spb-rs2/ipv4: show protocols all yandex

yandex BGP --- up 2021-03-24 Established

Description:    yandex/13238/AS-YANDEX/via Yandex
  BGP state:          Established
    Neighbor address: 185.1.152.57
    Neighbor AS:      13238
    Local AS:         50817
    Neighbor ID:      87.250.233.131
    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:       73.393/90
    Keepalive timer:  23.564/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         31 imported, 0 filtered, 13534 exported, 31 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             31          0          0          0         31
      Import withdraws:            0          0        ---          0          0
      Export updates:        2082333         31    1466963        ---     615339
      Export withdraws:       908462        ---        ---        ---      82445
    BGP Next hop:   185.1.153.0