$ monmaptool --create --add foo 2.3.4.5:6789 mymonmap
  monmaptool: monmap file mymonmap
  monmaptool: generated fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re)
  setting min_mon_release = pacific
  monmaptool: writing epoch 0 to mymonmap (1 monitors)

  $ monmaptool --print mymonmap
  monmaptool: monmap file mymonmap
  epoch 0
  fsid [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12} (re)
  last_changed \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+.\d\d\d\d (re)
  created \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+.\d\d\d\d (re)
  min_mon_release 16 (pacific)
  election_strategy: 1
  0: v1:2.3.4.5:6789/0 mon.foo