rs2/ipv4: show protocols all rapidlink

rapidlink BGP master start 2021-04-12 Connect BGP Error: Hold timer expired

Description:    RapidLink SRL
  Preference:     100
  Input filter:   (unnamed)
  Output filter:  (unnamed)
  Import limit:   1000
    Action:       restart
  Routes:         0 imported, 0 exported, 0 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:              0          0          0          0          0
    Import withdraws:            0          0        ---          0          0
    Export updates:              0          0          0        ---          0
    Export withdraws:            0        ---        ---        ---          0
  BGP state:          Connect
    Neighbor address: 185.1.45.11
    Neighbor AS:      50084
    Last error:       BGP Error: Hold timer expired