spb-rs2/ipv4: show protocols all PulNet

PulNet BGP --- start 2019-08-28 Connect Socket: No route to host

Description:    PulNet/34232/AS34232
  BGP state:          Connect
    Neighbor address: 31.44.186.46
    Neighbor AS:      34232
    Last error:       Socket: No route to host
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable