A method for routing a redirected request message is disclosed. The method may be implemented in a Diameter signaling router (DSR) including a plurality of message processors. The method includes applying ingress message processing to a Diameter request message received from a peer node and forwarding the Diameter request message to a Diameter redirect agent in accordance to the ingress message processing. The method further includes receiving, from the Diameter redirect agent, a redirection notification message containing redirection information and modifying the Diameter request message to include the redirection information. The method also includes applying the ingress message processing to the modified Diameter request message within the DSR.