msk-rs1/ipv4: show protocols all PrivateNetworks

PrivateNetworks BGP --- start 2020-05-29 Passive

Description:    PrivateNetworks/42946/AS42946
  BGP state:          Passive
    Neighbor address: 31.44.187.21
    Neighbor AS:      42946
    Local AS:         50817
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable