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:         1418 imported, 0 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:        2757154          0        151          0    2757003
    Import withdraws:       522332          0        ---          0     522222
    Export updates:        2757003    2757003          0          0          0
    Export withdraws:       522222          0        ---          0          0