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DNS in HTTPS

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Hi, Dear Firefox Support team. I'm currently using Firefox Nightly version 65.0a1. In the settings I selected enable DNS based on HTTPS and the address is default: https://mozilla.cloudflare-dns.com/dns-query And I can access to this cloudflare-dns website. but when I use wireshark, and browse Internet, I still find I'm doing DNS query each website, why is this happen? Doesn't the Firefox Nightly suppose to tunnel these traffic into https?

Hi, Dear Firefox Support team. I'm currently using Firefox Nightly version 65.0a1. In the settings I selected enable DNS based on HTTPS and the address is default: https://mozilla.cloudflare-dns.com/dns-query And I can access to this cloudflare-dns website. but when I use wireshark, and browse Internet, I still find I'm doing DNS query each website, why is this happen? Doesn't the Firefox Nightly suppose to tunnel these traffic into https?

Additional System Details

Installed Plug-ins

  • Shockwave Flash 31.0 r0*

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
17415 solutions 157316 answers
See also: *https://www.ghacks.net/2018/04/02/configure-dns-over-https-in-firefox/

Question owner

Tried the guide, set the dns in firefox nightly as 1.1.1.1, still get dns query in wireshark.

Tried the guide, set the dns in firefox nightly as 1.1.1.1, still get dns query in wireshark.
cor-el
  • Top 10 Contributor
  • Moderator
17415 solutions 157316 answers

Try to ask at the Stack Overflow forum site, maybe someone over there know the answer.

Try to ask at the Stack Overflow forum site, maybe someone over there know the answer. *http://stackoverflow.com/questions/
Mace2 19 solutions 330 answers

What is happening is your have network.trr.mode set to 2 which allows Doh to default back to your operating system DNS.

You should be able to set network.trr.mode=3 so it only uses the Doh setting in firefox without defaulting to any other DNS. I could not get it to work. You have to restart Firefox I believe for it to take affect.

What is happening is your have network.trr.mode set to 2 which allows Doh to default back to your operating system DNS. You should be able to set network.trr.mode=3 so it only uses the Doh setting in firefox without defaulting to any other DNS. I could not get it to work. You have to restart Firefox I believe for it to take affect.