{
 "h1": {
  "binary_path": "./vhost"
 },
 "h2": {
  "binary_path": "./vhost"
 },
 "h3": {
  "binary_path": "./vhost"
 },
 "r1": {
  "binary_path": "./vrouter"
 },
 "r2": {
  "binary_path": "./vrouter"
 }
}