vm-birdlg/ipv4: show protocols all rs1

rs1 BGP Trs1 up 2021-04-20 Established

Description:    session avec RR-l1
  Preference:     100
  Input filter:   ACCEPT
  Output filter:  REJECT
  Routes:         75237 imported, 0 exported, 75237 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:        7846490          0          0     733873    7112617
    Import withdraws:      3600151          0        ---       9289    3590862
    Export updates:        7112617    7112617          0        ---          0
    Export withdraws:      3590862        ---        ---        ---          0
  BGP state:          Established
    Neighbor address: 77.95.71.9
    Neighbor AS:      43100
    Neighbor ID:      77.95.71.7
    Neighbor caps:    refresh enhanced-refresh restart-aware AS4
    Session:          external AS4
    Source address:   77.95.71.15
    Hold timer:       212/240
    Keepalive timer:  67/80