msk-rs2/ipv4: show protocols all sits

sits BGP --- up 2021-01-19 Established

Description:    sits/47379/AS-SITS
  BGP state:          Established
    Neighbor address: 185.1.160.19
    Neighbor AS:      47379
    Local AS:         49869
    Neighbor ID:      172.27.0.255
    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
    Session:          external route-server AS4
    Source address:   185.1.161.0
    Hold timer:       79.749/90
    Keepalive timer:  8.573/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         19 imported, 0 filtered, 100154 exported, 7 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:             79          0          0         38         41
      Import withdraws:           22          0        ---          0         22
      Export updates:         545426         50         10        ---     545366
      Export withdraws:       128865        ---        ---        ---     128895
    BGP Next hop:   185.1.161.0