address until a domain in which the receiver is located is reached.