cn-can-s3: show protocols all kernel1

Name       Proto      Table      State  Since         Info
kernel1    Kernel     master4    up     2025-01-07    
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     10
    Input filter:   REJECT
    Output filter:  (unnamed)
    Routes:         0 imported, 21 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:            446          0          6        ---        440
      Export withdraws:            8        ---        ---        ---          8