regolith: show protocols all ospf_ipv4

ospf_ipv4 OSPF ospf4 up 2021-04-10 13:27:09 Running

Channel ipv4
    State:          UP
    Table:          ospf4
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         16 imported, 4 exported, 16 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            116          0          0          0        116
      Import withdraws:           41          0        ---          0         41
      Export updates:            127        116          0        ---         11
      Export withdraws:           47        ---        ---        ---          6