rix-rs1/ipv4: show protocols all CGN

CGN BGP --- start 2020-02-06 Passive

Description:    CGN/204941/AS-CGNET
  BGP state:          Passive
    Neighbor address: 193.27.39.80
    Neighbor AS:      204941
    Local AS:         50817
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable