spb-rs2/ipv4: show protocols all GTNet

GTNet BGP --- start 2019-04-30 Active Socket: Connection refused

Description:    GTNet/49320/AS-INN361
  BGP state:          Active
    Neighbor address: 31.44.186.184
    Neighbor AS:      49320
    Connect delay:    0.957/5
    Last error:       Socket: Connection refused
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable