gw3/ipv4: show protocols all p_maintbl

p_maintbl Pipe master up 2017-07-13 => ebgp

Preference:     70
  Input filter:   (unnamed)
  Output filter:  REJECT
  Routes:         14958 imported, 0 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:        2639721          0         83      47265    2592373
    Import withdraws:       217175          0        ---         25     217154
    Export updates:        2625682    2625607         75          0          0
    Export withdraws:       217210          0        ---         37          0