anchor.diff:           | DS0_GROUP
            | DOMAIN_NAME
            | ECHO
  +         | EGRESS
            | ENCAPSULATION
            | ENCRYPTION
            | END_CLASS_MAP
  
positive.code:       | ONE
        | OPENFLOW
        | PLAT
        | POLICY_MAP
        | POWEROFF
        | PROTOCOL
        | PSEUDOWIRE_CLASS
        | PTP
  
negative.code:          | IDLE
           | IDLE_TIMEOUT
           | IMPORT
           | INGRESS
           | INSERVICE
           | INSPECT
           | INSTANCE
  