spb-rs2/ipv4: show protocols all l_telecom

l_telecom BGP --- start 2020-09-18 Passive Socket: Connection closed

Description:    l_telecom/205495/AS-LT
  BGP state:          Passive
    Neighbor address: 185.1.152.79
    Neighbor AS:      205495
    Local AS:         50817
    Last error:       Socket: Connection closed
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable