rix-rs2/ipv4: show protocols all viter

viter BGP --- start 15:06:16.509 Passive Error: BFD session down

Description:    viter/58096/AS58096
  BGP state:          Passive
    Neighbor address: 193.27.39.143
    Neighbor AS:      58096
    Local AS:         49634
    Last error:       Error: BFD session down
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable