krd-rs1/ipv4: show protocols all megalink

megalink BGP master down 2017-08-11

Description:    AS49037 TAGAN  Megalink Ltd.
  Preference:     100
  Input filter:   megalink_in
  Output filter:  megalink_out
  BGP state:          Down
    Neighbor address: 91.240.225.31
    Neighbor AS:      49037