DNS over HTTPS (DoH) not working in Firefox - India

Issue

I’m using DNS over HTTPS in Firefox 89. Unfortunately it appears that Cloudflare ESNI Checker | Cloudflare shows that DoH is not being used despite me enabling it in the settings and setting network.trr.mode to 3.

For instance if I do the same test on Chrome it shows that DoH is working, but not on Firefox for some reason.

image

Debug Data

Trace:

fl=202f75
h=www.cloudflare.com
ip=117.217.207.158
ts=1623056856.405
visit_scheme=https
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0
colo=BOM
http=http/3
loc=IN
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off

1.1.1.1 Data

https://1.1.1.1/help#eyJpc0NmIjoiTm8iLCJpc0RvdCI6Ik5vIiwiaXNEb2giOiJObyIsInJlc29sdmVySXAtMS4xLjEuMSI6IlllcyIsInJlc29sdmVySXAtMS4wLjAuMSI6IlllcyIsInJlc29sdmVySXAtMjYwNjo0NzAwOjQ3MDA6OjExMTEiOiJObyIsInJlc29sdmVySXAtMjYwNjo0NzAwOjQ3MDA6OjEwMDEiOiJObyIsImRhdGFjZW50ZXJMb2NhdGlvbiI6IkJPTSIsImlzV2FycCI6Ik5vIiwiaXNwTmFtZSI6IkNsb3VkZmxhcmUiLCJpc3BBc24iOiIxMzMzNSJ9

Hello Deagontaven

The test result is inconclusive, so it could be working ok. You could try using this test:

https://1.1.1.1/help

Edit: Sorry, I just saw you provided the results. Interesting that it shows the AS for Cloudflare…

I think it would also help for you to send us a screenshot of your Connection Settings configuration (about:preferences) in Firefox so that we can check if there is something wrong with it.

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Per Encrypted Client Hello: the future of ESNI in Firefox - Mozilla Security Blog :

Firefox 85 replaces ESNI with ECH draft-08, and another update to draft-09 (which is targeted for wider interoperability testing and deployment) is forthcoming.

So the ESNI test is not going to work as Firefox 85 and newer support ECH now.

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