Various exemplary embodiments relate to a method and related network node including: receiving, at the network device, a traffic message including an IP address; identifying the traffic message as belonging to a new session; generating a request message based on identifying the traffic message as belonging to a new session, wherein the request message includes the IP address; transmitting the request message to a policy server; and receiving, from the policy server, a policy message including a policy. Various exemplary embodiments relate to a method and related network node including: receiving, at the policy server, a request message from a network device, the request message including a subscriber IP and a network device identifier; identifying a subscriber session associated with the IP address; recording the network device identifier in association with the subscriber session; retrieving a policy associated with the subscriber session; and transmitting the policy to the network device.