br2/ipv4: show protocols all pipe1

pipe1 Pipe --- up 2020/02/20-08:24:07 master4 <=> blackholed

Channel main
    Table:          master4
    Peer table:     blackholed
    Import state:   up
    Export state:   up
    Import filter:  ACCEPT
    Export filter:  REJECT
  Routes:         3 imported, 0 exported
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:              6          0          0          0          6
    Import withdraws:            2          0        ---          0          2
    Export updates:     1710095295          7 1710095288          0          0
    Export withdraws:    291256536          0        ---  291618368          0