fix: unblock private DNS in macOS sandbox#17370
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Preserve private/link-local CIDRs in NO_PROXY while removing hostname suffix bypasses so internal hostnames can be resolved through the managed proxy path. Co-authored-by: Codex noreply@openai.com
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Summary
NO_PROXYvalue while preserving private/link-local CIDRsallow_local_bindingsandbox rules match the local socket shape used by DNS tools by allowing wildcard local bindsallow_local_bindingis enabled, without opening blanket outbound network accessRoot cause
Raw DNS tools do not honor
HTTP_PROXYorALL_PROXY, so the proxy-only Seatbelt policy blocked their resolver traffic before it could reach host DNS. In the affected managed config,allow_local_binding = true, but the existing rule only allowedlocalhost:*binds;dig/BIND can bind sockets in a way that needs wildcard local binding. Separately, hostname suffixes inNO_PROXYcould force internal hostnames to resolve locally instead of through the proxy path.