tll-rs2/ipv4: show protocols all flex

flex BGP --- up 2021-12-02 Established

Description:    flex/21453/AS-FLEX
  BGP state:          Established
    Neighbor address: 37.9.49.126
    Neighbor AS:      21453
    Local AS:         57936
    Neighbor ID:      80.252.128.1
    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:
      4-octet AS numbers
    Session:          external route-server AS4
    Source address:   37.9.49.254
    Hold timer:       117.491/180
    Keepalive timer:  12.463/60
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         81 imported, 2 filtered, 97383 exported, 73 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            103          0          2          0        101
      Import withdraws:           20          0        ---          2         20
      Export updates:         177708         99        121        ---     177488
      Export withdraws:        63363        ---        ---        ---      63342
    BGP Next hop:   37.9.49.254