pbb-styx: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-06-23 13:27:39 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         27 imported, 2 exported, 27 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             88          0          0          0         88
      Import withdraws:           16          0        ---          0         16
      Export updates:             90         88          0        ---          2
      Export withdraws:           16        ---        ---        ---          0