spb-rs2/ipv4: show protocols all petrosvyaz

petrosvyaz BGP --- start 2020-02-11 Passive Socket: Connection closed

Description:    petrosvyaz/50538/AS50538/via Petrosvyaz
  BGP state:          Passive
    Neighbor address: 185.1.152.8
    Neighbor AS:      50538
    Local AS:         50817
    Last error:       Socket: Connection closed
  Channel ipv4
    State:          DOWN
    Table:          rib4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable