gw.mythic-sov: show protocols all ext_upstream_he

ext_upstream_he BGP --- down 2019-12-11

BGP state:          Down
    Neighbor address: 2001:470:11:58::1
    Neighbor AS:      6939
  Channel ipv6
    State:          DOWN
    Table:          master6
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Export limit:   2
      Action:       disable