genesis02/ipv4: show protocols all default_ext

default_ext Pipe master up 2019-04-23 => ext

Preference:     70
  Input filter:   (unnamed)
  Output filter:  (unnamed)
  Routes:         3244856 imported, 9 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:     4240517860        128          0   26987477 4213530255
    Import withdraws:     95477727          0        ---         75   95477545
    Export updates:     4219554165 4219554037          3          9        116
    Export withdraws:     95477649          0        ---          0        107