spb-rs2/ipv4: show protocols all Nauka_Svyaz

Nauka_Svyaz BGP --- start 2019-02-12 Connect Socket: Connection closed

Description:    Nauka_Svyaz/31191/AS-NAUKANET
  BGP state:          Connect
    Neighbor address: 31.44.186.108
    Neighbor AS:      31191
    Last error:       Socket: Connection closed
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable