1. A method for providing dynamic origination-based routing key registration in a DIAMETER network, the method comprising: at a first DIAMETER node: receiving, from a second DIAMETER node, origin-based routing information, wherein the origin-based routing information specifies one or more sources such that traffic originating from one of the one or more sources should be routed to the second DIAMETER node; automatically generating an origin-based routing rule based on the received origin-based routing information, wherein the origin-based routing rule specifies that messages originating from the one or more sources should be routed to the second DIAMETER NODE; and routing DIAMETER messages received by the first DIAMETER node and originating from the one or more sources to the second DIAMETER node using the origin-based routing rule.