rix-rs2/ipv4: show protocols all LineR

LineR BGP --- start 2020-02-06 Passive

Description:    LineR/42765/AS-LINER
  BGP state:          Passive
    Neighbor address: 193.27.39.67
    Neighbor AS:      42765
    Local AS:         50817
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable