gw6/ipv4: show protocols all p_maintbl

p_maintbl Pipe master up 2017-07-07 => ebgp

Preference:     70
  Input filter:   (unnamed)
  Output filter:  REJECT
  Routes:         1596 imported, 0 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:         623981          0        107          0     623874
    Import withdraws:        11515          0        ---          0      11449
    Export updates:         623874     623874          0          0          0
    Export withdraws:        11449          0        ---          0          0