Method 200 may begin at starting block 205 and proceed to stage 210 where first client service instance 140 may receive a first message having an identifier. For example, the first message may comprise a message in a DOCSIS transaction received from client device 105 through node 110. The identifier, for example, may comprise or be based on: i) a Media Access Control (MAC) address of a Cable Modem (CM) corresponding to client device 105 from which the first message was received; ii) a Remote Physical Layer (R-PHY) node identifier corresponding to node 110 from which the first message was received; and iii) a Layer 2 Tunneling Protocol Version 3 session corresponding to the first message.