pbb-ketchup: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-09-19 13:32:39 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         29 imported, 4 exported, 28 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            120          0          0          0        120
      Import withdraws:           30          0        ---          0         30
      Export updates:            121        117          0        ---          4
      Export withdraws:           30        ---        ---        ---          0