Maximilian Hils

Hm - interestingly, we see this issue in CI on Ubuntu only: https://github.com/mitmproxy/mitmproxy/actions/runs/10434096126/job/28896575466#step:7:1796 But for you it happens on Windows?

The error message you posted should continue with "Must set dns_name_servers option to run DNS mode.". 1. Does setting [`dns_name_servers`](https://docs.mitmproxy.org/stable/concepts-options/#dns_name_servers) fix the issue for you? 2. Do you have `/etc/resolv.conf`...

Thanks! The third error points at an issue with your mitmproxy install. Without getting too much into that, `mitmdump --version` should work I assume?

> > ``` > > dns nameserver 8.8.8.8 > > ``` > > This line should be `nameserver 8.8.8.8` and is the root cause behind mitmproxy not being able to...

@Stephen0910: Which OS/distro are you on? Did you do anything special to have this `dns nameserver ...` line, or is that just there for you?

Thanks! I've tried a few things, but I'm unable to get a "dns nameserver 8.8.8.8" line into my resolv.conf without editing it manually. Can you share some details on your...

1. Do you recall ever setting your DNS server to 8.8.8.8 (Google DNS)? If so, how? 2. Can you share more details on your setup? Is it Ubuntu Desktop? Is...

I can't repro this here - cloudflare-quic.com works just fine both in local and redirect mode. It works just fine for you in reverse mode, only local mode is affected?

If you want to check if a particular request is done over HTTP/2, I'd recommend to use the `is_http2` property: https://docs.mitmproxy.org/stable/api/mitmproxy/http.html#Message.is_http2 It's true that the protocol is commonly referred to...

I think this is a bug of the [ModifyHeaders](https://github.com/mitmproxy/mitmproxy/blob/main/mitmproxy/addons/modifyheaders.py) addon, not a general limitation. We probably should be using the `requestheaders` hook there, not the `request` hook (and the same...