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DNS over HTTPS fails when network.trr.mode is 3

Discussion of bugs in Mozilla Firefox
kerft
 
Posts: 463
Joined: January 30th, 2019, 9:38 am

Post Posted September 13th, 2019, 12:33 pm

I heard that DNS over HTTPS will soon be the default for many. In version Firefox 69 I tried it, checking the box under general, networking. On https://www.cloudflare.com/ssl/encrypted-sni/ it works but warns you do not have DNSSEC, and suggests you change the default for network.trr.mode from 2 to 3 which means force DNS over HTTPS with no fallback. When I set network.trr.mode to 3, no web pages load. I increased network.trr.request-timeout but that did not work.

Is there already a bugzilla report filed?

Brummelchen
 
Posts: 4542
Joined: March 19th, 2005, 10:51 am

Post Posted September 14th, 2019, 12:54 am

which DoH server is set?
firefox 70 - trr mode on 3 means anything = dead, no connection. (default settings)
trr default is 0 here. at least i wont chose CF. there are better.

kerft
 
Posts: 463
Joined: January 30th, 2019, 9:38 am

Post Posted September 14th, 2019, 5:41 am

This is with "Cloudflare (default)" as the provider from the list in general, network settings, settings. https://blog.mozilla.org/futurereleases ... e-default/ this says in late September a small percent of US users will have DoH enabled as a test.

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