rs1/ipv4: show protocols all pb_6_flow_1

pb_6_flow_1 BGP --- start 2020-04-21 Connect Socket: Connection refused

Description:    Flow Processor
  BGP state:          Connect
    Neighbor address: 2001:7f8:64:225::10
    Neighbor AS:      64512
    Last error:       Socket: Connection refused
  Channel ipv6
    State:          DOWN
    Table:          master6
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)