tll-rs2/ipv4: show protocols all beget3

beget3 BGP --- start 2021-06-24 Passive

Description:    beget3/198610/AS-BEGET
  BGP state:          Passive
    Neighbor address: 37.9.49.104
    Neighbor AS:      198610
    Local AS:         57936
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable