gb-bgp/ipv6: show protocols all AS6939_SIT

AS6939_SIT BGP master up 2019-10-18 Established

Description:    London to AS6939
  Preference:     100
  Input filter:   (unnamed)
  Output filter:  (unnamed)
  Routes:         75055 imported, 4 exported, 61033 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:        3765684          0         25     152818    3612841
    Import withdraws:       824358          0        ---        383     824000
    Export updates:       68767048    2986269   65780775        ---          4
    Export withdraws:       503610        ---        ---        ---          0
  BGP state:          Established
    Neighbor address: 2001:470:11:55::1
    Neighbor AS:      6939
    Neighbor ID:      216.66.84.50
    Neighbor caps:    refresh AS4
    Session:          external AS4
    Source address:   2001:470:11:55::2
    Hold timer:       157/180
    Keepalive timer:  29/60