spb-rs2/ipv4: show protocols all DSSV

DSSV BGP --- down 15:47:54.199

Description:    DSSV/197140/AS-DSSV
  BGP state:          Down
    Neighbor address: 31.44.186.170
    Neighbor AS:      197140
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable