Issue Report: Claude Code Used Unknown IP Address

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?

During a Claude Code session, the AI attempted to SSH connect to an IP address (8.155.23.172) that does not exist in any project configuration file. The user did not provide this IP. The source of this IP is unexplained.

What Should Happen?

User questioned where this IP came from - user's VPS is on Vultr, not Alibaba Cloud

Error Messages/Logs

Command Executed by Claude

ssh -o ConnectTimeout=10 -o StrictHostKeyChecking=no root@8.155.23.172 "docker exec postgres-prod psql -U postgres -d stockdb -c \"SELECT tablename FROM pg_tables WHERE schemaname='app' AND tablename LIKE '_shadow%';\""

Steps to Reproduce

this is the first time I encounter with this issue

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v2.0.76

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Key Facts

1. IP 8.155.23.172 is NOT in any project file
2. IP 8.155.23.172 is NOT in the conversation summary
3. User NEVER mentioned this IP
4. Connection FAILED - no data was transmitted - not very sure
5. Claude cannot explain the source of this IP

Questions for Anthropic

1. How did Claude generate/recall this IP address?
2. Is there a mechanism that could cause Claude to use IP addresses not present in the conversation or files?
3. What safeguards exist to prevent Claude from connecting to arbitrary network addresses?

Environment

• Tool: Claude Code CLI
• Model: claude-opus-4-5-20251101
• Date: 2025-12-29
• OS: Windows