RG              UP                      CP              AAA
     |               |    Static Subscriber   |               |
     |               |     Detection Req.     |               |
     |              1|<-----to UP via Ci------|               |
     |               |    Static Subscriber   |               |
     |               |     Detection Rep.     |               |
     |              2|------to UP via Ci----->|               |
     |  ARP/ND(REQ)  |                        |               |
  3.1|<--------------|                        |               |
     |  ARP/ND(ACK)  |                        |               |
  3.2|-------------->|                        |               |
     |               |  Relay the ARP/ND      |               |
     |            3.3|-----to CP via Si------>|       AAA     |
     |               |                        |    Req/Rep    |
     |               |                     3.4|<------------->|
     |               |  Create Subscriber     |               |
     |               |   Session Request      |               |
     |            3.5|<--------via Ci---------|               |
     |               |  Create Subscriber     |               |
     |               |   Session Response     |               |
     |            3.6|---------via Ci-------->|               |
     |  ARP/ND(REQ)  |                        |               |
  4.1|-------------->|                        |               |
     |               |  Relay the ARP/ND      |               |
     |            4.2|-----to CP via Si------>|      AAA      |
     |               |                        |    Req/Rep    |
     |               |                     4.3|<------------->|
     |               |  Create Subscriber     |               |
     |               |   Session Request      |               |
     |            4.4|<--------via Ci---------|               |
     |               |  Create Subscriber     |               |
     |               |   Session Response     |               |
     |            4.5|---------via Ci-------->|               |
     |  ARP/ND(ACK)  |                        |               |
  4.6|<--------------|                        |               |
     |   IP Traffic  |                        |               |
  5.1|-------------->|                        |               |
     |               |  Relay the IP Traffic  |               |
     |            5.2|-----to CP via Si------>|      AAA      |
     |               |                        |    Req/Rep    |
     |               |                     5.3|<------------->|
     |               |  Create Subscriber     |               |
     |               |   Session Request      |               |
     |            5.4|<--------via Ci-------->|               |
     |               |  Create Subscriber     |               |
     |               |   Session Response     |               |
     |            5.5|---------via Ci-------->|               |
     |  ARP/ND(REQ)  |                        |               |
  5.6|<--------------|                        |               |
     |  ARP/ND(ACK)  |                        |               |
  5.7|-------------->|                        |               |
     |               |                        |               |