[BUG] Claude Code 2.1.15 wont start: error: Invalid DNS result order.
Resolved 💬 4 comments Opened Jan 22, 2026 by hucky8 Closed Jan 22, 2026
Preflight Checklist
- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code
What's Wrong?
I upgraded on my M1 Mac with brew upgrade claude-code as usually, but claude code does not start anymore. Claude /doctor does not work
What Should Happen?
Claude should start and it should start to prompt
Error Messages/Logs
Freakbook4:mvp user$ claude
warn: CPU lacks AVX support, strange crashes may occur. Reinstall Bun or use *-baseline build:
https://github.com/oven-sh/bun/releases/download/bun-v1.3.6/bun-darwin-x64-baseline.zip
error: Invalid DNS result order.
Steps to Reproduce
Install / update Claude code on mac via Homebrew: brew upgrade claude-code
node version: v25.4.0
Claude Model
None
Is this a regression?
Yes, this worked in a previous version
Last Working Version
2.1.12
Claude Code Version
2.1.15
Platform
Anthropic API
Operating System
macOS
Terminal/Shell
Terminal.app (macOS)
Additional Information
_No response_
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