spb-rs1/ipv4: show protocols all mline

mline BGP --- up 2021-03-26 Established

Description:    mline/48558/AS48558
  BGP state:          Established
    Neighbor address: 185.1.152.240
    Neighbor AS:      48558
    Local AS:         50817
    Neighbor ID:      37.230.206.250
    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:   185.1.152.255
    Hold timer:       135.465/180
    Keepalive timer:  23.461/60
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         1 imported, 0 filtered, 101209 exported, 1 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:              1          0          0          0          1
      Import withdraws:            0          0        ---          0          0
      Export updates:        2237119          1          1        ---    2237117
      Export withdraws:      1008802        ---        ---        ---    1008802
    BGP Next hop:   185.1.152.255