vm-birdlg/ipv4: show protocols all rs2

rs2 BGP Trs2 up 2021-04-20 Established

Description:    session avec RR-l1
  Preference:     100
  Input filter:   ACCEPT
  Output filter:  REJECT
  Routes:         58304 imported, 0 exported, 58304 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:       18588258          0          0    1690940   16897318
    Import withdraws:      7876843          0        ---      25506    7851337
    Export updates:       16897318   16897318          0        ---          0
    Export withdraws:      7851337        ---        ---        ---          0
  BGP state:          Established
    Neighbor address: 77.95.71.5
    Neighbor AS:      43100
    Neighbor ID:      77.95.71.5
    Neighbor caps:    refresh enhanced-refresh restart-aware AS4
    Session:          external AS4
    Source address:   77.95.71.15
    Hold timer:       214/240
    Keepalive timer:  56/80