pbb-osmium: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-11-26 00:31:07 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         18 imported, 16 exported, 16 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             56          0          0          0         56
      Import withdraws:           21          0        ---          0         21
      Export updates:             74         51          0        ---         23
      Export withdraws:           20        ---        ---        ---          0