A system receives a first request from a first instance of a network function associated with a first address. The system may determine the first address and, based at least in part on the first address, may identify a second address with which to respond to the first request. The system may then send, to the first instance of the network function, a response to the first request specifying the second address. The system may also receive a second request from a second instance of the network function associated with a third address. The system may determine a fourth address with which to respond to the second request, and may thereafter send a response to the second request to the second instance of the network function, with the response specifying the fourth address.