spb-rs2/ipv4: show protocols all vk

vk BGP --- up 2021-01-13 Established

Description:    vk/47541/AS-VKONTAKTE/via VK
  BGP state:          Established
    Neighbor address: 185.1.152.5
    Neighbor AS:      47541
    Local AS:         50817
    Neighbor ID:      87.240.191.251
    Local capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Enhanced refresh
      Long-lived graceful restart
    Neighbor capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Long-lived graceful restart
    Session:          external route-server AS4
    Source address:   185.1.153.0
    Hold timer:       86.583/90
    Keepalive timer:  0.471/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         0 imported, 0 filtered, 13135 exported, 0 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:              0          0          0          0          0
      Import withdraws:            0          0        ---          0          0
      Export updates:         972675          0     919326        ---      53349
      Export withdraws:       774248        ---        ---        ---     102195
    BGP Next hop:   185.1.153.0