pbb-ketchup: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-06-11 19:21:10 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         25 imported, 6 exported, 23 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             51          0          0          0         51
      Import withdraws:            9          0        ---          0          9
      Export updates:             67         47          0        ---         20
      Export withdraws:           20        ---        ---        ---         14