br-gru-s1: show protocols all kernel2

Name       Proto      Table      State  Since         Info
kernel2    Kernel     master6    up     2024-06-17    
  Channel ipv6
    State:          UP
    Table:          master6
    Preference:     10
    Input filter:   REJECT
    Output filter:  (unnamed)
    Routes:         0 imported, 548 exported, 0 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:              0          0          0          0          0
      Import withdraws:            0          0        ---          0          0
      Export updates:        5617920          0          2        ---    5617918
      Export withdraws:        14517        ---        ---        ---      14517