rs2/ipv4: show protocols all pb_6_huaweiclouds_as136907_2

pb_6_huaweiclouds_as136907_2 BGP --- start 2021-02-09 Active Socket: Connection refused

Description:    Huawei Clouds 2
  BGP state:          Active
    Neighbor address: 2001:7f8:64:225:0:13:6907:2
    Neighbor AS:      136907
    Connect delay:    2.697/5
    Last error:       Socket: Connection refused
  Channel ipv6
    State:          DOWN
    Table:          t_6_huaweiclouds_as136907_2
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       restart