topology

This is the relay
{
  "Producers": [
    {
      "friendly_name": "badass1",
      "addr": "0.0.0.0",
      "port": 5054,
      "valency": 1
    },
    {
      "friendly_name": "core",
      "addr": "x.x.x.4",
      "port": 5050,
      "valency": 1
    },
    {
      "friendly_name": "IOHK",
      "addr": "relays-new.mainnet-candidate.dev.cardano.org",
      "port": 3001,
      "valency": 2
    }
  ]
}

This is the core

{
  "Producers": [
    { "addr": "37.187.117.197",        "port": 5053, "valency": 1 },
    { "addr": "5.196.69.123",        "port": 5055, "valency": 1 }
  ]
}