spb-rs1/ipv4: show protocols all linkey

linkey BGP --- up 2021-03-24 Established

Description:    linkey/13002/AS-LINKEY
  BGP state:          Established
    Neighbor address: 185.1.152.141
    Neighbor AS:      13002
    Local AS:         50817
    Neighbor ID:      213.159.127.10
    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
        Restart time: 120
        AF supported: ipv4
        AF preserved: ipv4
      4-octet AS numbers
      Long-lived graceful restart
    Session:          external route-server AS4
    Source address:   185.1.152.255
    Hold timer:       60.268/90
    Keepalive timer:  0.165/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         14 imported, 0 filtered, 101160 exported, 14 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            306          0          0        280         26
      Import withdraws:            8          0        ---          0          8
      Export updates:        2456629         26          0        ---    2456603
      Export withdraws:      1055385        ---        ---        ---    1055377
    BGP Next hop:   185.1.152.255