+--------------------------------------------+
             |  Type = 0x0b (1 octet)                     |
             +--------------------------------------------|
             |  Sub-Type = 2 (1 octet)                    |
             +--------------------------------------------|
             |  SFC Context Label (3 octets)              |
             +--------------------------------------------|
             |  SF Label (3 octets)                       |
             +--------------------------------------------+