fix: use 127.0.0.1 to prevent intermittent ipv6 connection refused #4016
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NGPixel
approved these changes
Dec 24, 2025
jennifer-richards
approved these changes
Jan 5, 2026
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Using the nginx setting "proxy_pass http://localhost:8000" results in nginx attempting to connect to gunicorn app server over ipv6 and timing out, spamming log with errors:
connect() failed (111: Connection refused) while connecting to upstream, client: 10.244.11.165, server: _, request: "GET /favicon.ico HTTP/1.1", upstream: "http://[::1]:8000/favicon.ico", host: "mailarchive.ietf.org", referrer: "https://mailarchive.ietf.org/arch/export/url/?...
Change to http://127.0.0.1:8000 to specify ipv4.