anchor.diff:  set_next_hop_rp_stanza
   :
      SET NEXT_HOP
  -   ( IP_ADDRESS | IPV6_ADDRESS | PEER_ADDRESS | SELF)
  -   DESTINATION_VRF?
  -   NEWLINE
  +   (
  +      IP_ADDRESS
  +      | IPV6_ADDRESS
  +      | PEER_ADDRESS
  +      | SELF
  +   ) DESTINATION_VRF? NEWLINE
   ;
   
   set_origin_rm_stanza
  
positive.code: 
  if_rp_stanza
  :
    IF boolean_rp_stanza THEN NEWLINE rp_stanza*
    elseif_rp_stanza*
    else_rp_stanza?
    (ENDIF | EXIT) NEWLINE
  ;
  
  ip_policy_list_stanza
  
negative.code: 
  apply_rp_stanza
  :
     APPLY name = variable NEWLINE
  ;
  
  boolean_and_rp_stanza
  