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Routing and system proxy conflict makes Codex unusable

Quick fix

Set IPv4 and IPv6 loopback addresses to DIRECT in proxy rule overrides, then retry CC Switch routing.

Symptom

Section titled “Symptom”
Error output
使用cc-s打开路由的情况下，如果本机有梯子并且打开系统代理的时候，cc-s的路由会和梯子的代理冲突，导致无法使用。关闭梯子就马上恢复正常使用。
English translation

When routing is enabled with cc-s, if a local proxy is running and system proxy is enabled, the cc-s routing conflicts with the proxy and becomes unusable. Disabling the proxy immediately restores normal operation.

Cause

Section titled “Cause”

The issue appears to be a conflict between the local proxy and CC Switch routing: disabling the proxy restores normal operation. In issue #7410, a user reported resolving the problem by enabling subscription rule overrides in the proxy and setting local loopback addresses to DIRECT. The maintainer said investigation suggested the cause was on the client or provider side and could not be fundamentally fixed by CC Switch; the issue did not confirm a single root cause. Issue #1862 also described CC Switch global or provider proxy settings seemingly having no effect while Clash for Windows was enabled, but provided no solution or enough information to confirm it was the same local loopback rule issue.

Fix

Section titled “Fix”

  1. In the proxy's subscription rule overrides, add the following two rules to send IPv4 and IPv6 local loopback addresses directly, then retry CC Switch routing. A user in issue #7410 reported that this worked.

    代理订阅规则覆写（具体配置文件路径未在 issue 中提供）
    IP-CIDR,127.0.0.0/8,DIRECT,no-resolve
    IP-CIDR6,::1/128,DIRECT,no-resolve

Affected Versions

Section titled “Affected Versions”
ToolCodex
Version3.20.3（受影响版本；issue #1862 未提供可确认的版本号）
PlatformsWindowsmacOS

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
What should I do if disabling the proxy restores normal operation?
A user in issue #7410 reported resolving the problem by setting 127.0.0.0/8 and ::1/128 to DIRECT in the proxy's subscription rule overrides.
Section titled “Related problems”
stream disconnected before completionUpdate CC Switch to 4.0 or the latest version and retry; the maintainer recommended this, but the original issue did not confirm a resolution.1 issues mergedProxy not working, constant reconnect after entering a question; CodexThe separate proxy feature in cc-switch was removed; set the proxy via $env:http_proxy in PowerShell, then run Codex.1 issues mergedToggling proxy or switching third-party accounts invalidates official Codex sign-inNo verifiable solution was provided; the issue was suggested for further reporting to cc-switch-cli.1 issues merged

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