gistfile1.txt

"route_table_dump": {
 "name": "ingress_http",
 "virtual_hosts": [
  {
   "name": "kuard.demo",
   "domains": [
    "kuard.demo"
   ],
   "routes": [
    {
     "match": {
      "prefix": "/"
     },
     "route": {
      "weighted_clusters": {
       "clusters": [
        {
         "name": "default/kuard/8080",
         "weight": 90,
         "request_headers_to_add": [
          {
           "header": {
            "key": "Host",
            "value": "kuard.cluster1.backend"
           }
          }
         ]
        },
        {
         "name": "default/kuard2/8080",
         "weight": 10,
         "request_headers_to_add": [
          {
           "header": {
            "key": "Host",
            "value": "kuard2.cluster2.backend"
           }
          }
         ]
        }
       ]
      }
     }
    }
   ]
  }
 ]
}