In one embodiment, a method includes receiving a message associated with a device in a first domain. An identifier is determined for the device. The message is then sent to a load balancer where the message includes the identifier. The load balancer is then configured to send the message to a network device in a plurality of network devices. The network device is configured to process messages from the device. A second message may be received at the load balancer from a second domain. The second message may include the identifier for the device. The load balancer may then send the second message to the selected network device such that the first message and the second message are processed by the same network device.