pbb-osmium: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-06-23 13:28:06 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         23 imported, 8 exported, 21 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             27          0          0          0         27
      Import withdraws:            0          0        ---          0          0
      Export updates:             40         25          0        ---         15
      Export withdraws:            0        ---        ---        ---          0