A routing method, apparatus, and computer readable medium storing instructions to perform the method in a network having a set of communication nodes, to establish a route from at least one source node to a destination node, which includes broadcasting a request from the destination node, examining, in response to reception of the request at an intermediate node, whether the intermediate node previously received the request, and if the request was not previously received by the intermediate node, systematically rebroadcasting the request from the intermediate node with a delay that is a function of a routing metric associated with the intermediate node, and repeating the examining and rebroadcasting until the at least one source node is reached.