Description

I noticed that nginx reports random Connection refuseds. Took a while to figure out:

My server is bound to ipv6 ([::1]), and the nginx config uses localhost for proxy_pass, which by default resolves to ::1, but sometimes (this may be related to server not responding fast enough up to about anything, I haven't debugged that part) it resolved to 127.0.0.1, which failed to connect.

I have defined $local_host set to '[::1]`, replaced all "localhost" refreences and the problems went away. You may or may not want to do the same.

Steps to reproduce

1. bind server to ::1 only
2. let localhost resolve preferece to ipv6
3. occasionally you may see connection fail to 127.0.0.1

Relevant logs

Expected behavior

No connection refused is nice. 😁

(sidenote, 2026.5 is not selectable version in this bug template!)

Which operating system are you using?

Linux/BSD/UNIX

What browsers are you seeing the problem on?

Mozilla Firefox

Extensions

NA

Version

Other