krd-rs2/ipv4: show protocols all yuglink

yuglink BGP master down 06:25:03

Description:    AS42478 Yug-Link-AS Yug-Link Ltd.
  Preference:     100
  Input filter:   yuglink_in
  Output filter:  yuglink_out
  BGP state:          Down
    Neighbor address: 91.240.225.43
    Neighbor AS:      42478