pbb-ketchup: show protocols all ospf_ipv6

ospf_ipv6 OSPF ospf6 up 2021-06-23 13:28:29 Running

Channel ipv6
    State:          UP
    Table:          ospf6
    Preference:     150
    Input filter:   ACCEPT
    Output filter:  ACCEPT
    Routes:         21 imported, 6 exported, 21 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             47          0          0          0         47
      Import withdraws:            4          0        ---          0          4
      Export updates:             53         47          0        ---          6
      Export withdraws:            4        ---        ---        ---          0