prefs:
  network.trr.mode: 0
  network.trr.ohttp.config_uri: "https://dooh.quad9.com/.well-known/doohconfig"
  network.trr.ohttp.uri: "https://dooh.quad9/dns-query"
  network.trr.ohttp.relay_uri: "https://dooh.waterfox.net/"
  network.trr.use_ohttp: true