Decision Process 


  1.  check if prefix is eligible (reachable)
  2.  localpref, bigger is better
  3.  aspath length, the shorter the better
  4.  origin, the lower the better
  5.  MED decision, only comparable between
      the same neighboring AS
  6.  EBGP is cooler than IBGP
  7.  weight, bigger is better (extension)
  8.  route age: older is better (extension,
      off by default)
  9.  lowest BGP ID wins
  10. shorter CLUSTER_LIST wins
  11. lowest peer address wins
  12. fatalx("Uh, a politician in the decision process")