Technical notes on web development, DevOps, and AI integration.
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Months spent blaming an anti-bot; the culprit was an Indonesian ISP's DNS redirecting duckduckgo.com to Trustpositif.
TL;DR: Headless browser tests inside Docker kept failing on DuckDuckGo, and I wasted months blaming anti-bot fingerprinting. The real culprit was Indonesian ISP DNS poisoning; Kominfo's 2015 mandate redirects port 53 queries, so duckduckgo.com resolved to a wrong IP. The fix was one flag: docker run --dns 1.1.1.1 restored access instantly.