only_known_rpc

raw details (from release v2.2.3):

{
  "name": "only_known_rpc",
  "properties": {
    "alias": "no-untrusted-rpc",
    "long": "only-known-rpc",
    "takes_value": "false",
    "requires": "known_validators",
    "help": "Use the RPC service of known validators only"
  },
  "isDeprecated": false
}