apple/container

[Request]: system property for default `--dns`.

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#1,449 创建于 2026年4月25日

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good first issuenetworknextux

描述

Feature or enhancement request details

NOTE: Depends on #1425; there's no point tackling this until the TOML configuration is in place.

We've a number of issues relating to DNS resolution from containers not working properly when a third party DNS server conflicts with the server that macOS mDNSResponder wants to start.

Until an OS-level solution can be provided, it would be useful to have a system property (and potentially environment variables if session level overrides seem sensible) that allows the user to configure default values for --dns.

We can also consider properties for the other DNS CLI options here as well.

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贡献者指南

技术栈
swift
领域
infrastructuredevops
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
blocked
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Issue #1425macOS DNS backgroundContainer tool configuration
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
First, review the implementation of issue #1425 which adds TOML configuration. Then examine the existing codebase for how system properties are handled (likely in a configuration manager class). The goal is to add a system property analogous to dns CLI option. Consider also adding properties for other DNS options as noted. No linked PRs or comments to reference.